Screening of Winter Rape Varieties Suitable for Northern Guangxi

[Objective] The study was conducted to provide a reference for develop- ment of fine winter rape varieties in northern Guangxi. [Method] In 2012 and 2013, 11 winter rape varieties were evaluated in northern Guangxi using randomized com- plete block design, Data such as yield and diseases were collected and analyzed. [Result] Among all the 11 varieties tested, the highest yield was recorded in variety Chuanzao NHl105. Dadi 95, FDl102, Chuanzao NHl105 and SWUl112 exhibited disease resistance better than Qinghai 131. [Conclusion] The winter rape varieties of FD105 and Qianza J102 were found suitable for planting in northern Guangxi.

Viability of Stigmas of Pistils in Winter Rape： Peculiarity of Samples with Different Origins

The researches have been carried out in 2011-2012, in the experimental fields of Yuryev Plant Production Institute Kharkiv, Ukraine. The forms of ＂00＂ type （a low content of erucic acid and glucosinolates） and self-pollinated lines--110M-10, 127M-10, 132M-10 were studied; the forms of＂0＋＂ type--selfed lines 124-10, 221-10, 305-10; the forms of＂＋0＂ type--cultivars Victor, Janus, Emerald; forms of ＂＋＋＂ type--cultivars Fyedorovskiy, Marens, Uspikh, as well as, self-incompatible forms 5C, 15C-10, 32C-10 and the original sterile form of mutant origin were used. Viability in stigmas of the pistil lasted 3-7 days, in the forms of ＂＋0＂, ＂＋＋＂ type, 7-15 days in the cultivars and forms of ＂0＋＂, ＂00＂ type, 14-21 days in the self-incompatible and sterile forms. A fast loss of sensitivity to pollen by pistil＇s stigma was observed in the forms of＂＋0＂ and ＂＋＋＂ types. On the contrary, in self-incompatible and sterile forms was observed a gradual increase of sensitivity of pistil＇s stigma to pollination and then its gradual fall. A maximum of sensitivity of a pistil＇s stigma to pollen in ＂00＂ and ＂0＋＂ forms was on the 3rd-6th day after castration.

Fusing multi-source data to map spatio-temporal dynamics of winter rape on the Jianghan Plain and Dongting Lake Plain, China

Mapping crop distribution with remote sensing data is of great importance for agricultural production, food security and agricultural sustainability. Winter rape is an important oil crop, which plays an important role in the cooking oil market of China. The Jianghan Plain and Dongting Lake Plain (JPDLP) are major agricultural production areas in China. Essential changes in winter rape distribution have taken place in this area during the 21st century. However, the pattern of these changes remains unknown. In this study, the spatial and temporal dynamics of winter rape from 2000 to 2017 on the JPDLP were analyzed. An artificial neural network (ANN)-based classification method was proposed to map fractional winter rape distribution by fusing moderate resolution imaging spectrometer (MODIS) data and high-resolution imagery. The results are as follows:(1) The total winter rape acreages on the JPDLP dropped significantly, especially on the Jianghan Plain with a decline of about 45% during 2000 and 2017.(2) The winter rape abundance keeps changing with about 20–30% croplands changing their abundance drastically in every two consecutive observation years.(3) The winter rape has obvious regional differentiation for the trend of its change at the county level, and the decreasing trend was observed more strongly in the traditionally dominant agricultural counties.

Dynamics of Essential Metal Elements Contents in Winter Oilseed Rape during Cold Acclimation

[Objective]The paper was to investigate the dynamics of essential metal elements（Ca,Mg,Fe,Mn,Zn and Cu）contents in winter oilseed rape（Brassica napus L.）during cold acclimation,and to reveal the effects and mechanisms of essential elements in cold resistance of oilseed rape.[Method]Three varieties with different cold resistance including Zhongshuang No.11（ZS,freezing sensitive variety）,Ganyouza No.1（GY）and Jinyuyou No.1（JYY,freezing tolerant varieties）were used in the study,and the changes of necessary metal elements in these oilseed rapes during cold acclimation were studied.[Result]The concentration of metal elements in oilseed rape had significant changes during cold acclimation,and the difference between varieties was significant.In plant roots,the concentrations of Ca,Mg,Fe,Mn,Zn and Cu were significantly increased,this might because that low temperature made the transpiration decreased,thus blocking the upward transport of elements.In plant shoots,the concentrations of Ca,Mg and Zn were significantly decreased,while the concentrations of Fe and Mn were significantly increased;the change extent of various elements in ZS variety was the largest.[Conclusion]Maintaining the stability of Ca,Mg and Zn concentrations and increasing Fe,Mn and Cu concentrations in plant shoots might be benefit for increasing the cold tolerance of winter oilseed rape.

Effects of Nitrogen Fertilization on the Growth and N Uptake of Late-sowing Winter Oilseed Rape (Brassica napus L.)

[Objective] The aim of this work was to analyze the N fertilization on the vegetative growth and N uptake of different winter rapeseed varieties at wintering stage. [Method] In two consecutive years （2009-2011）, two winter rapeseed varieties （B. napus L.）, an early maturity variety Zhongyou 116 （ZY116） and a middle-late application maturity variety Zhongyouza 12 （ZYZ12） were employed. Field experiments with different N levels （0, 90, 180, 270, 360 kg N/hm 2 ） were designed. At the wintering stage, the dry matter weight, the nitrogen content and concentration of plants, leaf nitrate reductase activity （NRA） and seed yields were investigated. [Result] The shoot dry matter of ZY116 increased rapidly when N rate ranged from 0 to 180 kg/hm 2 , and it raised slightly when N rate ranged from 180 to 360 kg/hm 2 . The shoot dry matter of ZYZ12 were changed in a single peak curve; the peak of shoot dry matter appeared at 270 kg N/hm 2 . The N concentration and N content in shoot and root increased rapidly when the N rate changed from 90 to 180 kg/hm 2 . Moreover, the N concentration and N content root of in ZYZ12 were much higher than that of ZY116. Present study revealed that the changed trend of leaf nitrate reductase activities （NRA） were significantly increased at the N rate of 180 kg/hm 2 in ZY116 and ZYZ12 compared with the N rate of 90 kg/hm 2 in two years. [Conclusion] Optimal nitrogen application significantly increased the dry weights and N uptake at wintering stage as well as increasing the yield of winter oilseed rape.

National Protection Zone for Rapeseed Production and Industrial Cluster of Rape in Hubei Province

Hubei Province is the main winter rapeseed producing area in China,and has the national advantage and characteristic industrial cluster of rape.The protection zone for the production of important agricultural products of rapeseed in Hubei Province also ranks first as that in Hunan Province.This paper studied the winter rape industry,the important agricultural product production protection zone of rapeseed,the provincial double-low high-quality rape protection zone and the industrial cluster of rape in Jianghan Plain in Hubei Province,and analyzed the main problems existing in the development of rapeseed production protection zone and industrial cluster of rape.Finally,it came up with strategies including promoting national rape varieties,overcoming the problem of rape"agricultural chip",promoting the"rice+rape"rotation model,and strengthening the protection of intellectual property rights of brand marks.

Analysis on Agrometeorological Conditions of Production of Winter Wheat and Rape Crops in Western Guizhou in 2019

Whole growth period of winter wheat and rape crops in western Guizhou in 2019 was from October of 2019 to early May of 2020.Using daily temperature,rainfall and sunshine hours of three national meteorological observatories(Shuicheng,Panzhou and Liuzhi)of western Guizhou,the impact of meteorological conditions on growth and development of winter wheat and rape crops was analyzed.The results showed that average temperature in whole growth period of winter wheat and rape crops in western Guizhou in 2019 was between 11.1 and 13.0℃,which was 0.4-1.6℃higher than that in the same period of common year.Rainfall was between 276.0 and 309.0 mm.When compared with that in the same period of common year,rainfall was 7%-22%less in other regions except in Panzhou(1%more).Sunshine hours was between 689.2 and 1091.2 h.When compared with that in the same period of common year,sunshine hours was 14%-26%more in other regions except in Shuicheng(equal).In growth period of winter wheat and rape crops,there was good heat condition and sufficient sunshine,and rainfall was normal and slightly less,but it was mostly sunny and rainy alternating,which was favorable for the growth of crop root.During growth period of crops,there was lighter meteorological disaster.It was clear that meteorological conditions were conducive to the growth and development of winter wheat and rape crops in 2019.

Mechanical Harvesting Effects on Seed Yield Loss,Quality Traits and Profitability of Winter Oilseed Rape (Brassica napus L.)

China is one of the most important rapeseed producing countries in the world. Effective mechanical harvesting time for decreasing harvesting loss of winter oilseed rape has been becoming a critical factor. An elite cultivar Zhongshuang 11 （Brassica napus L.） was employed in two rounds of field experiments from 2009 to 2011. Seeds were sown with machine, three combine harvesting times namely combine harvesting A, B, and C （CHA, CHB, and CHC） were designed and manual harvesting （MH） as control was performed at maturity. The harvesting treatments were determined according to color of pod and seed in the field. Seed yield loss and quality in different treatments were evaluated. Results showed that both seed yields and harvesting losses in 2009-2010 were higher than that in 2010-2011, whereas seed oil contents in 2010-2011 were higher than that in 2009-2010. The highest yield appeared in CHB, which was significantly higher than that in MH. Furthermore, harvesting loss in CHB were 50% that in MH. Seed oil content and chlorophyll exhibited no obvious difference between CHB and MH. Economic profit analysis demonstrated that mechanical sowing/combine harvesting （MS/CH） showed an input/output ratio of 1：1.6, and it was 1：1.2 in mechanical sowing/manual harvesting （MS/MH）. Labor-cost accounted for more than 70% of the total cost in MS/MH, which led to low profitability to a great extent. Our results suggested that CHB was the optimum harvesting time for winter oilseed rape along the Yangtze River.

Utilizing comprehensive decision analysis methods to determine an optimal planting pattern and nitrogen application for winter oilseed rape

Oilseed rape is one of the most important oil crops globally.Attaining the appropriate cultivation method(planting pattern and nitrogen level)is necessary to achieve high yield,quality and resource utilization efficiency.However,the optimal method for oilseed rape varies across countries and regions.The objective of the present study was to determine an appropriate cultivation method,including planting pattern and nitrogen application,for winter oilseed rape in northwestern China.Two planting patterns:ridge film mulching and furrow planting(RFMF)and flat planting(FP),and six nitrogen(N)amounts:0(N0),60(N60),120(N120),180(N180),240(N240),and 300(N300)kg N ha–1 were applied across three growing seasons(2014–2017).Three comprehensive decision analysis methods:principal component analysis,grey correlation degree analysis and the combined entropy weight and dynamic technique for order preference by similarity to ideal solution method were used to evaluate the growth and physiological indicators,nutrient uptake,yield,quality,evapotranspiration,and water use efficiency of winter oilseed rape.Planting pattern,nitrogen amount and their interaction significantly affected the indicators aforementioned.The RFMF pattern significantly increased all indicators over the FP pattern.Application of N also markedly increased all the indicators except for seed oil content,but the yield,oil production and water use efficiency were decreased when N fertilizer exceeded 180 kg N ha–1 under FP and 240 kg N ha–1 under RFFM.The evaluation results of the three comprehensive decision analysis methods indicated that RFMF planting pattern with 240 kg N ha–1 is an appropriate cultivation method for winter oilseed rape in northwestern China.These findings are of vital significance to maximize yield,optimize quality and improve resource use efficiencies of winter oilseed rape.

Ridge-furrow rainwater harvesting with supplemental irrigation to improve seed yield and water use efficiency of winter oilseed rape(Brassica napus L.)

Ridge-furrow rainwater harvesting （RFRH） planting pattern can lessen the effect of water deficits throughout all crop growth stages, but water shortage would remain unavoidable during some stages of crop growth in arid and semiarid areas. Supplemental irrigation would still be needed to achieve a higher production. Field experiments were conducted for two growing seasons （2012-2013 and 2013-2014）to determine an appropriate amount of supplemental irrigation to be applied to winter oilseed rape at the stem-elongation stage with RFRH planting pattern. Four treatments, including supplemental irrigation amount of 0 （I1）, 60 mm （I2） and 120 mm （I3） with RFRH planting pattern and a control （CK） irrigated with 120 mm with flat planting pattern, were set up to evaluate the effects of supplemental irrigation on aboveground dry matter （ADM）, nitrogen nutrition index （NNI）, radiation use efficiency （RUE）, water use efficiency （WUE）, and seed yield and oil content of the oilseed rape. Results showed that supplemental irrigation improved NNI, RUE, seed yield and oil content, and WUE. However, the NNI, RUE, seed yield and oil content, and WUE did not increase significantly or even showed a downward trend with excessive irrigation. Seed yield was the highest in 13 for both growing seasons. Seed yield and WUE in 13 averaged 3235 kg ha^-1 and 8.85 kg ha^-1 mm-1, respectively. The highest WUE was occurred in 12 for both growing seasons. Seed yield and WUE in 12 averaged 3089 kg ha^-1 and 9.63 kg ha^-1 mm^-1, respectively. Compared to 13, 12 used 60 mm less irrigation amount, had an 8.9% higher WUE, but only 4.5 and 0.4% lower seed yield and oil content, respectively. 12 saved water without substantially sacrificing yield or oil content, so it is recommended as an appropriate cultivation and irrigation schedule for winter oilseed rape at the stem-elongation stage.

Responses of Seed Yield and Economic Benefit of Winter Oilseed Rape(Brassica napus L.) to Different NPK Ratio and Dose

Field experiments were conducted during 2008-2010 to investigate the ef- fects of NPK fertilization on seed yield and economic benefit of a new hybrid cultivar of winter oilseed rape （Brassica napus L.） - Xiangzayou763, and to determine the optimum NPK ratio and dose in Hunan, China. The results showed that NPK ratio （1：0.50：0.50） with 180 kg/hm2 N, 90 kg/hm2 P2O5 and 90 kg/hm2 K20 was the optimum combination for the highest seed yield （2 231.13 kg/hm2） and economic benefit （9 816.97 Yuan/hm2）, of which 1 641.23 Yuan/hm2 being set for fertilizer in- vestment （VCR=4.11）. Besides, the effects of N, P and K fertilizers on seed yield and oil production of winter oilseed rape were not identical. N had the greatest ef- fect on plant growth of winter oilseed rape, followed by P and K. Total leaf number, green leaf number, leaf length and width, rhizome diameter, branch number, dry weight per plant and other agronomic characters in high N treatments were higher than those in low N treatments. By correlation and path analysis of yield components, the contribution rate to seed yield was found： effective silique number per plant〉seed number per silique〉l 000-seed weight.

不同施氮水平对冬油菜根际微生物群落特征的影响

【目的】探究冬油菜根际微生物群落特征对不同施肥的响应,确定油菜氮肥适宜用量,为土壤培肥和调控土壤生态功能提供理论依据【方法】田间试验在油菜种植区(武穴)开展,在秸秆还田条件下设置5个处理:不施氮肥(SN0)、N 120 kg/hm^(2)(SN120)、N 180 kg/hm^(2)(SN180)、N 240 kg/hm^(2)(SN240)和N 300 kg/hm^(2)(SN300),采用16S rRNA和ITS高通量测序方法,分析根际土壤细菌和真菌群落结构及其功能变化,同时测定土壤理化性质和作物产量。【结果】1)与不施氮处理(SN0)相比,施氮处理降低了根际土壤有效磷含量(24.63%~35.10%)和速效钾含量(39.67%~59.77%),提高了全氮(6.18%~14.60%)和碱解氮含量(7.18%~34.99%)。SN180处理提升土壤全氮和碱解氮含量的幅度最小,SN300处理提升幅度最大。随着氮肥的增加,有机碳含量呈增长趋势,pH呈下降趋势,油菜产量先增加后减少,SN180产量最高。2)随着施氮量的递增,细菌的Chao1指数呈递增趋势;与SN0处理相比,SN180处理提高了真菌Shannon指数7.20%。施氮肥改变了细菌和真菌群落结构。与SN0处理相比,SN180处理提高了子囊菌门、担子菌门和拟杆菌门相对丰度,降低了被孢霉门和酸杆菌门相对丰度,减缓了鞘氨醇单胞菌和芽孢杆菌属的减少趋势,富集了红假单胞菌属(Rhodopseudomonas)和线黑粉酵母属(Filobasidium)。与SN0处理相比,施氮处理均降低了化学异养、固氮、芳香化合物降解和几丁质分解功能菌群的丰度,同时降低undefined saprotroph丰度。3)环境因子与群落关联网络分析和RDA分析显示,土壤有机碳(SOC)、碱解氮(AN)、全氮(TN)和有效磷(AP)含量是影响真菌群落的主要环境因子,SOC和AP含量是细菌群落的主要影响因子。无色穗孢属(Achroiostachys)与SOC含量呈负相关,与AN呈正相关。Emericellopsis与AN和TN含量呈显著负相关,与pH呈显著正相关。SOC与类诺卡氏属(Nocardioides)显著正相关,与厌氧粘细菌属(Anaeromyxobacter)显著负相关。【结论】从产量、群落多样性及富集有益微生物角度综合分析,冬油菜施用N 180 kg/hm^(2)是较合理的氮肥用量。

我国冬油菜的气候灾损变化及其对ENSO响应

构建冬油菜气候灾损与ENSO事件的可能关系有利于应对气候变化对油料供给的影响。基于12个主产省市1980—2019年的冬油菜单产序列,通过H-P滤波与时序全局主成分分析识别了气候灾损的年代差异。此外,梳理了主要气象灾害以及不同ENSO年型对灾损的影响,进而探讨了9种ENSO指数的预判作用。主要结果如下:①冬油菜种植效率的区域均衡性呈现出显著的上升趋势;②多数省市的气候灾损在1980s和1990s有着更高强度;③冻灾和雹灾对冬油菜种植有着更不利的影响;④ENSO强冷事件支配年份的气候灾损明显更高;⑤极端东部热带太平洋海表温度等因子驱动的分类模型对灾损年景有着较好的预判效果。

休闲期复种绿肥冬油菜对陇中旱地春小麦氮磷利用率和产量的影响

氮、磷肥对春小麦的产量形成具有重要作用,为提高春小麦氮磷的吸收和利用,通过田间试验,研究了休闲期种植翻压绿肥冬油菜对小麦产量及籽粒、秸秆氮磷吸收利用效率的影响。结果表明,休闲期种植翻压绿肥冬油菜后春小麦生物量和籽粒产量提高了23.03%和17.68%;籽粒、秸秆中氮含量分别降低了5.44%、27.39%,秸秆氮吸收量降低了8.69%,籽粒氮吸收量提高了11.29%;籽粒中磷含量提高了11.35%,秸秆中磷含量降低了10.00%,籽粒、秸秆中磷吸收量分别提高了30.84%、12.50%。氮肥偏生产力和氮素利用效率分别提高了17.65%、12.18%,磷肥偏生产力提高了17.65%,磷素利用效率降低了5.34%。综上,休闲期麦后复种绿肥冬油菜可提高小麦籽粒的磷含量、氮磷吸收量、氮磷肥偏生产力以及氮素利用效率,进而有效提高小麦产量。

长江中游南部油菜产区低产原因及育种对策

为明确长江中游南部地区影响油菜产量的关键气象因子,提高油菜育种效率,本文以长江中游2018-2020三年试验点的气象数据及参加国家冬油菜品种试验的106个油菜品种为基础数据进行分析。结果表明:相同油菜品种栽培条件下,南部地区的单产为2307.15 kg/hm^(2),比北部偏低25.28%,其中千粒重、每角粒数、有效分枝数和菌核病病情指数差异最大,分别降低16.09%、4.43%、9.19%和27.84%。通径分析表明南部地区油菜品种产量构成与北部显著不同,南部地区对小区产量直接作用大小依次为有效分枝数(0.2538)>千粒重(0.2887)>每角粒数(0.1469)>菌核病病情指数(-0.3981),北部地区对小区产量直接作用大小依次为全生育期(0.5798)>单株有效角果数(0.2128)>每角粒数(0.1624)>千粒重(-0.1630)。气象因子与产量回归分析表明,南部地区油菜产量与11月平均温度显著负相关,1月和3月昼夜温差显著正相关,11月和12月最低温显著负相关,2月和4月最低温极显著正相关,2月和4月降雨量显著负相关。从整个生育期看,长江中游南部地区主要影响油菜产量气象因子为昼夜温差、最低温度和降雨量。育种策略中,南部地区除了选育耐高温性和耐渍涝的油菜品种外,还应加强对千粒重、有效分枝数、每角粒数的选择,为进一步提高南部地区油菜单产提供理论依据。

农户分化对开发利用冬闲田种植油菜意愿的影响机制

基于长江流域冬油菜种植农户为研究样本,开展了农户分化对开发利用冬闲田种植油菜意愿的影响机制及效应分析。研究结果表明:其一,农户分化对开发利用冬闲田种植油菜意愿有负面影响。分化程度越高,越不利于农户开发利用冬闲田种植油菜。同时,个人特征、家庭特征和生产因素显著影响农户开发利用冬闲田种植油菜意愿。其二,机制分析表明,农户分化通过农业生产性服务提升开发利用冬闲田种植油菜意愿。其三,异质性分析表明,农户分化影响开发利用冬闲田种植油菜意愿在长江流域9省(市)间存在差异,其中:云南省影响较高,湖北省影响较低。基于此,建议从区分不同省(市)继续推进开发利用冬闲田种植油菜有序开展、加强农业生产性服务体系建设、合理引导农村剩余劳动力外流等方面推动农户开发利用冬闲田种植油菜。

2024年夏收粮油作物生育期气象条件及其影响评估

基于2024年夏收粮油作物主产区约1800个气象站逐日气象观测资料和295个农业气象站的农业气象观测资料,分析冬小麦和油菜生长季气候适宜度和灾害指数,评价气象条件对夏收粮油作物的利弊影响。结果表明:2023/2024年度冬小麦、油菜生育期内,产区大部光热充足,降水偏多,大部时段农田墒情适宜,晚霜冻、湿渍害和干旱等农业气象灾害影响偏轻。作物成熟收获阶段天气晴好,利于机械化麦收作业,进度较常年(1991-2020年)和2023年偏快,收获质量高。长江中下游地区2023/2024年度冬季多轮雨雪冻害、2024年春季阶段性阴雨及强对流天气等,不利于湘鄂等地油菜单产提高。总体上,冬小麦生长季内气象条件总体好于2022/2023年度,油菜生长季内气象条件接近2023年。

绿肥油菜栽培技术

种植绿肥油菜,不仅可以稳定并扩大绿肥种植面积,提高冬闲田的利用率,也有利于改良土壤、减少病虫害、提升后茬作物产量和品质。本文从绿肥油菜的种植优势、栽培要点及推广应用成效方面总结了绿肥油菜栽培技术,经过两年实践,初步形成了适应当地气候条件的“适宜品种+配套技术+冬闲茬口”土壤有机质提升方案,并进行大面积推广。研究成果为绿肥油菜种植提供参考。

Effects of harvesting method and date on yield loss and seed quality of rapeseed

China is one of the major rapeseed production countries in the world,but harvesting mechanization was still backward,and high harvest loss was a key inhibiting factor for rapeseed production.To obtain optimum harvesting date for winter rape in the Yangtze River Valley of China,artificial simulated combine harvesting and artificial two-stage harvesting were adopted to find correlations between harvesting date,rape variety,seed oil content,protein content,grain moisture rate,rapeseed straw moisture content,rapeseed unthreshing rate,grain drop loss rate,thousand seeds weight(TSW),and harvesting economic coefficient(HEC).Analysis of variance showed that rapeseed oil content,protein content and TSW were correlated with rape variety;HEC was correlated with harvesting method and rape variety.Rape variety was the dominant factor of rapeseed oil content,protein content,TSW and HEC.Grain moisture rate,un-threshing rate,grain drop loss rate and straw moisture content were correlated with harvesting method and date.Harvesting date was the dominant factor of rapeseed moisture rate,un-threshing rate,grain drop loss rate and straw moisture rate.Single factor tests further proved that harvesting date had less impact on rapeseed oil content,protein content,TSW and HEC.It showed little correlation with rapeseed quality except grain moisture rate.The optimum harvesting date could be known by change in straw moisture content.The combined harvesting should be carried out during the grain moisture content of 15%-20%with TSW stabilized in the highest level.The twostage harvesting cutting should be carried out at the grain moisture content of 35%-40%.This research offered a reference to harvesting method and date for rape cultivated in the Yangtze River Valley.

北方旱寒区甘蓝型冬油菜产量、品质及抗倒性的分析评价

2018—2019年,以34个强抗寒甘蓝型冬油菜品系为试验材料,对其产量、品质及抗倒性进行分析和评价,挖掘优异种质资源。结果表明:不同材料间的产量、品质及抗倒性存在较大差异,单株产量变异范围为6.50~36.67 g,平均产量为21.08 g,17NPZ240-1的产量最高;相关分析表明全株角果数(r=0.897**)和每角粒数(r=0.534**)与单株产量极显著正相关。各材料倒伏系数介于153.74~359.61,17NDL20-7的倒伏系数最低,抗倒性最强;相关分析表明抗折力(r=-0.501**)、重心高度(r=502**)、茎粗(r=-0.816**)、分枝部位(r=0.472**)和主花序长度(r=-0.679**)与倒伏系数呈极显著相关关系。品质性状中,含油量介于33.40%~49.54%,平均含量为43.32%,17DNL32-3的含量最高;蛋白质含量介于16.87%~27.24%,平均含量为21.18%,16NTS309-4的含量最高;油酸含量介于23.62%~68.81%,平均含量为45.92%,17NPZ242-1的含量最高;亚油酸含量介于10.62%~18.48%,平均含量为14.87%,亚麻酸含量介于5.41%~8.97%,平均含量为7.60%,芥酸含量介于0.15%~27.51%,平均含量为10.80%,17NPZ52-3的亚油酸、亚麻酸含量最高,芥酸含量最低;硫代葡萄糖苷含量介于18.47~70.35μmol·g^(-1),平均含量为34.41μmol·g^(-1),16NTS309-7的含量最低;相关分析表明油酸、亚油酸、亚麻酸和芥酸含量间存在显著相关关系(0.421≤r≤0.913)。9个性状的综合隶属函数值F介于0.25~0.77,相差0.52,品系间差异较大。聚类分析将34份甘蓝型冬油菜材料划分为3大类群,第Ⅰ类群包含17份材料,综合表现最好,但平均含油量最低;第Ⅱ类群包含4份材料,综合表现较弱,倒伏系数均值最高,其他8个性状的平均值都处于中等水平;第Ⅲ类群包含13份材料,综合表现最弱,但平均含油量最高,倒伏系数均值处于中等水平,其他7个性状的均值都处于最低水平。