Adding Value to Crop Production Systems by Integrating Forage Cover Crop Grazing

In addition to their value as cereal grains, wheat (Triticum aestivum L.) and triticale (× Triticosecale Wittmack) are important cool-season annual forages and cover crops. Yearling steer (Bos taurus) performance was compared in the spring following autumn establishment as for age cover crops after soybean [Glycine max (L.) Merr.] grain harvest. Replicated pastures (0.4 ha) were no-till seeded in three consecutive years into soybean stubble in autumn, fertilized, and grazed the following spring near Ithaca, NE, USA. Each pasture (n = 3) was continuously stocked in spring with four yearling steers (380 ± 38 kg) for 17, 32, and 28 d in 2005, 2006, and 2007, respectively. In 2005, average daily gain (ADG) for steers grazing triticale exceeded the ADG for wheat by 0.31 kghd-1d-1. In 2006, wheat ADG exceeded that for triticale by 0.12 kghd-1d-1. In 2007, steers grazing wheat lost weight, while steers grazing triticale gained 0.20 kghd-1d-1. Based on the 3-year average animal gains valued at $1.32 kg-1, mean net return ($ ha-1 yr-1) was $62.15 for triticale and $22.55 for wheat. Since these grazed cover crops provide ecosystem services in addition to forage, grazing could be viewed as a mechanism for recovering costs and adds additional value to the system. Based on this 3-year grazing trial, triticale was superior to wheat and likely will provide the most stable beef yearling performance across years with variable weather for the western Cornbelt USA.

Soil mineral nitrogen and yield-scaled soil N2O emissions lowered by reducing nitrogen application and intercropping with soybean for sweet maize production in southern China

The increasing demand for fresh sweet maize （Zea mays L. saccharata） in southern China has prioritized the need to find solutions to the environmental pollution caused by its continuous production and high inputs of chemical nitrogen fertilizers. A promising method for improving crop production and environmental conditions is to intercrop sweet maize with legumes. Here, a three-year field experiment was conducted to assess the influence of four different cropping systems （sole sweet maize （SS）, sole soybean （SB）, two rows sweet maize-three rows soybean （S2B3） intercropping, and two rows sweet maize-four rows soybean （S2B4） intercropping）, together with two rates of N fertilizer application （300 and 360 kg N ha-1） on grain yield, residual soil mineral N, and soil N2O emissions in southern China. Results showed that in most case, inter- cropping achieved yield advantages （total land equivalent ratio （TLER=0.87-1.25） was above one）. Moreover, intercropping resulted in 39.8% less soil mineral N than SS at the time of crop harvest, averaged over six seasons （spring and autumn in each of the three years of the field experiment）. Generally, intercropping and reduced-N application （300 kg N ha-1） produced lower cumulative soil N20 and yield-scaled soil N20 emissions than SS and conventionaI-N application （360 kg N ha-l）, respectively. $2B4 intercropping with reduced-N rate （300 kg N ha-~） showed the lowest cumulative soil N20 （mean value=0.61 kg ha-1） and yield-scaled soil N20 （mean value=0.04 kg t-1） emissions. Overall, intercropping with reduced-N rate maintained sweet maize production, while also reducing environmental impacts. The system of S2B4 intercropping with reduced-N rate may be the most sustainable and environmentally friendly cropping system.

Effects of Se on Reducing Membrane Lipid Peroxidation of Soybean under Continuous Cropping Stress

Reports the effects of selenium on lipid peroxidation of soybean under continuous cropping stress.Results of pot culture and plot experiment showed that appropriate amount of Se addition increased the activity of glutathione peroxidase (GSH-Px) significantly,and cleared away the excessive free radicals existing in soybean plant under continuous cropping stress,decreased the concentration of malonaldehyde(MDA),which is the end product of lipid peroxidation,maintained the perfection of chloroplast and mitochondrion structure,enhanced the resistance of continuous cropped soybean,and therefore increased the dry weight of seedlong and yield.

CROPGRO-Soybean Model Calibration and Assessment of Soybean Yield Responses to Climate Change

Process-based crop simulation models are useful for simulating the impacts of climate change on crop yields. Currently, estimation of spatially calibrated soil parameters for crop models can be challenging, as it requires the availability of long-term and detailed input data from several sentinel sites. The use of aggregated regional data for model calibrations has been proposed but not been employed in regional climate change studies. The study: 1) employed the use of county-level data to estimate spatial soil parameters for the calibration of CROPGRO-Soybean model and 2) used the calibrated model, assimilated with future climate data, in assessing the impacts of climate change on soybean yields. The CROPGRO-Soybean model was calibrated using major agricultural soil types, crop yield and current climate data at county level, for selected counties in Alabama for the period 1981-2010. The calibrated model simulations were acceptable with performance indicators showing Root Mean Square Error percent of between 27 - 43 and Index of Agreement ranging from 0.51 to 0.76. Projected soybean yield decreased by an average of 29% and 23% in 2045, and 19% and 43% in 2075, under Representative Concentration Pathways 4.5 and 8.5, respectively. Results showed that late-maturing soybean cultivars were most resilient to heat, while late-maturing cultivators needed optimized irrigation to maintain appropriate soil moisture to sustain soybean yields. The CROPGRO-Soybean phenological and yield simulations suggested that the negative effects of increasing temperatures could be counterbalanced by increasing rainfall, optimized irrigation, and cultivating late-maturing soybean cultivars.

Study on the Yield Reduction Mechanism of Soybean Planted under Continuous and every Second Year Cropping Conditions

Three-year investigation was conducted to demonstrate the mechanism of reduction of soybean yield aroused by continuous and every second year cropping. Compared to normal cropping, there are many unfavorable changes in some major elements of soybean plant and soil environment. Chloropyll content was lower. Phosphorous content of soybean plant was decreased seriously. Potassium content was lower while calcium content was higher. Magnesium content was wot affected and decreased in susceptive varieties. Some deseases and insects of soybean under continuous and wery second year cropping conditions became serious as continuous years prolonged. Organic matter content tended to go down from normal rotation to continuous cropping. Amount of bacteria and antinomyces decreased while amount of fungi increased. The development of symbiotic nitrogen fixation system wsa deteriorated.

Impacts of climate change on the yields of leguminous crops in the Guinea Savanna agroecological zone of Ghana

The impacts of climate change on crop yields are receiving renewed interest,with focus on cereals and staple crops at the regional and national scales.Yet,the impacts of climate change on the yields of leguminous crops in the local context has not been explored.Thus,an in-depth understanding of climate change in the local context may support the design of locally relevant adaptation responses to current and future climate risks.This study examined the impacts of climate variables(annual rainfall,annual average temperature,rainfall indices(rainfall onset,rainfall cessation,and the length of rainy days),and the number of dry days)on the yields of leguminous crops(groundnuts,cowpeas,and soybeans)in the Guinea Savanna agroecological zone of Ghana during the period of 1989-2020.The data were analysed using Mann-Kendall’s trend,Sen’s slope test,correlation analysis,and Multiple Regression Analysis(MRA).The findings revealed that annual rainfall,annual average temperature,rainfall onset,rainfall cessation,and the length of rainy days,and the number of dry days all showed varied impacts on the yields of groundnuts,cowpeas,and soybeans.The trend analysis detected a marginal decrease in the amount of rainfall,rainfall onset,and the number of dry days from 1989 to 2020(P>0.050).Annual average temperature and the length of rainy days substantially varied(P<0.050)from 1989 to 2020,showing an increasing trend.The findings also showed a marked upward trend for the yields of groundnuts,cowpeas,and soybeans during 2005-2020.The climate variables analysed above increased the yields of groundnuts,cowpeas,and soybeans by 49.0%,55.0%,and 69.0%,respectively.The yields of groundnuts,cowpeas,and soybeans fluctuated with the variability of 30.0%,28.0%,and 27.0%from 2005 to 2020,respectively.The three leguminous crops under study demonstrated unpredictable yields due to the variations of annual rainfall,annual average temperature,rainfall onset,rainfall cessation,the length of rainy days,and the number of dry days,which stressed the need for agricultural diversification,changing planting dates,using improved seed variety,and irrigation to respond to climate change.The results of this study implied that climate change considerably impacts crop production in the Guinea Savanna agroecological zone of Ghana,emphasizing the urgency of locally based and farmer-induced adaptation measures for food security and resilient agricultural systems.

根内根孢囊霉对连作大豆苗期植株生长发育的影响

以非转基因型大豆品种黑农48(病害敏感型的高蛋白品种)作为试验材料,以根内根孢囊霉(Rhizophagus intraradices,R.intraradices)为试验菌剂分别接种于大豆连作1年和非连作的大田土壤中,采用碱解离-酸性品红染色法和形态观测法测定根内根孢囊霉对连作苗期大豆根系丛枝菌根(Arbuscular mycorrhizal,AM)真菌侵染率、植株株高及茎粗的影响。结果显示,未施加根内根孢囊霉菌剂的大豆,连作导致AM真菌侵染率增高,株高和茎粗降低。而接种根内根孢囊霉的大豆,AM真菌侵染率、株高和茎粗均显著提高,表明根内根孢囊霉对连作大豆苗期植株生长发育具有一定促进作用。本研究为AM真菌的田间应用及提升黑龙江绿色大豆生产地位提供了理论依据。

极端高温天气条件下不同鲜食玉米品种的种植表现

为科学选择适宜鲜食玉米/鲜食大豆带状复合种植的耐密、抗病、抗倒的鲜食玉米品种,为玉米大豆带状复合种植技术示范推广提供品种支撑,开展了11个鲜食玉米品种与鲜食大豆的带状复合种植试验。结果表明:在2022年夏季极端高温且持续时间较长的气候条件下,鲜食玉米/鲜食大豆带状复合种植模式下不同鲜食玉米品种在双穗率、空秆率等植株性状及千粒鲜重、出籽率、结实率等产量性状上差异明显,其中晶白甜糯、虞珑糯1612、苏玉糯5号、苏科糯1801、苏科糯1901这5个品种结实率较高,表现出较强的耐高温能力;苏甜糯818、斯达糯41、扬甜糯104结实率较低,表现出较低的耐高温能力。复种区各玉米品种鲜穗产量在7332~11440 kg/hm^(2)之间,除苏科糯1801、晶白甜糯较对照苏玉糯5号(CK)略增产外,其他各品种均较对照苏玉糯5号(CK)减产,减产幅度在1.53%~34.58%之间,以苏甜糯818、苏科糯1501减产最严重。清种区各玉米品种鲜穗产量在7638.89~14828.70 kg/hm^(2)之间,除苏科糯1801较对照苏玉糯5号(CK)略增产1.42%外,其他各品种均较对照苏玉糯5号(CK)减产,减产幅度在0.95%~47.75%之间,以苏科糯1501减产最严重。

垄作和覆膜下盐碱地水盐运移和大豆产量的变化

选择河北省黄骅市中度盐碱土区布置夏播大豆[Glycine max(L.)Merr.]田间试验,共设平播(对照)、平播覆膜、垄作及垄作覆膜4个处理,研究垄作和覆膜对土壤水盐运移和大豆产量的影响。结果表明,与传统平播方式相比,平播覆膜处理对土壤水盐运移和大豆产量的影响不显著;垄作处理能显著改变土壤水盐分布,特别是大豆生长中后期降雨量开始减少后,垄作定植沟会产生叠加集雨效果,显著提高大豆生长中期0~20 cm和20~40 cm土壤含水量,减缓作物生长后期向表层返盐进程,有效降低土壤表层盐分含量,对保障大豆植株生长和产量均有一定的促进效果,可增产27.2%;垄作覆膜处理效果与垄作处理类似,覆膜措施影响不显著。垄作技术可以作为滨海盐碱地夏播大豆种植的农耕措施。

1963—2022年气候变化对黑龙江省大豆需水量的影响

为揭示黑龙江省气候变化对大豆需水量的影响,基于61个气象站1963—2022年逐日气象数据和20个农业气象观测站1993—2013年大豆生育期资料,利用五日滑动平均法、单作物系数法、ArcMap空间分析、MATLAB计算和Mann-Kendall趋势检验法,计算并绘制≥10℃活动积温、大豆不同品种熟型交替变化下的需水量、有效降雨量、需水量与有效降雨量耦合度及三者气象倾向率的分布图。结果表明:(1)1963—2022年黑龙江省≥10℃活动积温呈增加趋势,1993—2002年是活动积温快速增长转折期,划定1973—1992年为积温平缓增长期,1993—2022年为积温快速增长期。不同熟型大豆种植边界线北移东扩明显。(2)1963—2022年黑龙江省大豆生长季内有效降雨量为377 mm,呈增加趋势,空间分布上由西向东表现为先增加后减少;需水量为312 mm,以-3.14 mm·10a^(-1)的平均速率下降,空间分布上由西向东呈减少趋势。(3)1963—2022年黑龙江省大豆生长季内需水量与有效降雨量的耦合度总体呈增加趋势,泰来县增加最明显;北部部分地区呈减少趋势,加大对水资源的消耗。(4)气象因子中温度和降雨量显著上升,日照时数和风速显著下降,使得大豆需水量下降、需水量与有效降雨量的耦合度上升,有利于缓解大豆种植区干旱。

根内根孢囊霉对正茬和迎茬大豆生物量的影响

本研究旨在探究根内根孢囊霉(Rhizophagus intraradices)在缓解大豆迎茬障碍和提高大豆生物量方面的效应。以‘黑农48’品种的大豆为对象,通过湿筛倾析-蔗糖离心法、碱解离-酸性品红染色法以及直接测量法,分别对AM真菌孢子密度、侵染率及大豆生物量进行了测定。结果显示,正茬大豆田的根际土壤中孢子密度是迎茬的2.2倍。在自然土壤条件下,接种R.intraradices的正茬与迎茬土壤中的大豆植株,其根系AM真菌侵染率和生物量均显著高于未接种处理组,其中根长最为显著,分别提高了31.60%和33.57%。在迎茬土壤中接种R.intraradices菌剂的大豆生物量与正茬土壤中未接种处理组的接近。在相同接菌处理条件下,灭菌土壤中的大豆植株根系AM真菌侵染率和生物量均低于自然土壤。本研究这些发现为缓解大豆迎茬障碍和提升大豆产量提供了重要的理论依据。

北大荒集团大豆重迎茬单产提升集成配套技术指导意见

近年来,随着北大荒集团大豆种植面积不断扩大,大豆重迎茬现象普遍,导致大豆病虫害加重,产量和品质降低,严重制约大豆产业发展。文章以“良田良种良法配套”的标准化生产模式为技术载体,以土壤、品种、栽培、植保等为技术发力方向,形成大豆重迎茬单产提升集成配套技术指导意见,以期为北大荒集团大豆科学生产提供技术指导,助力大豆油料产能提升。

不同改良剂对黑土区大豆连作土壤养分平衡及细菌群落的影响

为明确不同碱性土壤改良剂对黑土区大豆连作障碍的缓解效果,于2023年设置6种不同施肥处理,即不施肥(CK)、常规施肥(CF)、磷肥减量+钙镁磷肥改良剂(CPK)、常规施肥+生物炭(CBK)、常规施肥+生石灰(CNK)及常规施肥+腐植酸肥料(CHK),测定土壤理化性质和土壤微生物细菌群落多样性和丰富度等指标。结果表明:与CK、CF处理相比,施用改良剂使土壤有机碳含量增加3.9%~6.9%,全氮含量增加17.0%~41.0%,速效钾含量增加13.9%~21.8%;大豆产量提升9.8%~32.1%,其中CBK处理下大豆产量提升幅度最大。改良后土壤细菌的优势菌门与改良前相同,但细菌的丰富度及多样性升高;与CK和CF处理相比,除CNK处理外的其他改良剂处理变形菌门(Proteobacteria)的相对丰度提高10.6%~16.6%。土壤微生物多样性与土壤理化性质的相关性分析表明,土壤pH值与土壤微生物Alpha多样性指数多呈正相关关系,土壤交换性酸含量则与Alpha多样性指数呈负相关关系;土壤有效磷含量与Simpson指数呈显著负相关关系。综上所述,施用改良剂能优化大豆连作土壤的理化性质及微生物环境,同时提高大豆产量,常规施肥配施生物炭处理效果最佳。

大豆谷胱甘肽还原酶基因的扩增及连作胁迫应答

利用数据库Phytozome获得大豆胱甘肽还原酶(Glutathione reductase,GR)基因4个成员的编码序列(Coding sequence,CDS)序列,以大豆叶片和根中RNA为模板,经RT-PCR扩增获得Glyma10g03740和Glyma02g16010基因,二者大小均为1638 bp,基因结构相似;获得Glyma16g27210和Glyma02g08180基因,二者结构相似,基因大小均为1506 bp。系统进化分析显示,Glyma10g03740/Glyma02g16010和Glyma16g27210/Glyma02g08180蛋白聚类于不同分支,但分别都与豇豆、尖叶菜豆和芸豆亲缘关系最近。4个成员的结构域相同,均含有FAD/NAD-binding_dom结构域和Pyr_nucl-dis_OxRdtase_dimer结构域。三级结构显示Glyma16g27210和Glyma02g08180构象相似,Glyma10g03740和Glyma02g16010构象相似,4个蛋白均以二聚体结构存在,互作蛋白完全相同,包括2个硫氧还蛋白还原酶和8个硫氧还蛋白。RT-qPCR方法分析GRs基因对连作逆境的响应,结果显示,在连作胁迫下,敏感品种HF55的GRs基因表达在根中启动较早(出苗后15 d内),而叶片中启动较晚,出苗后45 d时表达仍呈上升趋势;对于抗性品种KX8,根和叶片中GRs基因各成员均在出苗后15~45 d表达量达到最高,30 d时根中GRs基因总表达量增加达19.03倍,叶片中GRs基因总表达量增加2.50倍。

施氮与种间距离下大豆/玉米带状套作作物生长特性及其对产量形成的影响

为明确施氮和种间距离下套作作物生长特性及其对产量形成的影响。本文以大豆/玉米带状套作系统为研究主体,探究不同氮水平(施氮与不施氮)与种间距离(玉豆间距30、45、60和75 cm、单作100 cm)下作物生长率、干物质积累与分配及产量差异,并对作物干物质积累过程进行拟合,综合分析作物生长规律和产量效益。结果表明:玉米生长率在抽雄期至乳熟期达最大,不施氮下以间距30 cm(MS30)最高,较玉米单作(MM100)高出34.99%。套作大豆生长率在初花期前显著低于单作(SS100),而初花期后高于SS100,以间距60cm(MS60)最高,盛花期—盛荚期在不施氮下较SS100高出78.91%。Logistic方程可较好的拟合玉米、大豆的干物质积累过程,且R2均在0.95以上。与不施氮相比,施氮推迟了玉米干物质积累高峰,提高了干物质积累量;套作大豆生育前期干物质积累慢于单作,而生育后期间距45cm(MS45)、MS60干物质积累逐渐与单作持平甚至超过单作。施氮提高了玉米籽粒干物质分配率而显著提高产量,2年间玉米产量分别提高10.05%、40.90%。随种间距离增加套作大豆产量呈先增后减趋势,以MS60最高,MS30最低,MS60两年间在不施氮与施氮下较MS30分别平均高出23.88%、31.77%。套作下土地当量比均在1.35以上,其中以施氮下MS60最大(1.89)。适宜的种间距离(间距60 cm)可实现套作下玉米和大豆协同生长,提高作物生长率、促进干物质积累与分配、提高系统产量和土地当量比。

接种丛枝菌根真菌配合氮肥减施对辣椒–大豆间作体系氮素吸收的影响

【目的】叶菜及经济效益较高的茄果类如辣椒、番茄等占云南省设施蔬菜栽培面积的62.19%,蔬菜连作以及氮肥的大量施用制约了设施蔬菜高产优质,降低了土壤质量。研究接种丛枝菌根真菌(AMF)和氮水平对作物生长、土壤氮残留及生物相关特性的影响,为提高设施蔬菜产量,减少氮肥施用量,降低土壤氮残留提供理论依据。【方法】以大豆和辣椒间作为种植模式进行盆栽试验。设计了接种AMF、氮肥用量、种植模式三因素试验。在大豆、辣椒单作、大豆辣椒间作3个种植模式下,分别设3个施氮(N)水平:0、100、200 mg/kg土(N0、N1、N2);每个氮水平下,再设土壤不接种、接种AMF菌剂处理(NM、AMF),共组成18个处理。在蔬菜收获期,取样测定蔬菜生物量、根系长度、AMF侵染率,测定根际土壤硝态氮、铵态氮含量、氮代谢酶活性以及菌丝密度。【结果】接种AMF、施氮量、种植模式及三者的交互作用对辣椒和大豆根系AMF侵染率、植株生物量和根长的影响都达到显著水平(P<0.01)。N1处理显著增加了辣椒、大豆根系的菌根侵染率,且在间作条件下的增幅最高;N1处理下,接种AMF和间作均显著增加了辣椒、大豆植株生物量和氮吸收量,抑制了根系的伸长。N2处理显著增加了土壤铵态氮和硝态氮含量,接种AMF显著降低了辣椒、大豆植株根际土壤铵态氮和硝态氮含量,间作则显著降低了辣椒根际土壤硝态氮含量和大豆根际土壤铵态氮含量。接种AMF、间作均明显增加了植物根际土壤中蛋白酶、脲酶及硝酸还原酶活性。N1处理显著增加了土壤菌丝密度,间作条件下接种AMF显著增加了辣椒根际土壤菌丝密度。【结论】配合间作和接种AMF措施,氮肥减施可提高蔬菜根际菌根侵染率,增加土壤中菌丝密度,提高氮代谢酶活性,从而促进蔬菜生长和氮素吸收,减少土壤氮残留,因此,蔬菜间作种植下,接种AMF配合氮肥减施有望成为改善设施土壤肥力,提高氮肥利用效率,促进蔬菜健康生长,减少土壤氮素残留的配套技术。

基于rDNA测序的连作大豆土壤微生物群落变化规律研究

为寻找连作障碍与土壤微生物群落之间的联系,从土壤微生物群落生态的角度研究大豆连作障碍的机理,以大豆正茬、连作4,6,8和10年的大豆盛花期土体和根际土壤为研究对象,采用16S/18S rDNA PCR-DGGE方法,对比连作不同年份土壤中细菌和真菌种群结构的变化规律,并对差异性电泳条带进行测序比对。结果显示:聚类分析表明,连作不同年份的土体土聚在一簇,根际土聚在另一簇,土体土细菌和真菌群落结构明显不同于根际土壤;16S rDNA的DGGE图谱表明,土体细菌群落没有发现明显的条带变化,根际细菌种群出现了明显的变化,变化较大的细菌种群经序列比对表明多为Proteobacterium,是一种固氮菌;18S rDNA的DGGE图谱表明,各处理间真菌结构存在一定差异和变化,不同处理间一些条带出现或消失,变化较大的真菌种群经序列比对表明多为Trichosporon pullulans、Temellomycete、Phoma sp.、Cladosporium cladosporioides、Trichosporon pullulans和Cyathus striatus。结果说明细菌和真菌的根际效应很明显,连作大豆细菌种群变化不大,对真菌种群结构影响较大,研究结果可为大豆连作障碍机理研究提供科学依据。

大豆玉米间作带状复合种植技术及其效益分析

大豆、玉米是垣曲县重要的粮油作物,保证大豆、玉米安全高效生产意义重大。单一种植技术模式下,大豆和玉米相互争地的问题较突出,降低了土地资源利用率及土地产出率,应用大豆玉米间作带状复合种植技术,可实现大豆玉米兼容协调生长,提升土地资源利用率及农业生产效益。以垣曲县为例,对大豆玉米间作带状复合种植技术要点与效益展开了研究。

大豆玉米带状复合种植技术初探

大豆玉米带状复合种植模式是农业农村部推广的稳玉米、扩大豆的种植模式,目标是在保证玉米基本不减产的基础上,通过间种或套种增收一季大豆。2022—2023年,汨罗市对大豆玉米带状复合种植模式进行试验与示范推广,全市种植面积达2000 hm^(2),玉米平均单产6900 kg/hm^(2),大豆平均单产1740 kg/hm^(2),与单作玉米相比,玉米单产仅减少690 kg/hm^(2),且全市增产大豆约3500 t,2年合计增收2100多万元。重点介绍了大豆玉米带状复合种植模式从整地到收获的全程规范化栽培技术。

9种杀虫剂对玉米大豆带状复合种植大豆田甜菜夜蛾的防治效果

为了探究杀虫剂对玉米大豆带状复合种植大豆田甜菜夜蛾的防治效果,选取9种杀虫剂开展药剂筛选试验,结果表明,各处理试验药剂对大豆植株安全;喷施6%乙基多杀菌素SC 450 mL/hm^(2)、20%多杀霉素SC 450 mL/hm^(2)、5%溴虫氟苯双酰胺SC 450 mL/hm^(2)对玉米大豆带状复合种植大豆田甜菜夜蛾具有较好的防治效果,药后1 d对大豆田甜菜夜蛾的防效均达65%以上,药后3 d均达85%以上,药后7 d均达90%以上。以上3种处理药剂防治效果显著高于其他药剂处理,且这3种药剂处理药效迅速,可在短时间内显著减少甜菜夜蛾的种群数量。该研究监测了2022年8月滨淮农场地区甜菜夜蛾发生情况,为玉米大豆带状复合种植大面积生产科学防控甜菜夜蛾提供依据。