杂交晚粳稻通优粳1号产量及构成因子分析

对通优粳1号在不同基本苗、施氮量、多效唑化控条件下形成的产量及其构成因子进行回归、相关和通径分析。结果表明,穗数、粒数和粒质量对产量均有极显著的增产效应,其中穗数的增产效应最大,对产量起主要作用。农业生产中可根据不同生产栽培条件,以确保穗数、主攻粒数、争取粒质量为原则,合理制定栽培技术措施,在确保足穗的基础上主攻粒数和粒质量,促进穗、粒、重协调发展,提高产量。

密肥控对通优粳1号产量影响及高产技术优化

[目的]研究密肥控对通优粳1号产量的影响,优化高产栽培技术。[方法]研究采用D-饱和最优回归设计试验,研究了通优粳1号在不同基本苗、施N量和多效唑化控条件下的生育期、群体茎蘖动态、叶面积、干物质积累、植株性状、穗粒结构和产量变化,探明其高产技术农艺措施。[结果]密肥控三因素对产量影响程度从大到小依次为施N量、基本苗、多效唑施用量,增加基本苗和施N量有利于增加茎蘖和成穗密度,增加群体叶面积和干物质积累量。但基本苗和施N量过高,能降低成穗率和经济系数,延长生育期。适宜基本苗和施N量可协调茎蘖密度与成穗率之间的关系,保持灌浆期有较高的叶面积和干物质积累,提高产量。在基本苗为55.2×10~4个/hm^2、施N量为339.2 kg/hm^2、多效唑用量为97.9 g/hm^2时产量潜力最大,为12 606.0 kg/hm^2。[结论]产量>11 250 kg/hm^2的最佳农艺措施为基本苗52.6×10~4~60.1×10~4个/hm^2、施N量328.0~356.1 kg/hm^2、多效唑用量87.6~104.6 g/hm^2。

杂交晚粳通优粳1号高产制种技术

阐述了通优粳1号的亲本特征特性,如通优粳1号父母本生育期相差4~6 d,播始历期相差3~5 d,父本植株较母本高6~8 cm,花时较母本早30~60 min;介绍了其高产制种技术,主要包括适期播种、适时移栽、肥水管理、合理调控父母本花期、人工授粉、去杂保纯、病虫害防治、适时收割等方面内容,以期为该品种的推广应用提供参考。

杂交粳稻新品种“通优粳1号”特征特性分析

水稻是我国的主要粮食作物之一,杂交籼稻占籼稻种植总面积的70%左右,而杂交粳稻仅占粳稻种植面积的3%左右,前景巨大。通优粳1号是于2009年育成的杂交粳稻,2013年通过江苏审定,每667m2产650kg以上,属于国家二级优质稻谷。本文就杂交粳稻新品种"通优粳1号"的产量水平、品质特性、抗病特性以及栽培技术做简要的概述,为培育优质杂交粳稻提供参考。

优质高产杂交晚粳新组合通优粳1号

介绍了杂交晚粳新组合通优粳1号的选育经过及其植物学特征、产量表现、抗病性、米质性状、适宜种植区域、栽培和制种技术要点。

Effects of Density, Fertilizer and Chemical Control on Yield of Japonica Variety 'Tongyoujing 1' and Technology Optimization

The effects of different basic seedlings, N application rates and paclobutrazol measures on the development and yield of Tongyoujing 1 population were studied through the D-saturated optimum regression design tests. The results showed thatthe effects of various factors on yield under the experimental conditions were in order of N application rate basic seedlings paclobutrazol dosage. The increases of basic seedlings and N application rate are beneficial to the increases of population quantity and tiller density, and could improve number of panicles per unit area and increase the population leaf area and accumulated amount of dry matter.However, too-high basic seedlings and N application rate would reduce reproductive tiller percentage and economic coefficient, and prolong growth duration. Proper basic seedlings could coordinate the correlation between tiller density and productive tiller percentage, ensure higher leaf area and dry matter accumulation at filling stage,and improve yield of Tongyoujing 1. According to the multivariate nonlinear regression analysis of yield with various factors, Tongyoujing 1 could reach its maximum yield potential of 12 606.0 kg/hm2 under the basic seedlings of 55.2×104/hm2, N application rate at 339.2 kg/hm2, and paclobutrazol dosage of 97.9 g/hm2. The comprehensive agricultural measures for a yield higher than 11 250 kg/hm2were： basic seedlings 52.6 ×10^4-60.1 ×10^4/hm2, N application rate 328.0-356.1 kg/hm2, and paclobutrazol dosage 87.6-104.6 g/hm2.

High-yield Seed Production Techniques of Late Japonica Hybrid Rice Tongyoujing 1

The differences in growth period and seeding to heading duration of both parents of Tongyoujing 1 are 4-6 and 3-5 d, respectively. Plant height of the male parent was 6-8 cm higher than that of the female parent, and blooming time of the male parent was 30-60 min earlier than that of the female parent. The seed pro-duction technology points of Tongyoujing 1 include appropriate seeding （the differ-ence in sowing period of both parents is 3-5 d）, timely transplanting, reasonable layout （ratio of rows between both parents is 2：（6-8））, strengthening variety isolation, scientific fertilizer and water management （high fertilization for male parent and ade-quate fertilization for female parent）, reasonably regulating flowering period （to pro-mote flower synchronization）, artificial pollination （to improve outcrossing rate）, paying attention to miscel aneous plant removal and pest control and timely harvest.