安徽农业科学2017，Vol.45Issue(23)：17-21,5.
密肥控对通优粳1号产量影响及高产技术优化
Effect of Density, Fertilizer and Chemical Control on Yield of Japonica Varieties Tongyoujing 1 and High-yield Technology Optimization
摘要
Abstract
[Objective] To study the effect of density,fertilizer and chemical control on yield of japonica varieties Tongyoujing 1,and optimize the high-yield culture technique.[Method] Through the D-saturated optimum regression design tests,growth period,group tillers dynamics,leaf area,dry matter accumulation,plant traits,grain structure and yield of the japonica varieties Tongyoujing 1 was studied under the condition of different density,fertilizer levels and dosage of multi-effect azole to prove high-yield agricultural measures.[Result] The influence degree'order of three factors:N application rate ＞ basic seedling ＞ multi-effect azole.Increase of basic seedlings and N fertilizer was beneficial to increase the seedlings number,panicles density,leaf area and dry matter accumulation.But the exceeded basic seedlings and N fcrtilizer were easy to reduce the earing rate and economic coefficient,to extend the growth period.The reasonable density-fertilizer combination can coordinate the relationship between the tillers density and earing rate,keep the leaf area and the dry matter accumulation higher in filling period,obtain higher yield.The maximum yield potential was 12 606.0 kg/hm2 when the basic seedlings was 55.2 × 104 plants/hm2,N application rate was 339.2 kg/hm2 and dosage of multi-effect azole was 97.9 g/hm2.The agricultural measures to obtain yield over 11 250 kg/hm2 were that the basic seedlings was 52.6 × 104-60.1 × 104 plants/hm2,and N application rate was 328.0-356.1 kg/hm2,and the dosage of multieffect azole was 87.6-104.6 g/hm2.关键词
通优粳1号/基本苗/施N量/多效唑/产量Key words
Tongyoujing 1/Basic seedling/N application rate/Multi-effect azole/Yield分类
农业科技引用本文复制引用
周根友,夏华,陈启康..密肥控对通优粳1号产量影响及高产技术优化[J].安徽农业科学,2017,45(23):17-21,5.基金项目
江苏省农业三新工程项目“杂粳新品种通优粳1号制种技术研究与示范推广”(SXGC[2014]188). （SXGC[2014]188）
