摘要
通过不同播期、播种密度和氮肥运筹方式对不同冬小麦品种籽粒产量及构成因子影响的研究,探讨了通过调控播期、密度及氮肥运筹方式实现不同品种丰产高效的可能性。试验结果表明,播期、播种密度和氮肥运筹方式均显著影响小麦产量及产量构成因子,播期以10/15￣10/22最为适宜,播种密度以120万/km2￣240万/km2为宜,氮肥运筹方式以N210(3:5:2)最好,其次为N210(5:5)。保证供试小麦品种实现9000kg/hm2产量的高产途径为主茎和分蘖并重,适宜的产量结构为:4:4:4,即亩有效穗数39.4￣44.4万,穗粒数35.3￣40.0,千粒重40.2￣45.8g。
Effects of sowing date, planting density and nitrogen application regime on grain yield and compositions in winter wheat .It was shown that all three factors contributed significantly to yield but depend-on the cultivars of wheat. The most suitable sowing period was from 10/15 to 10/22 and planting density was from 120 ×10^4plants/hm^2 to 240 ×10^4 plants/hm^2. Meanwhile, the first suitable nitrogen application technique was 210kg/hm^2 （basal N fertilizer： jointing stage N fertilizer： booting stage N fertilizer =3：5：2） and the second suitable nitrogen application technique was210kg/hm2 （basal N fertilizer ：jointing stage N fertilizer =5：5）.To make the winter wheat have a high yield above 9000 kg/hm^2, stem and tiller were indicated equal important, and suitable yield components proportion was 4：4：4, viz. the panicle number was from 39.4×10^4 to 44.3×10^4 plants per 666.7m^2, the grains number per ear was from 35.3 to 40.0 and the 1000grains weight was from 40.2 to 45.8g.
出处
《中国农学通报》
CSCD
2006年第9期141-143,共3页
Chinese Agricultural Science Bulletin
基金
国家粮食丰产科技工程项目"河南小麦夏玉米两熟丰产高效技术集成研究与示范("2004BA520A)
河南省重大科技攻关项目"小麦丰产高效技术集成与示范("0522010100)。
关键词
播期
密度
氮肥运筹方式
产量
Sowing date, Planting density, Nitrogen application regime, Grain field
