氮肥分期施用对优质小麦产量和品质的影响

Effect of Fractional N Fertilization on the Yield and Quality of Good Quality Wheat

研究了分期施用氮肥对优质小麦产量和品质的影响。结果表明:在施纯氮总量210 kg/hm2条件下,氮肥底肥50%+拔节期30%+孕穗期20%处理的穗数、穗粒数和千粒重可同步增长,产量最高。产量水平相对较高时,前氮后移的分期施氮方式有助于籽粒综合品质的提高;产量水平较低时,分期施氮对提高小麦籽粒品质作用不明显。

The effect of fractional N fertilization on the yield and quality of good quality wheat was studied. The result showed that the wheatear, ear grains and 1 000-grain weight could increase together, and the yield came to the height on the condition of N fertilization 210 kg/hm^2 with base fertilizer 50% ＋ jointing stage 30% ＋ boot stage 20%. When the yield level was higher, fractional N fertilization could improve the comprehensive quality of grains. When the yield level was lower, fractional N fertilization could not significantly improve the comprehensive quality of grains.