It was studied the effect of different N application on flag caducity of wheat anaphase and wheat yield under straw mulch in dry area of Shaanxi province. The result shown that chlorophyll content in grouting stage is high with straw mulch. It could stave leaves caducity prolonging leaves function stage; it was propitious to improve kernel weight and yield. N Fertilization could restrain chlorophyll separation, and disparate fertilization restrain chlorophyll separation more strong. Nitrogen application in ...
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