论文部分内容阅读
施氮量与单株叶面积呈极显著正相关，γ＝0．998**；N120处理的叶面积指数最大值为4．87，LAI3．0持续时间长达40天以上，符合高产的LAI动态规律；叶绿素含量与光合速率呈二次曲线相关，最佳叶绿素含量为1．27mg／g；在各氮素水平处理中，N120处理的单株光合速率和群体光合速率均处于最高水平，有利于产量形成和糖分积累。
The nitrogen application rate was significantly and positively correlated with the leaf area per plant (γ = 0.998 **). The maximum leaf area index of N120 was 4.87 and the duration of LAI3.0 was longer than 40 days, which was consistent with LAI Dynamic law; chlorophyll content and photosynthetic rate were quadratic curve, the best chlorophyll content of 1.27mg / g; in each level of nitrogen treatment, N120 treatment of single plant photosynthetic rate and population photosynthetic rate are at the highest level, there are Conducive to the formation of yield and sugar accumulation.