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在积温模型的基础上,对不同处理的玉米叶片及整株干物质积累动态变化进行探讨,研究玉米叶片干物质分配的规律和特点。结果表明,在不同栽培措施处理下,玉米的干物质积累差别较大但干物质的分配比例差别并不大;可以通过追踪植株整株干物重以及叶片干物重的动态变化研究在连续的积温变化条件下玉米叶片干物质分配的变化情况,对积温进行归一化处理后建立了中农大4号的玉米叶片干物质分配模型,模型为y=10.653x3-25.492x2+19.121x-3.941 4,R2=0.964 1。用历史数据对模型进行检验,从模拟效果上看,模型基本能够反映作物叶片与整株干物重的分配关系。
On the basis of the accumulated temperature model, the dynamic changes of dry matter accumulation of maize leaves and whole plant under different treatments were discussed to study the law and characteristics of dry matter distribution of maize leaves. The results showed that under the different cultivation measures, the dry matter accumulation of maize varied greatly but the difference of dry matter distribution was not significant. The change of accumulated temperature could be studied by tracking the whole plant dry matter weight and the dry weight of leaves. Dry matter distribution of maize leaves under the conditions of changes in the accumulated temperature normalized to establish the Zhongnongda maize leaf dry matter distribution model, the model y = 10.653x3-25.492x2 + 19.121x-3.941 4, R2 = 0.964 1. The historical data is used to test the model. From the simulation results, the model can basically reflect the distribution of crop leaves and whole plant dry matter weight.