玉米叶片干物质分配模型研究

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。

Study on the Dry Matter Distribution Model of Maize Leaf

Based on the cumulative temperature, the dynamic changes of maize leaf and whole plant dry matter accumulations under different treatments were searched. The result showed that the difference of dry matter accumulation is big while the distribution of dry matter is small. Through studying the dynamic change of dry matter in whole plant and leaf of maize, we can search the distribution under the continuously change of accumulation temperature. By unitary processing according to max, established the dry matter distribution model of Zhongnongda 4, the form of the model is y=10.653x³-25.492x²+19.121x-3.941 4, R²=0.964 1.By the historical data to check the model, we could see from the simulation effect that the model can basically affect the distribution relationship of leaf and the whole plant.