吉林西部春玉米的叶面积与有效积温的相关性

Correlation Between Leaf Area of Spring Maize and Effective Accumulated Temperature in Western Jilin Province

为吉林西部玉米生产提供参考,利用2012—2014年在吉林省白城市农试站3年大田分期播种试验资料及相对应气象数据,将出苗后的有效积温利用Logistic标准生物曲线方程进行标准化,建立春玉米相对叶面积指数与其对应的标准化曲线关系模型。结果表明:模型模拟效果较好,2012年和2013年模拟方程相近,未发生阶段性干旱和其他灾害;玉米不同发育期的叶面积指数较小,可能因2014年发生阶段性干旱,但经标准曲线无量纲化后,模拟方程与前2年一致。因此,叶面积指数模拟可采用该方法。

The effective accumulated temperature of Spring maize after seedling emergence was standardized by using Logistic standard biological curve equation according to the experimental data of field sowing at different time and corresponding meteorological data from Baicheng Agricultural Experimental Station,Jilin from2012to2014and the relational model between relative leaf area index and corresponding standardization curve is established to provide a reference for production of Spring maize in Western Jilin Province.Results:The model simulation effect is good.The simulation model in2012was similar to the simulation model in2013and there were no periodic drought and other disasters in2012and2013.The leaf area index of maize was smaller at different growing stages due to periodic drought in2014but the simulation equation after standard curve dimensionless was in accordance with the simulation equations in2012and2013,which indicates that the method can be used to simulate the leaf area index.