玉米几个主要农艺性状与单株产量关系的探讨

Effect of Crop Stubbles Remained in Soil on Effective Trace Elements of Soil

摘要:

利用15个中晚熟玉米品种的7个主要农艺性状对单株产量的表型值资料，经过简单相关分析和通径分析，探讨各性状与单株产量的关系。从分析结果看出，穗位高、穗粗、行粒数、百粒重与单株产量呈显著或极显著正相关，但对产量贡献较大的是行粒数、百粒重和穗粗。以这几个因子作为选择目标直接选择，并兼顾对其他性状的选择，较易选育出高产品种。

Abstract:

This article studied the relationship of corn stubbles remained in soil and soil effective trace elements in different corn growth phase.The results showed that the soil effective trace elements with corn stubbles were higher than that without corn stubbles in any corn growth phase.This result proved that corn stubbles in its decomposition period improved soil physical and chemical characters, and promoted trace elements’ transformatiom from ungiveble form into giveble form and increased the effective trace elements in soil. The results above also showed that corn stubble remained in soil was a good way to fertilize soil. The quantity of soil effective trace element in different growth phase proved corn had different period of absorbing peak to different trace elements.