【摘要】 采用田间小区、池栽和大田生产试验三种方法,通过对不同带型小麦边际效应的研究,理论模拟了间套条件下小麦产量的变化规律,提出了间套优势的概念和对小麦种植方式进行优化评价的思路。即间套优势(RIS)=相对产量/相对占地面积,它是边行优势大小和边行优势在总产量中所占比例的综合反映,利用RIS是否大于1可作为间套种植是否合理的依据。通过理论分析和实践验证,"20+40cm"(畦麦行距25cm,小麦小行距即沟宽20cm,大行距即垄宽50cm)小麦种植模式具有间套通用性强、适应性广、夏秋双高产的特点,对于实现小麦间套种植方式的规范化和机械化,可能具有重要意义。更多还原

【Abstract】 Based on the results of studying on the border effect of wheat in different strip planting patterns, the wheat yields were analyzed and generalized in theory, the term of relaying or intercropping superiority (RIS) was proposed, and the method for evaluating planting patterns, namely RIS>1 or RIS<1 was suggested. By practicing this method in experiment and production application, it was proved that the pattern of "20+40 cm" was a better one because of its good popularity in multiple cropping, good adaptation to different cultivation conditions and high yielding both of wheat and other crops.更多还原