三垅

大豆保护性施氮的研究&Ⅲ.大豆三垅栽培模拟分解比较试验

Studies on protective nitrogen fertilization in soybean ──ⅲ . the imitative resolving comparative trial of soybean " ridge three " culture practices

本文在总结旱作大豆综合高产栽培技术&三垅栽培法的基础上，从系统工程的角度探讨了农作物高产栽培技术中各子系统的地位和作用以及它们间的相互关系。

Based upon the sum-up of the high-yield comprehensive cultivation technique of the drought soybean - " Three ridges cultivation technique ", this thesis angues the position and the significance that each individual sub-system takes in the technique , and the cooperation among them from the perspective of systems engineering .

以玉米三种垅作形式为主要内容，研究不同垅作的增产机制及相应的群体结构，提高玉米大面积连片种植的单产水平。

In this study , we have mainly undertaken the experiment on three kinds of ridge cropping of corn to investigate the machanism of increasing in yield of different ridge cropping and corresponding population structure in order to increase the unit yield of corn in large acreage planting .