黄土高原南部作物种植制度改革途径调查研究

Improvement of Crop Systems in Southern Loess Plateau

本研究通过典型调查和数年基点监测，针对黄土高原南部在传统种植制度解体后，随着养地作物面积急剧减少，出现的小麦长期连作加化肥的弊端，总结果出以人均耕地多少为基础，改革以作物布局、轮作倒茬、间套复种为主要内容的种植制度的途径，并提出了农牧结合、粮经发展、旱水过渡和果粮问套等类型发展模式。

Case studies and spot monitoring were conducted to seek out the improving ways to counter the tendency that more and more long term wheat monocultivation with excessive shemical fertilizers since the disintegratation of traditional crop systems and the decrease of crops which can nourish the soil. The improvement consists of crop rotation, intercropping and adjustment of crop distribution for those areas with fewer arid lands and big population, and also combinations Of agriculture and husbandary, cereal crops and economic crops, dry land and irrigatable land,intercropping of fruit trees with crops. This may be adaptable to those lands with similar peculiarities.