两粮一肥就是在以秋作物高粱为主的情况下,套种春小麦或胡麻,小麦及胡麻收后,再复种一茬绿肥作物,借以达到粮、油、肥兼收和种地与养地相结合的目的。三种三收就是在以秋作物高梁为主的情况下,套种春小麦,小麦收后再复种一茬小日月黄豆或小糜子,以达到多种多收的目的。现将1974年的试验结果介绍如下: 一、种植方式 Liang Liang, a fertilizer is in the case of autumn crop sorghum, the intercropping of spring wheat or flax, wheat and flax harvest, and then crop a crop of green manure, in order to achieve the grain, oil, fertilizer and farming and farming phase The purpose of the combination. Three kinds of three harvest is in the case of autumn crops sorghum-based, intercropping spring wheat, wheat crop and then a crop of small sun and moon beans or small broomcorn, in order to achieve a variety of more than the purpose. Now the 1974 test results are as follows: First, the planting methods