巴盟地区无霜期130天左右,为一年一熟制地区。当地糜子在5月底6月初种植,播前还有两个月空闲时间。这段时间的有效积温在800～900℃。充分利用这一空闲时间的光、热能等自然能源,种植翻压一茬耐寒速生绿肥是提高土壤肥力和增加产量的有效措施。巴盟农研所从1979年开始在所内进行了这项试验,初见成效。从试验结果看,4月1日播种门源油菜和紫花苕子,门源油菜生 Bamens frost-free period of 130 days or so, a year cooked area. The local millet is planted at the end of May and early June, with two months before sowing time. The effective accumulated temperature during this period is 800 ~ 900 ℃. Take full advantage of this free time of light, heat and other natural energy, planting a turnip stubble green fast-growing green manure is to improve soil fertility and increase production effective measures. Banyan Agricultural Research Institute from 1979 began within the trial, the initial success. From the test results, April 1 sowing door source rape and prickly heat, door source rape students