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我省已有20多年种植草木樨绿肥的历史。生产实践证明,它在培肥地力和增加产量等方面已起到了良好的作用,尤其在西部风沙干旱地区,由于大力发展草木樨,实行粮草轮作,土壤肥力得到了恢复,单产明显提高。但近几年来,由于食用葵花的发展,严重挤压了草木樨绿肥的面积,使已形成的粮草轮作体系受到不同程度的冲击,这是目前生产上出现的如何使用地、养地统筹兼顾、合理安排的新问题。为此我们于1980年开展了草葵结合用地养地种植形式的调查研究。在院内试验田和农村社队布置试验的同时,还进行了面上的调查研究。现将两年调查试验资料整理如下。
The province has more than 20 years of planting green grass and green manure history. Production practice has proved that it has played a good role in fertilizing soil fertility and increasing yield. Especially in the dry areas of wind and sand in western China, soil fertility has been resumed due to the vigorous development of grass and shrubs, and the unit yield has remarkably increased. However, in recent years, due to the development of edible sunflower, the area of green manure fertilizer has been severely squeezed, which has impacted the formed crop rotation system to different extents. This is how to make use of land, New issues reasonably arranged. To this end, we conducted a survey in 1980 on the planting forms of grassland and irrigated land. In the hospital experimental field and rural community team layout test at the same time, also carried out on the surface of the research. Now two years of survey data are summarized as follows.