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近几年来,我县苕子、箭舌豌豆等越冬绿肥,已发展到10万多亩。但是,有些地方由于播量小,播种晚,不浇水和受冻害而致使产草量不能提高,肥效差。因此,如何提高绿肥鲜草产量,充分发挥其增产作用,是个重要课题。 1975年开始,我县开展了越冬绿肥增产的科研活动,收到了良好的效果。尤其在越冬绿肥冬灌方面作了些试验。一般在绿肥生长过程中仅浇一水的鲜草产量提高30％以上,冬春各浇一水的鲜草产量可以提高50％以上,甚至可成倍增加鲜草产量。越冬绿肥进行冬灌有三点好处:
In recent years, my county raccoon, arrow tongue peas and other overwintering green manure, has developed to 100,000 mu. However, in some areas, the yield can not be improved due to the small amount of sowing, late sowing, no watering and frost damage, and the fertilizer effect is poor. Therefore, how to improve the yield of green manure grass and give full play to its role of increasing yield is an important issue. Since 1975, our county has carried out scientific research activities of increasing winter green manure production and received good results. Especially in the winter greening winter irrigation made some tests. Generally in the growth process of green manure only a fresh water yield increased by more than 30%, winter and spring pouring a fresh grass yield can be increased by more than 50%, or even increase the yield of fresh grass. Winter green manure winter irrigation has three advantages: