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目前,我省在以粮油为主的红壤旱地上,作物安排仍然是只种不养或少养,绿肥面积越来越小,红壤旱地有机肥料长期得不到适当的补充,至使土壤肥力下降、旱作产量徘徊不前。为了开辟有机肥源,我们从1975年开始试验,先后在小麦、油菜等作物收获以后,利用5—6月份内(约40～45天)的茬口空闲时间播种一期短季绿肥,可获得一、二千斤的青草产量,用作红壤旱地肥料,增加了土壤有机质,促进了粮油作物增产。现将试验情况简报如下:
At present, the crop of irrigated red soil mainly in grain and oil in our province is still irrigated or undernourished and the area of green manure is getting smaller and smaller. Organic fertilizers in dry red soils have not been supplemented for a long time to reduce the soil fertility , Dry production stagnated. In order to open up the organic fertilizer source, we started the experiment in 1975 and successively sowed a short-term green manure using the stubble free time in 5-6 months (about 40-45 days) after harvesting of wheat, rape and other crops to obtain a , Two kilograms of grass production, as red soil dryland fertilizer, increased soil organic matter, and promote grain and oil crops yield. Now briefing the test as follows: