田菁是一种能固氮、喜温、喜磷、耐湿、耐瘠、耐碱的豆科植物,鲜草含氮0.52％,含磷0.07％,含钾0.15％,是一种良好的夏季绿肥。 近年来,我省大冶、应城等县对早稻间种田菁做了大量试验、示范工作;我们结合教学、在院内外也进行了试验。试验结果都表明:(1)早稻间种田菁,一般每亩能收田菁鲜草1,000斤以上,可解决晚稻的部分底肥;(2)早稻间种田菁对早稻产量有一定影 Tianjing is a kind of leguminous plants that can fix nitrogen, hi temperature, hi phosphorus, humidity resistance, barren resistance and alkali resistance. Fresh grass contains 0.52% nitrogen, 0.07% phosphorus and 0.15% potassium, which is a good summer green manure . In recent years, Daye and Yingcheng counties in our province have done a great deal of experiments and demonstrations on the cultivation of early rice varieties. We have also conducted experiments both in and outside the hospital with our teaching. The results showed that: (1) The early season rice cultivation of cyanide, generally per acre can receive more than 1,000 pounds of fresh sedge can solve part of late rice base fertilizer; (2)