在小麦收获后单季稻移栽前40天左右的空档里,播种一季田菁,每亩可产新鲜绿肥20担左右,作为单季晚稻的基础。这种耕作制度既合乎经济原则,又利于用地养地。若将其与三熟制(绿肥双季稻,二早一水等)进行轮作,则不仅能错开农活,缓和季节矛盾,并使用地养地得以统一。特别对地多、劳少、缺肥的水稻区意义更大。麦肥稻的提出已有较长历史,但各地往 Sowing a quarter of Sesbania on about 40 days before transplanting of single-cropped rice after wheat harvest yields about 20 doubles of fresh green manure per acre as the basis for a single-season late rice. This farming system is not only in line with economic principles, but also conducive to land use. If it is rotated with three-cropping system (green manure double cropping rice, second crop watering and so on), it will not only be able to stagger the farm work, ease the seasonal contradictions, and harmonize the land used for cultivation. In particular, more land, labor-less, lack of fat, more meaningful rice area. The introduction of wheat fertilizers has a long history, but all over