红花草是豆科植物,它不但本身是丰富的有机质肥料,而且根部生有很多根瘤菌,能固定空气中的氮,增加土壤中氮素肥料,改良土壤,培养地力,利于作物的生长和发育:所以扩大种植面积,是解决水稻地区缺乏肥料,保证增产粮食的根本办法。江西省庆丰县部分农民早就有在秋冬作物田中套种红花草的习惯,如洋口区新发、莲波、靠山、河北、湖墩等 Red flowers and grass is a leguminous plant, which not only is rich in organic fertilizer, but also the root of many rhizobia, can fix the nitrogen in the air, increase soil nitrogen fertilizer, soil improvement, soil fertility, conducive to crop growth and development : Therefore, expanding the planting area is the fundamental solution to the problem of the lack of fertilizers in rice areas and the guarantee of increased grain output. Some peasants in Qingfeng County of Jiangxi Province have long had the habit of intercalating flowers and plants in the fields of autumn and winter crops such as Xinfa, Lianbo, Yantai, Hebei and Lake Pier in Yangkou District