南通市人多地少,人均仅0.69亩夏粮和0.62亩秋粮作物。近年来,部分地区为增收夏粮,减少投入,出现了“挤麦挤肥”和“扩麦挤秧”倾向,使间作冬绿肥面积减少50％,绿肥茬秧田也逐步减少,麦茬、油菜茬秧田增加。致使有机肥减少,地力下降,中稻播期推迟,增产潜力受到影响。为改善上述恶性循环、提高稻作综合经济效益,南通市近年来注意开发各种肥菜兼用的经济绿肥,取得了明显效益。 Nantong City, many people less per capita only 0.69 acres of summer grain and 0.62 acres of autumn crops. In recent years, in some areas, in order to increase the amount of summer grain and reduce the input, the tendencies of “squeezing wheat and composting rice” and “expanding wheat and sprouting seedlings” have emerged. As a result, the area of ​​intercropped winter green manure has been reduced by 50% and that of green manure has also been gradually reduced. increase. Resulting in reduced organic fertilizer, decreased soil fertility, delayed sowing of medium-sized rice and increased yield potential affected. In order to improve the above vicious circle and improve the comprehensive economic benefits of rice cultivation, Nantong City has paid attention to the development of various economic green manures that combine both fertilizer and food in recent years and has achieved obvious benefits.