宁夏引黄灌区(以下简称灌区)绿肥的栽培利用历史较久,但大面积发展,还在解放以后,如1964年的绿肥面积为1952年的6倍多。在栽种绿肥面积较多的县份,不仅基本上解决了稻田的肥料问题,还提供了部分牲畜的饲草,有力地促进了农牧业的发展。 Ningxia Yellow River Irrigation Area (hereinafter referred to as irrigated area) green manure has a long history of cultivation and utilization, but large-scale development, but also after the liberation, such as the 1964 green manure area in 1952 more than 6 times. In the counties with more green manures, not only the problem of fertilizer in the rice fields was basically solved, but also the forage of some animals was provided, which effectively promoted the development of agriculture and animal husbandry.