鄂中丘陵黄土地区,东起黄陂,西止当阳,稻田面积1300余万亩,约占全省稻田总面积的45％左右,是我省主要的水稻产区之一,也是重要的商品粮基地。但是,这个地区的大部分地方由于地多劳少,耕作比较粗放,施肥不足,水稻单产不高,因而发展绿肥、增施肥料是当地提高粮食作物产量的关键措施之一。为此,我们于1964年3月下 Hilly loess area in Hubei Province, east Huang Huang, West only Dangyang, paddy field area of ​​more than 1300 mu, accounting for about 45% of the total area of ​​the province’s rice fields, is one of the province’s major rice producing areas, is also an important commodity grain base . However, in most parts of the region, the development of green manure and the application of fertilizers are one of the key measures to improve the output of food crops in the region due to more labor and less labor, extensive cultivation, insufficient fertilization and poor rice yield. To this end, we March 1964