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我省以紫云英,满园花为主的冬绿肥,解放后得到了迅速发展,由1949年的420万亩发展到1969年的2359万亩,鲜草平均亩产3000余斤,对全省粮食增产和土壤培肥起过很大作用。但自七十年代以来,面积与单产均逐年缩减,1985年全省仅种植1443.29万亩,平均亩产鲜草1500斤左右,只占1969年的62％和50％,因此,导致土壤有机质含量减少,结构变劣,严重削弱了农业生产后劲。目前我省冬闲田、地约占耕地面积的37％,个别地、县高达70％以上,致使光、热、土地资源造成莫大的浪费。为有效地发展农业生产,继续扩大冬绿肥的播种面积,这是生态农业的重要一环,全省各地要引起足够重视,应把这项工作作为一项战略措施来抓,以促进生产持续发展。
In our province, the winter green manure dominated by Chinese milk vetch and garden flowers has been rapidly developed since the liberation, from 4.2 million mu in 1949 to 23.59 million mu in 1969, and the average grass yield per mu is over 3000 kilos. Provincial grain yield and soil fertility played a significant role. However, since the 1970s, the area and yield have been reduced year by year. In 1985, the province only planted 14.4329 million mu, yielding about 1,500 kg of fresh grass per mu, accounting for only 62% and 50% of that in 1969. As a result, soil organic matter Reduce, structural deterioration, seriously weakened agricultural production stamina. At present, the winter fallow field in our province accounts for about 37% of the cultivated land area, with individual districts and counties as high as over 70%, resulting in a great waste of light, heat and land resources. In order to effectively develop agricultural production and continue to expand sown area of winter green manures, this is an important part of eco-agriculture. All parts of the province should pay enough attention to this work as a strategic measure to promote the sustainable development of production .