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我省有耕地面积五千七百多万亩,低洼易涝地和盐碱地面积二千五百万亩,占总耕地面积的百分之四十三。这些土地大部分盐碱瘠薄,施有机肥不足,加上连年施用化肥,造成土壤理化性质变坏,肥力降低,影响了作物产量的提高。种地与养地相结合,最有效的措施是种植绿肥,针对这个问题,我所开展了适宜低洼易涝和盐碱地的田菁绿肥新品种选育工作,现选育出早熟的辽菁一号和辽菁二号两个新品种。它们的生育期分别为115天和130天,鲜草植株养分含量为:氮
In our province, there are more than 57 million mu of cultivated land, low-lying flood-prone land and saline-alkali land of 25 million mu, accounting for 43% of the total cultivated land. Most of these lands are barren and salty, with insufficient application of organic fertilizers. Coupled with the successive years of application of chemical fertilizers, soil physical and chemical properties are deteriorated and fertility is reduced, which affects the increase of crop yield. In order to solve this problem, the most effective measure is to plant green manure. In order to solve this problem, we carried out the breeding of a new variety of green manure suitable for low-lying waterlogging and saline-alkali land. And Liao Jing two two new varieties. Their growth period was 115 days and 130 days, fresh grass plant nutrient content: nitrogen