由湖南省土壤肥料研究所研制的以天然、半天然高分子材料为主作包膜的可降解膜水稻控释肥料 ,近日通过了湖南省科技厅组织的鉴定。采用这一成果 ,可人工控制肥料养分释放速率 ,氮的利用率平均达 77% ,比尿素平均高 39个百分点 ,早、晚稻产量比施用等氮量尿素平均增加 9 3%。专 Developed by the Hunan Institute of Soil and Fertilizer developed by the natural, semi-natural polymer-coated film degradable film rice controlled release fertilizer, recently passed the identification of Hunan Provincial Science and Technology Agency. According to this result, the manure release rate of manure can be artificially controlled. The utilization rate of nitrogen reaches an average of 77%, an average of 39% higher than that of urea. The yield of early and late rice is increased by 93% on average. Specialized