塑料大棚耕作模式对抑制农田氮磷流失的作用  

Study on the Inhibiting Effect of Plastic-covered Tunnel in the Soil Nitrogen and Phosphorus Loss

作　　者：严珊[1] 刘贯一[1] 

机构地区：[1]河北联合大学建筑工程学院,河北唐山063009

出　　处：《河北联合大学学报（自然科学版）》2013年第2期113-116,共4页Journal of Hebei Polytechnic University:Social Science Edition

摘　　要：根据农田氮、磷流失的途径,通过测试土壤中的全氮和有效磷的含量研究塑料大棚的耕作方式是否能够有效抑制农田氮磷的流失。经测定,下雨前后棚内TN由1.207 g/kg变化到1.209 g/kg,P-由70.9 mg/kg变化到70.84 mg/kg;而下雨前后棚外TN由1.194 g/kg变化到1.102 g/kg,P-由69.63 mg/kg变化到66.29 mg/kg,相比之下棚外土样的氮磷含量雨后有更明显的减少,证明塑料大棚对抑制农田氮磷的流失是有一定作用的。还指出了此种耕作模式在控制水体富营养化中存在的发展前景。In this paper, according tothe way of soil nitrogen and phosphorus loss, through the test of the soil total nitrogen and available phosphorus discuss whether plastic-covered tunnel can effectively restrain the soil nitrogen and phosphorus loss. Through measuring, after rain TN in greenhouse from 1. 207 g/kg changes to 1. 209 g/kg, in greenhouse from 70.9 mg/kg changes to 70.84 mg/kg;And after rain TN off greenhouse from 1. 194 g/kg changes to 1. 102 g/kg,/3 off greenhouse from 69.63 mg/kg changes to 66.29 mg/kg, In contrast , there is more obvious content reduce of soil nitrogen and phosphorus off greenhouse after rain,which have proved plastic-covered tunnel can effectively restrain the soil nitrogen and phosphorus loss. The paper also points out the development prospect of this farming practices in water eutrophication controlling.

关 键 词：塑料大棚 全氮 有效磷 水体富营养化 

分 类 号：S36[农业科学—作物栽培与耕作技术]