心土混层耕改造白浆土效果研究  

THE EFFECT OF TRANSFORMING PLANOSOL BY USING SUBSOIL MIXED PLOUGH

作　　者：赵德林[1] 刘峰[1] 贾会彬[1] 洪福玉[1] 

机构地区：[1]黑龙江省农业科学院合江农业科学研究所

出　　处：《中国农业科学》1994年第4期37-44,T001,共9页Scientia Agricultura Sinica

基　　金：国家科技攻关项目

摘　　要：经过７年系列试验和两年心土混层耕改良白浆土效果试验证明：设计心土混层耕犁的理论依据是保持耕层，改造白浆层。淀积层与白浆层按１：１或０．５：１混拌，应用心土混层耕犁的农艺参数为上翻２０ｃｍ，下混３０─４０ｃｍ。心土混层耕具有持续改土增产效果，粮豆作物第一年增产１５．６％，第二年增产１１．４％；心土层土壤硬度降低，抗穿透阻力从２５ｋｇ／ｃｍ２降到５─１０ｋｇ／ｃｍ２、土壤饱和透水系数提高１．７─７．３倍，土壤抗旱涝能力提高。心土混层耕改土经济效益显著，改土效益期内（两年）每台犁可获纯收益１８．７万元。The pot culture and the plot experiment tested for seven years and the experiment transformed Planosol by using subsoil mixed plongh for two years pointed out :The purpose of the machine designed was to keep ploughed layer and improve Aw horizon.The proportion of mixing B horizon and Aw horizon was 1:1 and 0.5:1 . The agronomic parameter was to plough upper layer for 20cm and mix low layer for 30-40cm. After the machine was used, the soil production was increased continuously, the rate of grain and soybean yields was 15.6% in the lst year and 11.4% in the 2nd year.The soil hardness of subsoil layer was reduced from 25kg/cm2 to 5-10kg/cm2; The water permeability of the subsoil was increased 1.7-7.3 times; the water storage capacity of the soil was increased, which meant that the soil could be able to resist drought and waterlogging effectively. The economic benefit of improving planosol by using the subsoiler was efficient and 187 thousand yuan(RENMINBI) per subsoiler could be earned in two years.

关 键 词：白浆土 心土混层耕 混拌 土壤改良 

分 类 号：S156.99[农业科学—土壤学]