坝上高寒半干旱区栗钙土有机无机培肥作用机理与培肥途径研究

Study on Measures and Channels and Mechanism of Improving Soil Fertility in Chestnut Soil in the Cold and Semi-arid Region of Bashang Plateau

本文主要简述了冀西北坝上高寒半干旱区施用有机无机肥料对旱地栗钙土莜麦的增产效果、基础肥力物质、有机无机复合状况、腐殖质结合形态、土壤酶活性状况以及团聚水平、团聚度等土壤理化性质的影响，进而阐明了旱地栗钙上的培肥作用机理．明确了该区有机无机配施是旱地栗钙土快速培肥增产的最有效途径；而豆（蚕豆、豌豆）麦（莜麦、春小麦）轮作倒茬、油草混播（油菜＋苜蓿、麦茬（＜１５ｃｍ低茬）还田，翻压绿肥等培肥技术措施也是坝上旱地栗钙土培肥地力的有效途径。

This paper mainly dealt with the effect of manures and chemical fertilizers on the yield of naked oat and the physical and chemical properties of soil,such as basic fertility matter,status of organo-mineral complexing,combining form of humus,soil enzyme activities and degree of aggregation etc.,in the cold and semi-arid region of Bashang plateau of northwest Hebei,China.The mechanism of improving soil fertility was expounded.It is showed clearly that using manures and chemical fertilizers was the most effective measures and channels,then followed some olhers,such as rotation of leguminous cops (broad beaus,peas)and wheat(naked oats,spring wheats),mixed sowing rapes and lucernes, ploughing the wheat stubble into the field etc.