黄土丘陵沟壑区旱地肥料效应与养分循环平衡特征  

Fertilization Effect and Nutrient Cycle Balance Feature of Dryland in Loess Hilly Gully Region

作　　者：郑剑英[1] 赵更生[1] 吴瑞俊 

机构地区：[1]中国科学院水利部水土保持研究所

出　　处：《水土保持研究》1996年第2期7-12,共6页Research of Soil and Water Conservation

摘　　要：根据多年的研究结果，黄土丘陵沟壑区是Ｎ、Ｐ化肥的高效区，在各种土地类型上，均以配合施用效果高而稳定，养分平衡结果表明，ＮＰ配合施用Ｎ素亏损，川地磷素营养得到改善，有机无机配合施用，土壤肥力全面提高。坡耕地由于水土流失的影响，土壤磷库除有机肥与ＮＰ配施外，均处亏损状态。由此得出，本区必须合理利用土地，建设基本农田，实施有机无机配合施用，达到高产，优质高效及培肥土壤．Accordiny to mang years experiment,this region has a high use effect of N and P which mixed each other to gain a high and stable pruduction. Nutrient cycle shows N is short as N mixed with P and soil P in the plain is improved. Soil fertilitv is improved completely as organic matter mixed with chemical fertilizer, except organic matter mixed with N and P, is short for soil and water loess in slopeland. So we should use soil land rationaly, construct basic farmland, carry out the apply organic matter mixed with chemical fertilizer in order to reach high yield,high quality,high effects and improving soil.

关 键 词：土地类型 旱地肥料效应 养分循环与平衡 

分 类 号：S158.3[农业科学—土壤学] S157.41[农业科学—农业基础科学]