混播草地地上生物量与土壤主要养分变化的关系研究  

Study on the Relationship between Ground Biomass and Soil Nutrient in the Mixed Grassland

作　　者：张仁平 于磊[2] 鲁为华[2] 蒋慧[3] 

机构地区：[1]新疆维吾尔自治区草原总站,乌鲁木齐830049 [2]石河子大学动物科技学院,新疆石河子832003 [3]塔里木大学动物科技学院,新疆阿拉尔843300

出　　处：《新疆农业科学》2009年第3期592-596,共5页Xinjiang Agricultural Sciences

基　　金：新疆兵团绿洲生态农业重点实验室项目(5003-841001);国家"973"前期预研项目"新疆弃耕地生态重建模式"(5003-922523)

摘　　要：试验研究结果表明:有机质与地上生物量呈极显著正相关,地上生物量越高,形成的有机质越多。在单播的紫花苜蓿中,紫花苜蓿的地上生物量与速效K呈负相关,说明生成的地上生物量越多,消耗的速效K越多。单播无芒雀麦的地上生物量与碱解N、速效P和速效K都呈负相关。在紫花苜蓿和无芒雀麦混播草地中,速效P和速效K肥的消耗最大。The present study was to discuss the relationship between above - ground biomass and the main nutrient factors in the soil. The results show that organic matter has positive influence on the ground biomass, and the higher the ground biomass, the more organic matter form. In the single planting alfalfa, ground biomass of alfalfa has negative influence on available K, which means that the higher the ground biomass, the more available K consumed. Hay yield of Smooth bromegrass has negative influence on available N, available P and available K. Fertilizer consumption of available P and available K are the largest in the mixed grass of alfalfa and Bromus inermis.

关 键 词：混播 地上生物量 土壤养分 绿洲区 

分 类 号：S812.2[农业科学—草业科学]