连续施肥对青海水地蚕豆产量、水稳性团聚体和土壤有机碳含量的影响  

Effects of Continual Fertilization on Broad Bean Yield,Water-Stable Aggregates and Soil Total Organic Carbon Contents in Irrigated Farmlands,Qinghai Province

作　　者：徐仁海[1] 

机构地区：[1]青海省农林科学院作物育种研究所,青海西宁810016

出　　处：《安徽农业科学》2011年第34期21018-21020,共3页Journal of Anhui Agricultural Sciences

摘　　要：[目的]研究了7种施肥处理对青海水地蚕豆产量、水稳性团聚体和土壤有机碳含量的影响。[方法]在青海西宁市城北区,采用连续3年的小区定位试验开展研究。[结果]与对照相比,施肥可提高水地蚕豆产量4.80%～37.19%,其中有机肥-无机肥配施对蚕豆有显著的增产效果;施肥对提高土壤中>0.25 mm水稳性团聚体含量有显著作用,可较对照增加1.5～3.3倍,有机肥-无机肥连续配施有利于形成良好的土壤团粒,改善土壤结构;与对照相比,连续施肥可提高土壤轻组有机碳(LFOC)含量14.19%～202.53%,土壤总有机碳含量可增加10.92%～38.0%。[结论]有机肥-无机肥配施处理相对于其他施肥处理,各指标均有明显提升,有利于土壤肥力的增加和恢复。[Objective] The research aimed to study the effects of different factorial fertilizer on broad bean yield,water-stable aggregates and soil total organic carbon contents in irrigated farmland of Qinghai Province.[Method] The field plot experiments were carried out for three years in Northern district,Xining,Qinghai Province.[Result]The fertilizer treatments and check treatment had difference significantly on bean yield,and the rate ranged from 4.8% to 37.19%.Especially,the bean yield of organic and inorganic fertilizer treatment was the highest.The fertilizer treatments were helpful to improve the rate of 0.25 mm water-stable aggregates in some extents、 Iit could increase 1.5 to 3.3 times than that of check treatment、 So the fertilization with organic and inorganic fertilizer together could increase soil aggregates and soil construction.To compare with the check treatment,the rate of soil light fraction organic carbon ranged from 14.19% to 202.53%,and the rate of soil total organic carbon varied from 10.92% to 38.0% under continual fertilization for three years.[Conclusion] Fertilization with organic and inorganic fertilizer together was useful for the soil fertility recovering and increasing.

关 键 词：连续施肥 蚕豆 水稳性团聚体 土壤有机碳 

分 类 号：S147.2[农业科学—肥料学]