摘要
在甘肃河西走廊的灰棕荒漠土上,进行了人工种植红豆草对灰棕荒漠土改土效应的研究,结果表明：3年生红豆草鲜草产量64.50 t/hm2,折干草22.57 t/hm2,产值为1.47万元/hm2;与CK比较,0～20 cm耕层田间持水量、团聚体、总孔隙度分别增加12.05%、18.33%和15.47%,容重、pH分别降低0.41 g/cm3和0.70,全盐由5.15g/kg降低到2.19g/kg,脱盐率达到57.48%;有机质,速效N、P、K亦随之增加.
In gray-brown desert soil in Hexi Corridor of Gansu,a study was carried out on the effect of planting sainfoin on the improvement of gray-brown desert soil.The results showed that the fresh grass yield of 3-year-old sainfoin was 64.50 t/hm2,equalling hay 22.57 t/hm2,and the output value was 14,700 yuan/hm2;compared with CK,0～20 cm topsoil field capacity,aggregates,total porosity increased by 12.05%,18.33% and 15.47%,while the bulk density and pH decreased by 0.41 g/cm3 and 0.70,respectively;the total salt reduced from 5.15 g/kg to 2.19 g/kg,with a desalination rate of 57.48%;and organic matter and available NPK also increased.
出处
《干旱地区农业研究》
CSCD
北大核心
2011年第3期199-202,共4页
Agricultural Research in the Arid Areas
基金
甘肃省科技支甘项目(2010-006)
关键词
灰棕荒漠土
红豆草
改土培肥
经济效益
gray-brown desert soil
sainfoin
soil improvement
economic benefits
