培肥措施对新垦黄绵土养分及水分利用效率的影响  

Effects of Different Fertilization on Soil Nutrient and Water Use Efficiency in Newly Cultivated Loessal Soil

作　　者：姜小凤[1,2] 郭天文[1,2,3] 郭贤仕[1,2] 柳燕兰[1,2] 张平良[1,2] 董博[1,2] 

机构地区：[1]甘肃省农业科学院旱地农业研究所,甘肃兰州730070 [2]甘肃省旱作区水资源高效利用重点实验室,甘肃兰州730070 [3]甘肃省农业科学院,甘肃兰州730070

出　　处：《甘肃农业科技》2017年第5期20-23,共4页Gansu Agricultural Science and Technology

基　　金：国家科技支撑计划(2012BAD05B003);国家自然科学基金(31460547)资助

摘　　要：以三棱豆为指示作物,在黄土高原中东地区新垦黄绵土上进行了施肥效应试验研究。结果表明,有机肥(羊粪30 000 kg/hm^2)与化肥(N 180 kg/hm^2、P2O5120 kg/hm^2、K_2O 90 kg/hm^2)配施是提高新垦土壤肥力和水分利用效率的重要农艺措施,可使新垦黄绵土(0~10 cm)土层有机质、全氮、全磷分别较不施肥提高55.6%、42.7%、43.9%。The experiment for fertilization effect on indicator crop Lathyrus quinquenervius is carried out on newly cultivated loessal soil in the middle east of loess plateau. The result shows that the application of organic fertilizers（sheep manure 30 000 kg/ hm2） combined with chemical fertilizer （N 180 kg/hm2, P205 120 kg/hrn2, K20 90 kg/hm2） is an importantly agronomic practice for improving soil fertility and water use efficiency in new-cultivated loessal soil so that it can respectively increase more 55.6% soil organic matter content, 42.7% total nitrogen content, 43.9% total phosphorus content than control group in 0-10 cm soil layer of new-cultivated loessal soil.

关 键 词：新垦黄绵土 土壤养分 水分利用效率 土壤培肥 

分 类 号：S153.6[农业科学—土壤学]