氮磷钾平衡施肥对谷子产量及土壤肥力的影响  

Influence of balanced N,P,K fertilization on millet yield and soil fertility

作　　者：王晓军[1] 王勇[1] 张晓娟[1] 孙玉琴[1] 程炳文[1] 

机构地区：[1]宁夏农林科学院固原分院,宁夏固原756000

出　　处：《农业科学研究》2015年第2期5-8,26,共5页Journal of Agricultural Sciences

基　　金：国家谷子糜子产业技术体系(CARS-07-12.5-A13)

摘　　要：采用"3414"设计,研究氮磷钾肥对谷子产量、株高及土壤肥力的影响.结果表明:当N2P1K1施肥处理时,试验条件下谷子产量最高,为431.23 kg/667 m2,产量回归方程拟合产量为422.3 kg/667 m2.氮肥为N2(21.53 kg/667 m2)水平时,不同生育时期土壤全氮质量比大小依次为灌浆期、抽穗期、拔节期、成熟期、苗期,不同处理的谷子平均株高大小依次为N2P2K2、N3P2K2、N1P2K2、N0P0K0;磷肥为P2(18.6 kg/667 m2)水平时,不同生育时期土壤全磷质量比大小依次为灌浆期、成熟期、苗期、拔节期、抽穗期,不同处理的谷子平均株高大小依次为N2P2K3、N2P3K2、N2P1K2、N0P0K0;钾肥为K2(4.47 kg/667 m2)水平时,不同生育时期土壤全钾质量比大小依次为抽穗期、拔节期、灌浆期、苗期、成熟期,不同处理的谷子平均株高大小依次为N2P2K2、N2P2K1、N2P2K3、N0P0K0.Through ＂3414＂ designed to study the effect of N,P,K fertilizer on millet yield, high variability and soil fertility, the results showed that： when N2PIKl fertilization treatments, the highest yield of millet under the test conditions, the yield of 431.23 kg/667 m2, fitted regression equation yields production of 422.3 kg/667 m2. When nitrogen N2 （21.53 kg/667 m2） level, the content changes of different soil nitrogen fertility during the period for： Filling stage 〉 Heading stage〉 Jointing stage〉 Maturity stage〉 Seedling stage, millet average height changes N2P2K2〉 N3P2K2〉 N1P2K2 〉 N0P0K0; when phosphate P2 （18.6 kg/667 m2） level, different soil fertility period, total phosphorus absorption content variation is： Filling stage〉 Mature stage〉 Seedling stage 〉Jointing stage〉 Heading stage, millet average height variation for ： N2P2K3〉 N2P3 K2〉N2P,K2〉N0P0K0; when potash K2 （4.47 kg/667 m2） level, a different variation of the content of the soil to absorb the whole growth period for potassium： Heading stage〉Jointing stage〉 Filling stage〉 Seedling stage〉 Maturity stage , millet average height variation is： N2P2K2〉N2P2K1〉 N2P2K3〉N0P0K0.

关 键 词：平衡施肥 谷子 产量 土壤肥力 

分 类 号：S147.2[农业科学—肥料学]