植物营养与肥料学报2012，Vol.18Issue(6)：1293-1302,10.
不同有机物及其堆肥与化肥配施对小麦生长及氮素吸收的影响
Effects of combined application of inorganic fertilizer with straw and pig slurry and their compost on wheat growth and nitrogen uptake
摘要
Abstract
Effects of combined application of inorganic fertilizer with straw, pig slurry, straw compost and pig slurry compost on wheat growth and nitrogen uptake were studied in paddy soils and gray alluvial soils. A pot experiment was carried out in paddy soils and gray alluvial soils in Yixing based on 15N isotope tracer. The results show that compared to the inorganic N fertilization treatments, the combined applications of organic and inorganic fertilizers increase wheat yields by 4.46%-24. 82% and 1.01%-20.53% in paddy soils and gray alluvial soils, respectively. Wheat yields under the combined applications of the straw compost and the pig slurry compost are higher than those of the combined applications of straw and pig slurry, respectively. The combined applications of the straw compost and the pig slurry compost stimulate N uptake and improve N accumulation of wheat. The treatments of the straw compost and the pig slurry compost have the highest ^15N recovery rates, while the ^15N recovery rates of the inorganic N fertilization the treatments are the lowest. Soil microbial biomass nitrogen under the combined application of straw and pig slurry is always higher than that under the combined application of the straw compost and the pig slurry compost during wheat growth season. At the tillering stage, soil mineral nitrogen under the inorganic N fertilization treatment is higher, and it is lower in the later growing stages. During the whole growing period, soil mineral nitrogen amounts under the combined applications of the straw compost and the pigslurry compost are higher than those under the combined applications of straw and slurry. In summary, the combined application of the composts and inorganic fertilizer is more conducive to improving crop yields and plant N uptake.关键词
小麦/有机无机肥配施/^15N回收率/微生物量氮/矿质态氮Key words
wheat/combined application of organic and inorganic fertilizer/^15N recovery rate/microbial biomass nitrogen/mineral nitrogen分类
农业科技引用本文复制引用
郁洁,蒋益,徐春淼,沈其荣,徐阳春..不同有机物及其堆肥与化肥配施对小麦生长及氮素吸收的影响[J].植物营养与肥料学报,2012,18(6):1293-1302,10.基金项目
农业部公益性行业科研专项 （）
国家科技部“973”项目（2007CBl09304）资助. （）
