中国生态农业学报2011，Vol.19Issue(2)：258-264,7.DOI:10.3724/SP.J.1011.2011.00258
钾硅钙微孔矿物肥对褐潮土水稻生长及土壤性状的影响
Effect of micropore potassium-silicon-calcium (PSC) mineral fertilizer on rice growth and the characteristics of brown-humid soils
摘要
Abstract
Pot experiments were carried out to study of effects of micropore potassium-silicon-calcium (PSC) mineral fertilizer (a national invention patented product) on rice growth, yield and soil physical and chemical characteristics in brown-humid soils.Five treatments were designed, i.e.zero fertilization (T1), conventional fertilization (T2), conventional fertilization plus micropore PSC mineral fertilizer at 4 g · pot-1 (T3), conventional fertilization plus micropore PSC mineral fertilizer at 8 g · pot-1 (T4), and conventional fertilization plus micropore PSC mineral fertilizer at 12 g · pot-1 (T5).Compared with T2, results showed that the application of micropore PSC mineral fertilizer reduced soil bulk density by 0.04 g · cm-3.It also increased soil porosity, pH and contents of soil available silicon and potassium by 1.8％, 0.1, 9.4～27.0 mg · kg-1 and 10.6～39.7 mg · kg-1, respectively.Compared with T2, micropore PSC mineral fertilizer increased not only leaf chlorophyll content, but also rice flag leaf area by 4.8 cm2.It also increased effective panicle numbers by 2.3～5.0 spike · pot-1, 1000-grain weight by 0.1~1.9 g and average yield by 13.6％.Recovery rates of N, P, K increased by 0.6％～7.5％, 0.1％ ～1.5％ and 8.5％～13.5％, respectively.Based on rice yield, the optimal recommended economic application rate of micropore PSC mineral fertilizer was 4 g · pot-1 equivalent to 450 kg · hm-2 in brown-humid soils.关键词
钾硅钙微孔矿物肥/褐潮土/水稻/生长效应/土壤理化性状/产量Key words
Microproed potassium-silicon-calcium mineral fertilizer/ Brown-humid soil/ Rice/ Growth response/ Soilphysical and chemical characteristics/ Yield分类
农业科技引用本文复制引用
齐鑫,韩成,盛学斌,刘建明..钾硅钙微孔矿物肥对褐潮土水稻生长及土壤性状的影响[J].中国生态农业学报,2011,19(2):258-264,7.基金项目
国家科技支撑计划项目(2006BAD10B04)、中国科学院知识创新工程重要方向项目(KSCX2-YW-N-51-06)和国家星火计划重点项目(2007EA173003)资助 （2006BAD10B04）
