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基于"3414"试验的川中丘陵区水稻测土配方施肥指标体系构建
引用本文:戢林,张锡洲,李廷轩.基于"3414"试验的川中丘陵区水稻测土配方施肥指标体系构建[J].中国农业科学,2011,44(1):84-92.
作者姓名:戢林  张锡洲  李廷轩
作者单位:(四川农业大学资源环境学院)
基金项目:国家自然科学基金(40901138); 四川省青年基金(06ZQ026-020); 四川省教育厅重点项目(07ZA059);四川省教育厅青年基金项目(07ZB063)
摘    要:目的]旨在建立土壤养分分级指标和不同分级范围推荐施肥量,为川中丘陵区合理施用化肥、减少资源浪费和提高经济效益提供参考依据.方法]采用养分丰缺指标法,对川中丘陵区2006年水稻"3414"试验数据进行整理与统计分析,以相对产量75%,80%、85%、90%和95%划分土壤养分分级指标,并分别以三元二次、一元二次和线性...

关 键 词:"3414"试验  养分分级指标  相对产量  推荐施肥
收稿时间:2009-12-28;

Establishing Fertilization Recommendation Index of Paddy Soil Based on the "3414" Field Experiments in the Middle of Sichuan Hilly Regions
JI Lin,ZHANG Xi-zhou,LI Ting-xuan.Establishing Fertilization Recommendation Index of Paddy Soil Based on the "3414" Field Experiments in the Middle of Sichuan Hilly Regions[J].Scientia Agricultura Sinica,2011,44(1):84-92.
Authors:JI Lin  ZHANG Xi-zhou  LI Ting-xuan
Affiliation:JI Lin,ZHANG Xi-zhou,LI Ting-xuan(College of Resource and Environmental Science,Sichuan Agricultural University,Ya'an 65014,Sichuan)
Abstract:【Objective】 In order to provide reference for rational application of fertilizer, decreasing resource waste and increasing economic benefit to paddy soil in the middle of Sichuan hilly regions, gradation index system of soil nutrition and fertilization recommendation index were established. 【Method】 Data analysis were based on the “3414” field experiments of paddy soil in 2006. Taking plentiful-lack of soil nutrition as an index, soil available nitrogen (AN), available phosphorus (AP) and available potassium (AK) were classified by relative yield of 75%, 80%, 85%, 90% and 95%. Fertilizer recommended rates were simulated by the models of three-factor, one-factor, liner and platform for each “3414” field experiment. 【Result】 Nitrogen fertilizer rates (N) are 170-220, 140-170, 110-140, 90-110, and 0-90 kg?hm-2 when soil fertilizer is classified by low, lower, medium, higher and the highest (AN<100, 100-140, 140-180, 180-220 and >220 mg?kg-1 ), respectively, phosphorus fertilizer rates (P2O5) are 100-120, 80-100, 60-80, 40-60, 0-40 kg?hm-2 (AP<5, 5-10, 10-20, 20-30 and >30 mg?kg-1), while potassium fertilizer rates (K2O) are 140-170, 120-140, 100-120, 80-100, 0-80 kg?hm-2 (AK<30, 30-50, 50-70, 70-90 and >90 mg?kg-1). 【Conclusion】Compared with the fertilization recommendation rate calculated by original system, the fertilization recommendation rate of this research suggested that nitrogen fertilizer rates must be decreased, but phosphorus and potassium fertilizer rates must be increased, especially of K2O. It objectively reflected the abundance or deficiency of nutrients and the characteristics of fertilizers input in this study area.
Keywords:3414 field experiments  nutrient classification index  relative yield  fertilization recommendation  
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