我国主要麦区农户施肥评价及减肥潜力分析
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黄倩楠,党海燕,黄婷苗,侯赛宾,王朝辉
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Evaluation of Farmers’ Fertilizer Application and Fertilizer Reduction Potentials in Major Wheat Production Regions of China
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HUANG QianNan,DANG HaiYan,HUANG TingMiao,HOU SaiBin,WANG ZhaoHui
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表1 我国主要麦区降雨量及调研农户麦田0—20 cm土层土壤理化性状
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Table 1 Precipitation and physical and chemical properties of 0-20 cm wheat field soil of the investigated farmers in main wheat production regions of China
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区域
Region | 降雨量 Precipitation (mm) | pH | 有机质
Organic matter (g·kg-1) | 全氮
Total N (g·kg-1) | 硝态氮
Nitrate N (mg·kg-1) | 铵态氮
Ammonium N (mg·kg-1) | 速效磷
Available P
(mg·kg-1) | 速效钾
Available K (mg·kg-1) | 全年
Annual | 生育期
Growing season | | 春麦区SW | 461—577 | 172—202 | 8.3±0.1 | 19.4±1.2 | 1.1±0.1 | 23.6±5.1 | 4.2±0.4 | 34.2±3.4 | 191.4±10.4 | | 旱作区DW | 487—525 | 236—256 | 8.3±0.01 | 12.6±0.2 | 0.8±0.01 | 14.1±1.3 | 2.4±0.1 | 13.7±0.5 | 133.4±2.6 | | 麦玉区WM | 580—614 | 263—287 | 7.9±0.05 | 19.7±0.3 | 1.1±0.02 | 25.6±1.6 | 4.6±0.3 | 31.3±1.2 | 171.9±4.6 | | 稻麦区RW | 1124—1164 | 431—463 | 7.0±0.1 | 23.8±0.8 | 1.3±0.04 | 12.9±1.6 | 7.7±0.7 | 22.6±1.3 | 130.5±4.9 | | 全国ALL | 718—764 | 290—308 | 8.0±0.02 | 17.5±0.3 | 1.0±0.01 | 19.1±0.9 | 4.2±0.2 | 23.3±0.7 | 151.7±2.4 |
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