长江中下游冬油菜产区有机无机肥配施下减氮增效潜力分析

蒋倩红,陆志峰,赵海燕,郭俊杰,刘文波,凌宁,郭世伟

Potential Analysis of Reducing Chemical Nitrogen Inputs While Increasing Efficiency by Organic-Inorganic Fertilization in Winter Rapeseed Producing Areas of the Middle and Lower Reaches of the Yangtze River

JIANG QianHong,LU ZhiFeng,ZHAO HaiYan,GUO JunJie,LIU WenBo,LING Ning,GUO ShiWei

表1 试验点土壤基础理化和气候特征

Table 1 Soil physical and chemical properties and climate features of experiment sites

地点 Site 生长季积温 Accumulated temperature in growing period (℃) 生长季降水量 Precipitation in growing period (mm) pH 有机质 Soil organic matter (g·kg-1) 全氮 Total nitrogen (g·kg-1) 速效磷 Soil available phosphorus (mg·kg-1) 速效钾 Soil available potassium (mg·kg-1) 土壤质地 Soil texture 高淳Gaochun 31°19′10″ N, 119°07′54″ E 2420 636 5.6 11.6 0.3 8.4 119.5 黏土Clay 安仁 Anren 26°46′52″ N, 113°10′27″ E 2159 968 5.1 29.8 1.5 27.3 50.2 壤土 Loam 沙洋 Shayang 30°43′60″ N, 112°18′24″ E 2211 368 5.3 20.2 1.5 22.6 160.3 壤土Loam 休宁 Xiuning 29°37′23″ N, 118°11′59″ E 2198 1079 5.5 36.5 2.2 48.7 106.1 黏土Clay 当涂Dangtu 31°20′42″ N, 118°35′15″ E 2284 644 7.0 42.1 2.0 28.2 97.4 砂土 Sandy