我国主要粮食作物秸秆还田养分资源量及其对小麦化肥减施的启示

李廷亮,王宇峰,王嘉豪,栗丽,谢钧宇,李丽娜,黄晓磊,谢英荷

Nutrient Resource Quantity from Main Grain Crop Straw Incorporation and Its Enlightenment on Chemical Fertilizer Reduction in Wheat Production in China

LI TingLiang,WANG YuFeng,WANG JiaHao,LI Li,XIE JunYu,LI LiNa,HUANG XiaoLei,XIE YingHe

表7 我国不同小麦种植制度下秸秆替代化肥养分量

Table 7 Nutrients substitution quantities through straw-returning under different wheat cropping systems in China (kg·hm-2)

小麦种植制度 Wheat cropping systems 前茬作物秸秆量 Straw quantities from previous crop 秸秆还田养分替代量 Nutrients substitution quantities through straw-returning N P2O5 K2O 一年一作小麦（北方旱作麦区） Wheat monoculture (Dryland wheat production region in north China ) 4448.3 14.6 7.8 63.5 小麦玉米轮作 Wheat-maize rotation 7482.2 39.4 28.9 109.9 稻麦轮作 Rice-wheat rotation 6971.0 29.9 17.8 145.1