东北黑土水稻主产区氮肥减施潜力研究

尹映华, 彭晓宗, 翟丽梅, 张亦涛, 王洪媛, 刘宏斌

Nitrogen fertilizer reduction potential in the main rice producing region of black soil in Northeast China

YIN Yinghua, PENG Xiaozong, ZHAI Limei, ZHANG Yitao, WANG Hongyuan, LIU Hongbin

图5 水稻需氮量和氮盈余的空间分布及现状 注：基于自然资源部标准地图服务网站GS(2019)1827号标准地图制作,底图边界无修改。

Fig. 5 Spatial distribution and status of nitrogen demand and nitrogen surplus of rice