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6 辽宁稻区、吉林稻区和黑龙江稻区氮肥偏生产力现状

Fig. 6 Nitrogen partial productivity in rice production regions of Liaoning, Jilin and Heilongjiang