Effect of straw application to soil nitrate leaching of paddy-upland rotation in the Yellow River irrigation area von YANG Shiqi, 杨世琦, HAN Ruiyun, 韩瑞芸, WANG Yongsheng, 王永生, LIU Ruliang, 刘汝亮, XIE Xiaojun, 谢晓军, YANG Zhengli, 杨正礼

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Freeze-thaw effects on soil nitrogen loss and availability von CHEN Zhe, 陈哲, YANG Shiqi, 杨世琦, ZHANG Qingwen, 张晴雯, ZHOU Huakun, 周华坤, JING Xin, 井新, ZHANG Aiping, 张爱平, HAN Ruiyun, 韩瑞芸, YANG Zhengli, 杨正礼

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Effect of nitrate leaching of winter wheat based on straw application in the Yellow River irrigation area of Ningxia von YANG Shiqi, 杨世琦, WANG Yongsheng, 王永生, HAN Ruiyun, 韩瑞芸, XIE Xiaojun, 谢晓军, YANG Zhengli, 杨正礼

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