Response of Corn Yield to Water Retaining Agents, Inhibitors, and Corn Stalks Addition in Semi-arid Cropland
Kaikuo Wu,
Na Lv,
Wei Bai,
Yue Meng,
Mei Han,
Yan Xue,
Yuchao Song,
Xueshi Xie,
Tingting Wang,
Ping Gong,
Lili Zhang
Affiliations
Kaikuo Wu
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
Na Lv
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; University of Chinese Academy of Sciences, Beijing 100049, China
Wei Bai
Liaoning Key Laboratory of Conservation Tillage in Dry Land, Tillage and Cultivation Research Institute, Liaoning Academy of Agricultural Science, Shenyang 110161, China
Yue Meng
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; University of Chinese Academy of Sciences, Beijing 100049, China
Mei Han
Industrial Transformation and Revitalization Service Center of Fuxin, Fuxin 123000, China
Yan Xue
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; b: University of Chinese Academy of Sciences, Beijing 100049, China
Yuchao Song
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
Xueshi Xie
Stanley Agriculture Group Co. Ltd., Linshu, Shandong, 276700, China
Tingting Wang
Stanley Agriculture Group Co. Ltd., Linshu, Shandong, 276700, China
Ping Gong
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
Lili Zhang
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
Drought, excessive use of nitrogen fertilizer, and decline in soil organic matter threaten corn production. This study investigated the potential of water retaining agents, inhibitors, and corn stalks in enhancing soil physicochemical properties to bolster corn yield in semi-arid farmlands. In our study, polyacrylamide addition increased the content of ammonium nitrogen (NH4+-N) and nitrate nitrogen (NO3--N) in the seedling stage, exchangeable potassium (K) in the mature stage but decreased the content of available phosphorus (P) in the seedling stage. Potassium polyacrylate addition increased the content of NH4+-N and decreased the content of available P in the seedling stage. The addition of inhibitors decreased the content of NH4+-N and available P in the seedling stage, NO3--N and available P in the jointing stage, and NH4+-N in the mature stage, respectively. Corn stalks returning could maintain soil moisture, decrease the content of NH4+-N in the seedling stage and exchangeable K in the mature stage, and increase the content of available P and exchangeable K in the seedling stage. Combined application of inhibitors and corn stalks could increase soil organic carbon (SOC) and ensure corn yield, which was the best fertilization mode in semi-arid cropland.
