Gypsum application in amelioration of soda-alkaline soil.Ⅰ. Determination of economical application amount.
JIN Liang1**, WU Li-geng2, WEI Dan1, HU Ke-lin3, ZHAO Li-bing4, WEI Lu-yu5
(1Heilongjiang Academy of Soil Fertilizer and Environment Resources Institute, Heilongjiang Key laboratory of Soil Environment and Plant Nutrition, Heilongjiang Fertilizer Engineering Technology Research Centre, Harbin 150086, China; 2College of EcoEnvironment, Inner Mongolia Agricultural University, Hohhot 010019, China; 3Resources and Environment Institute of China Agricultural University, Beijing 100086, China; 4 Shuangyashan Agriculture Committee, Shuangyashan 155100, Heilongjiang, China; 565426 Force Agricultural and Sideline Basement, Dongshan District, Hegang city, Hegang 154107, Heilongjiang, China)