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采用盆栽与田间试验相结合的方法（试验共设６个处理：即石膏用量０、０．５、１．０、１．５、２．０、２．５ｋｇ／ｍ２）研究了石膏的改良盐碱土作用．结果表明：施用石膏后增加了玉米的保苗数，促进了水稻分蘖及玉米、水稻的生长发育，土壤ｐＨ明显降低，水旱田土壤硬度明显降低，旱田玉米土壤三相比普遍改善，根系干重明显增加，土壤中的二价离子增多，一价离子减少，ＥＳＰ普遍降低，土壤化学性质明显改善．秋收测产表明：玉米单产增加１２．５８～４４．３１％，水稻单产增加６．８３～２９．８６％．
Potted and field experiments using a combination of methods (test a total of six treatments: the gypsum dosage 0,0.5,1.0,1.5,2.0,2.5kg / m2) studied the modified gypsum salt Alkaline earth effect. The results showed that gypsum increased seedling number of maize, promoted tiller growth of rice and growth of maize and rice, soil pH decreased significantly, hardness of soil and water in dry land decreased obviously, soil three-phase of maize field improved generally and root dry weight was obvious Increase, the divalent ion in the soil increases, the monovalent ions decrease, the ESP generally decreases, and the chemical properties of the soil are obviously improved. Autumn harvest shows that: corn yield increased 12.58 ~ 44.31%, rice yield increased 6.83 ~ 29.86%.