CAJ | 학술논문

采用拉丁方田间试验设计,测定脱硫石膏在不同施用量条件下对盐碱地的改良效果.结果表明:施用脱硫石膏显著提高了土壤有机质和养分含量,一定程度上降低了土壤碱化度、pH 值和全盐含量,提高了葵花出苗率、千粒重和产量.根据脱硫石膏施用量与葵花出苗率、产量的模拟曲线关系,测得利用脱硫石膏改良盐碱化土壤的最佳施用量为28.0 t/hm2左右.
채용랍정방전간시험설계,측정탈류석고재불동시용량조건하대염감지적개량효과.결과표명:시용탈류석고현저제고료토양유궤질화양분함량,일정정도상강저료토양감화도、pH 치화전염함량,제고료규화출묘솔、천립중화산량.근거탈류석고시용량여규화출묘솔、산량적모의곡선관계,측득이용탈류석고개량염감화토양적최가시용량위28.0 t/hm2좌우.
In order to study the effects of amelioration of typical saline -alkali soil in Baicheng City by different application rates of desulfurized gypsum ,latin square design is used in field experimental plots .Results show that under the condition of applying desulfurizs gypsum into saline -alkali soil,the values of content of soil organic matter,soil nutrient,the rate of seedling emergence ,1 000-grain weight and yield of sunflower are dramatically increased and those of ESP (exchangeable sodium percentages ),pH,salt concentration of saline-alkali soil are obviously decreased.According to the analog curve for the correlations between the amount of desulfurized gyp -sum applied and the rate of seedling emergence ,1 000-grain weight and yield of sunflower ,it shows that the opti-mum application rate of desulfurized gypsum to ameliorate saline -alkali soil is 28.0 t/hm