连续施用土壤改良剂对水稻-四季豆轮作的效果研究

研究连续施用土壤改良剂对水稻、四季豆产量及土壤理化性质的影响。结果表明,在水稻-四季豆轮作过程中,施用土壤改良剂均能明显增加水稻和四季豆的产量,并且能增加水稻子粒的千粒重。水稻季施用土壤改良剂,在四季豆季也有一定的增产,表明适当用量的土壤改良剂有明显后效;连续施用土壤改良剂比单季施用的作物产量更高,土壤pH升高更快,土壤交换性钙、交换性镁得到更快提升。

Research of the Effects of Soil Amendment on Cultivation of Rice-kidney Bean Rotation

The effects of soil amendment to yield of rice and kidney bean, physical and chemical properties of soil were studied in rice-kidney bean rotation system. The results showed that in the rice-kidney bean rotation, compared with the con-trols, the application of soil amendment had increased the yield of rice and kidney bean, and also increased the thousand grain weight of rice. Application of amendment in rice season, it also had a certain amount of yield in rice-kidney season showed that proper dosage of amendment had great after-effect; But compared with application of amendment both in rice and rice-kidney season, continuous application of amendment had a higher yield of crops. Compared with the controls, the application of amendments had increased the soil pH to varying degrees. The application of amendment both in rice and kid-ney bean could increase the soil pH, exchangeable calcium content and exchangeable magnesium content larger than the sin-gle season.