作　　者： ; ;

机构地区： 广东省农业科学院

出　　处： 《土壤与环境》 2002年第4期373-375,共3页

摘　　要： 探讨了营养型土壤改良剂（简称改良剂）对水稻产量、土壤酸度、土壤养分、土壤肥力和土壤物理性能的效应。连续2年4造水稻试验结果表明，施用改良剂比对照稻谷产量增加8.6%-11.3%(平均10.3%），增产达极显著水平，并且有良好后效。施用土壤改良剂具有提高Ph，降低活性Al，增加N、P、K有效养分和代换性K、Ca和Mg的效果。 s: 4 crops of experiments of the nutritive soil amendments (NSA) applied on rice for 2 years indicated that the grain yield were increased by the scopes of 8.6%~11.3%(averaged by 10.3%), compared with no NSA treatment, come up to the extremely significant levels. and the NSA treatment showed good residuat effect, with the yield increased by 12.6% compared with the no NSA. The probation on the effects of the NSA applied on soil acidity, soil nutrition, soil fertility and soil physical properties indicated that the application of the NSA could increase pH, the available nutrition of NPK and exchangeable content of K+, Ca2+and Mg2+, and decrease active content of Al3+.

关 键 词： 施用 营养型土壤改良剂 水稻 产量 土壤肥力

领　　域： [农业科学] [农业科学] [农业科学]