冷浆型水稻土施用沸石对水稻生育及产量的影响

本文对冷浆型水稻土施用沸石作了初步研究，并同施用石灰的改良效果进行了比较。结果表明，沸石同石灰一样对于冷浆型水稻土的水稻有较好的增产作用。对于ｐＨ５．５以上的冷浆型水稻土，沸石的增产效果明显好于石灰，而对于ｐＨ５．５以下的水稻土。增产效果不如石灰；施用沸石稻的生产和产量性状有明显的改善作用，并使水稻的抗性增强，产量显著提高；沸石施于冷浆型水稻土有明显的后效。

The Effect Natural Zeolite on Growth and Yield of Rice in Cold Rice Soil

This paper studied the effects of natural zeolite in the improvement cold rice soil. The resultes showed that (1) As natural lime, natural zeolite had a good effect on improving the soil. In the rice soil with pH larger than 5.5, natural zeolite was better than lime, and in the rice soil with pH below 5.5, zeolite was not as good as lime.(2) The zeolite could improve the agronomic trait, resistance to diseases and the grain yield of rice. (3) There was a significant residual effect on the old rice soil after zeolite application.