稻田养鱼对水稻生长发育的效应试验初报

THE PRIMARY REPORT ABOUT THE EFFECTS OF PISICULTURE IN PADDY FIELD ON THE GROWTH OF RICE

对稻田养鱼(垄稻沟鱼)后的稻田土壤、田水、水稻植株、稻米蛋白质等进行了测定。结果表明:土壤和田水的氮,磷、钾含量均有明显提高,土壤的通透性得到改善;水稻的根系活力增强,分蘖增多,稻株的氮、磷、钾含量,叶片叶绿素含量,叶面积指数和干物质的累积均有明显增加,稻米的蛋白质含量也有所提高;稻田杂草基本根除,同时获得明显的经济效益。

The soil,field water,rice plant and protein in rice grains were analysed and determined after fish cultured in paddy field(rice on the ridge and fish in the furrow).The results indicated that the contents of N,P,K in soil and field water increased remarkably.The aeration and permeability of soil were improved.The activity of rice root system strengthened.Tillering grew in humber.The contents of N,P,K in rice plant,the content of chloro- phyll in leaf,index of leaf area and accumulation of dry matter increased femarkably.The protein of rice grains raised to some extent.Paddy weeds were eradicated on the whole.In addition,economic benefit was obviously good.