油菜壳还田对水稻产量及土壤肥力的影响

Influence of Oil Rape Shell Return to Field on Rice Yield and Soil Fertility

通过油菜壳还田 3年定位监测试验及大面积示范 ,结果表明 ,在旋耕土壤前 ,撒施还田1 875～ 3 75 0kg/hm2 油菜壳 ,能使土壤物理性状得到改善 ,土壤养分积累 ,水稻平均增产率为5 .5 %～ 6.8% ,油菜为 3 .6%～ 5 .4%。

Through soil monitor for 3 years and demonstration check of big sige about oil rape shell retuning to field, before the arable land retuning the oil rape shell about 1875～3750kg/hm 2 to field brings the reform and increase of the physical characteristic and the nutrients in soil,the yield of rice increasing by 5.5%～6.8%,the yield of oil rape increasing by 3.6%～5.4%. The way of oil rape shell (1875kg) from per hectare retuning to field of per hectare sige is simple during the extension, oil rape shell retuning to field every year.The effect of inproving fertility of soil will be remarkable.