冷浸田水稻施用不同磷肥品种试验

Application of different P fertilizers to rice in cold-waterlogged paddy field

研究冷浸田施用不同磷肥品种对水稻生长及土壤有效磷含量的影响,结果表明：施用不同磷肥品种水稻产量增幅6.0%~13.1%,差异均达到极显著水平,其中以施用钙镁磷肥增产效果最为明显;施用磷肥的处理均不同程度提高稻田土壤有效磷含量,但降低水稻籽粒全磷含量;冷浸田选用钙镁磷肥对水稻增产效果最好。

Effects of different P fertilizer application on rice growth and soil available P content in cold-waterlogged paddy field were studied. The results showed that the increase of rice yield was 6. 0%- 13. 1% by applying different P fertilizers with very significant difference,which the most obvious efficacy occurred when applying fused calcium-magnesium phosphate; content of available P in paddy soil increased to some degree when fertilizing different kinds of P,but the total P content in the grains decreased. Therefore,fused calcium-magnesium phosphate was the best for increasing rice yield in coldwaterlogged paddy field.