白浆型水稻土硅肥的增产效应

在本试验条件下 ,硅肥的增产效应与硅肥的种类有密切关系。硅肥不同施用量的增产幅度为 4 0 %～ 11.1%。最高产量施用量为 4 95kg/hm2 ,每公斤硅肥可增加水稻产量 1 6 9kg。硅肥的最佳经济施用量为 4 0 2kg/hm2 ,投入产出比为 1∶3 2。在氮肥基础上 ,硅磷钾肥配合施用的互作效应最高。施用硅肥可降低水稻倒伏率 ,提高水稻对纹枯病和稻瘟病的抗性

The Silicon Fertilizer Efficiency to Increasing Yields on Soil of White Serosity Rice

According to this experimentation,silicon fertilizer's efficiency to increasing yields is close related with sorts of Si_fertilizer.The increasing yields distance about applying Si_fertilizer different quantity is 4.0%～11.1%.Applying Si_fertilizer for the most yield is 495 kg/hm 2 and one kilogram Si_fertilizer can increase 1.69 kg of rice's yield.Optimum applying Si_fertilizer quantity is 402 kg/hm 2,the ratio is 1∶3.2 between input and output.The interactions efficiency is the highest to cooperating Si_fertilizer,P_fertilizer with potassium fertilizer on the basis of N_fertilizer.Applying Si_fertilizer can reduce the rate of the rice topple and can increase capacity of the rice resist ance to rice blast and rice sheath blight.