硅肥对水稻养分吸收及产量的影响

A Study of Silicon Fertilizer on Nutrient Uptake and Yield in Rice

摘要:

硅肥明显降低水稻无效分蘖和增加穗粒数,对其他产量构成因素均有不同作用。施硅肥可提高子实N、K和秸秆P、Si含量,还明显提高子实N、P、K和秸秆P、Si的吸收量。在冲积型和白浆型水稻土上,每公顷施硅肥750～900 kg,增产效果显著或极显著,达8.4%～18.6%,产投比为1:3.38～9.23,获纯收入429～1482元。

Abstract:

Silicon fertilizer Significantly decreased ineffective tillers, increased number of grains per panicle and affected on other Constitute factors of yield.Applied Si increased N, K Content in the grain and P, Si Content in the straw, and Significantly in creased N, P, K uptake in the grain and P, Si uptake in the straw.Applied Si fertilizer 750～900 kg/hm² Significant increased yield by 8.4%～18.6%.The ratio of input to output was 1:3.38～9.23, the net income by Si upplication was 429～1482 yuan/hm² in alluviation type paddy soil and baijang type paddy soil.