响应曲面法优化硅磷交互作用下的水稻产量

Application of Response Surface Methodology for Optimization of Rice Yield by Treatments of Silicate Fertilizer and Phosphorus Fertilizer

研究了硅肥、磷肥及他们的交互作用对水稻产量的影响。采用盆栽水稻技术,应用响应曲面法分析了施用不同比例的硅肥、磷肥对水稻单位面积穗数、每穗平均籽粒数、结实率和千粒重4个产量构成因素的影响。通过研究发现,磷肥能够显著影响穗均粒数和千粒重,硅肥能够显著影响桶均穗数、穗均粒数和千粒重,硅磷的交互作用亦能显著影响穗均粒数。在研究了硅肥、磷肥对水稻产量构成因素影响的基础上,通过计算获得了水稻产量与硅肥、磷肥施用量的回归模型,根据模型确定出最高产量的生产条件为:磷酸一铵1.68g;硅酸钠5.25g,理论产量为91.74g。经验证实际产量为71.74g,较空白处理提高了53.32%。

Pot experiments of rice were performed to study the effects of applying silicate and phosphorus on rice yield in phaeozem. Response surface methodology was used to analysis the various influences on rice panicle per unit area, average number of spikelets per panicle, rates of filled seeds and grain weight of 1000 spikelets by applying silicate fertilizer, phosphorus fertilizer and the interactions of them. Through study the author found that phosphate could bring significant impact on spikelets panicle and grain weight, application of silicon could significantly affect ears, spikelets panicle and grain weight, the interactions of both silicon and phosphorus could significantly affect spikelets panicle. After studied the silicon and phosphorus on rice production constitutes the basis of factors, the yield of rice was obtained by calculating silicon and phosphorus fertilizer application rate of regression model, according to the model to determine the highest production and output conditions were as follows： monoammonium phosphate 1.68 g, sodium silicate 5.25 g, the theoretical product was 91.74 g, however the true product was 71.74 g which was higher 53.32 percent than the output by control treatment.