鄂东南双季稻区硅肥在早稻上的施用效果研究

Silicon Fertilizer Application Effect on Early Rice in Double Rice Cropping Regions of Southeast Hubei

通过多点田间试验,研究了鄂东南双季稻区施用硅肥对早稻生长、产量、抗折力及养分积累量的影响。结果表明,施硅能促进水稻地上部生长,显著提高稻谷产量。与NPK处理相比,施硅处理早稻的生物量增加4.1%;稻谷产量增加6.2%;影响产量的主要因素为有效穗数和每穗粒数,与NPK处理相比,NPK+Si处理早稻有效穗数和每穗粒数分别增加12.1%和19.2%。施硅显著提高早稻茎部抗折力,与NPK处理相比,抗折力增加16.3%。施硅处理早稻N、P和K积累量分别显著增加15.7%、10.1%和15.5%。可见,硅肥在鄂东南早稻上施用效果显著。

Field trials were conducted to study the effect of Silicon(Si) fertilizer application on the growth,yield and nutrient accumulation of early rice.Results showed that the application of Si fertilizer promoted the growth and increased the grain yield of rice significantly.Compared to NPK treatment,the dry matter amount of rice shoot in the treatment of NPK+Si increased by 4.1% and the grain yield increased by 6.2%.The key factors affecting the yield of rice were panicles and grain number per panicle.The panicles and grain number per panicle of rice in the treatment of NPK+Si increased by 12.1% and 19.2% respectively compared to that in NPK treatment.Results also showed that Silicon fertilizer application enhanced the fracture resistance force of the rice stem by 16.3% compared to that of NPK treatment.The results of nutrient accumulation showed that applying silicon fertilizer improved the accumulation of N,P and K by 15.7%,10.1% and 15.5% respectively.These results showed that the effect of silicon fertilizer application on early rice in double rice cropping regions of Southeast Hubei was significant.