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研究了早稻抽穗、结实期开花、乳熟和蜡熟三阶段,不同土壤水分(土壤饱和含水量的80％、60％、40％和25％)对结实和籽粒品质的影响,结果表明:籽粒产量除开花阶段降至土壤饱和含水量的80％和60％两处理外,结实率除开花阶段降至土壤饱和含水量的80％和处理外,均随土壤水分下降而降低;在开花阶段,当降低到土壤饱和含水量的25％时,结实率降低,秕粒增加,而且空粒显著增多,千粒重亦显著下降.在水稻结实期各阶段,土壤水分降低使精米率显著提高,青米率下降,同时精米中的直链淀粉含量减少,糙米中蛋白质含量显著提高.
The effects of different soil moisture (80%, 60%, 40% and 25% of soil saturated water content) on seed setting and grain quality were studied in three stages of heading, flowering, ripening and wax ripening in early rice. The results showed that grain Except for 80% and 60% of the saturated soil moisture content during the flowering stage, the seed setting rate decreased with the decrease of soil water content except for flowering stage, which decreased to 80% and saturated soil moisture content. In flowering stage, When the soil water content decreased to 25%, the seed setting rate decreased, the grains increased, the number of kernels increased significantly, and the thousand-kernel weight decreased significantly.When soil moisture decreased, the milled rice rate increased significantly, Decreased, while the amylose content in polished rice decreased, brown rice protein content increased significantly.