灌浆乳熟期不同水分处理对水稻产量的影响

研究灌浆乳熟期不同水分处理对水稻生长发育及产量的影响。试验采用盆栽方法,设3个处理水平,处理H1保持土壤湿润,土壤水势为0,处理H2土壤水势-30 kPa,处理H3土壤水势-50 kPa,以水稻灌浆乳熟期保持水层作对照(CK)。结果表明,处理H1有效穗数与CK无差异,千粒重比CK高10.42%,差异达极显著水平(P<0.01);产量处理H1比CK高12.76%,差异达显著水平(P<0.05)。水稻灌浆乳熟期保持土壤湿润,增加了水稻粒重提高了水稻产量,同时又节约了水资源。

Effect of Different Water Disposal on Growth and Yield of Rice in Milking Stage

Effects of different water disposal on growth and yield of rice were studied.The method of the pot culture was chosen and three levels were designed in the experiment.Comparing with the treatment of keeping water flooding,there were three other treatment.Treatment one,soil water potential was zero(90%~100% of soil saturation contains water);treatment two,soil water potential was-30 kPa;treatment three,soil water potential was-50 kPa.The results showed that there was no significantly between number of available ear of the treated H1 and that of the control,weight of 1000-grains of the treated H1 was 10.42% higher than that of the control,it was great significant(P<0.01);the yield of rice of the treated H1 was 12.76% higher than that of the control, it was significant(P<0.05).Weight of grain of rice was enhanced and the yield of rice was increased by keeping soil moist in milking stage of rice,in the meantime,water resources was saved.