旱播水管对龙庆稻3号产量及品质的影响

Effect of Drought Direct-sowing with Water Management on Yield and Quality of Longqingdao3

采用大区对比法,研究旱播水管对龙庆稻3号产量及品质的影响。结果表明:与常规插秧相比,旱播水管增加了龙庆稻3号的株高,降低了龙庆稻3号的千粒重和理论产量。与常规插秧相比,旱播水管增加了龙庆稻3号的直链淀粉含量,降低了龙庆稻3号的整精米率、垩白粒率、精米长宽比、蛋白质含量和米饭食味评分。与常规插秧相比,旱播水管的机械作业、肥料、农药、灌溉、劳动和生产成本分别降低26.5%、21.4%、32.0%、25.0%、76.6%和29.0%,用水量降低25.0%,效益增加1 589.0元·hm^-2。

The effects of drought direct-sowing with water management(DDSWM)on yield and quality of Longqingdao3 were studied with large area contrast method. The results showed that compared with transplant rice seedlings,the plant height of Longqingdao3 under DDSWM increased,the 1000-grain weight and theoretical yield of Longqingdao3 under DDSWM decreased. Compared with transplant rice seedlings,amylose content of Longqingdao3 under DDSWM increased,head rice rate,ratio of length and width of milled rice,chalkiness rate,and protein content and rice taste value of Longqingdao3 under DDSWM decreased. Compared with transplant rice seedlings,mechanical operating,fertilizer,pesticide,irrigation,labor and production cost of Longqingdao3 under DDSWM decreased by 26.5%,21.4%,32.0%,25.0%,76.6% and 29.0%,respectively,water consumption of Longqingdao3 under DDSWM decreased by 25.0%,benefit of Longqingdao3 under DDSWM increased 1 589.0 yuan·hm^-2.