栽培因素对北方粳稻产量及米质的影响——第8报 插秧时间对产量及米质的影响

The Effect of Cultivation Factors on Northern Rice Yield and Quality The 8th Report:The Effect of Transplanting Time on the Yield and Quality of Rice

不同插秧时间对产量及米质影响研究结果表明,晚插秧时对于水稻的株高生长、分蘖发育、叶龄增长都没有太大的影响,而影响最大的是千粒重,其次是平均每穗粒数。早插秧时每穴有效穗数有所减少。晚插秧时虽然有利于提高外观品质和食味品质,但不利于提高加工品质。本试验条件下,一般在5月25日前后5d开始和结束插秧,可以兼顾产量和米质。

The effect of transplanting time on rice yield and quality showed that the late transplanting has seldom effect on plant height, tillering development, and leaf age, hut has a great effect on 1000-grail, weight and mean grains per panicle. Early transplanting lead to the decrease of effective panicles per hill; however, late transplanting was favorable to increase the appearance quality and eating quality, but not helpiul to increase the milling quality. In this experimental condition, the transplanting duration before and after five days of May 25th is suitable to combine high yield and fine quality.