播种量对机喷直播水稻准两优608头季产量及碾磨品质的影响

Effects of Seeding Rate on Main Yield and Milling Quality of Rice Zhunliangyou 608 with Mechanized Jet-sowing

研究播种量对机喷直播水稻准两优608的影响,结果表明:不同的播种量对机喷直播准两优608头季水稻群体生长指标有一定的差异性影响。播种量的增加未明显增加有效穗数,不同播种量对头季稻米的出糙率、精米率影响差异不显著。播种量22.5 kg/hm2较30.0、37.5 kg/hm2能提高成穗率、每穗总粒数和实粒数。机喷直播用种量掌握在22.5 kg/hm2较为适宜,有利于建立较佳的水稻生长群体。

The effects of seeding rate on Zhunliangyou 608 were studied,the results showed that different seeding rate had a certain difference influence on the population growth index of Zhunliangyou 608. The effective panicles wasn＇t increased with the increasing of seeding rate. The brown rice rate and milled rice rate of main crop were no significant difference between different seeding rate. 22.5 kg per hectare seeding rate could get more rate of spike,the total number of grains per panicle and grain number per panicle than 30.0 kg and 37.5 kg. 22.5 kg per hectare seeding rate was suitable for mechanized jet-sowing seeding, which was beneficial to establish nice growing population.