杂交稻精量条播育秧机插漏秧率与均匀度分析

Analysis of Missing Hill Rate and Uniformity of Seedlings Transplanted by Machine in Precious Drilling Sowing of Hybrid Rice

以杂交稻品种中浙优1号和甬优1540为供试材料,以撒播为对照,研究了精量条播的种子分布、漏秧率及机插苗数的均匀性。试验结果表明,杂交稻精量条播种子分布均匀性较撒播提高82.0%;条播能够显著降低低播量下的漏秧率,条播下中浙优1号和甬优1540漏秧率分别比撒播方式平均降低76.2%和85.5%;精量条播下中浙优1号和甬优1540的机插苗数均匀度比撒播方式平均提高53.5%和46.5%。采用杂交稻精量条播技术能够解决目前杂交稻机插漏秧率高和机插苗数不均匀的问题。

In this study,Zhongzheyou 1 and Yongyou 1540 were used to study the seed distribution,the rate of missing hill and the uniformity of seedlings with mechanical transplanting under drill sowing compared to broadcast sowing.The results showed that,the uniformity of seed distribution by drill sowing was 82.0%higher than that of broadcast sowing;drill sowing significantly reduced the rate of missing hill.The rates of missing hill of Zhongzheyou 1 and Yongyou 1540 by drill sowing were 76.2%and 85.5%lower than that of the broadcast sowing,respectively;the uniformity of seedlings with mechanical transplanting of Zhongzheyou 1 and Yongyou 1540 were increased by 53.5%and 46.5%by drill sowing than that of broadcast sowing.The study ascertained that seed drill sowing technology could solve the problem in hybrid rice machine transplanting with high missed hill rate and low uniformity of machine transplanting seedlings.