农业工程学报2003，Vol.19Issue(5)：91-97,7.
乳芽直播种植技术条件下水稻生长特性的研究
Growth characteristics of rice seedlings using direct sowing technology
摘要
Abstract
To search the optimum planting technology of rice direct sowing and its corresponding production mechanization, the contrast paddy-field experiments on direct sowing of baby rice seedlings, the rice transplanting, and the rice broadcasting were done in Jingertun village of Liaoyang. The growth characteristics of the root length, amounts and the height of baby rice seedlings during the breeding period were studied. It was showed that the operation of training seedling had the restrained effects on the increment speed of the root length and the height of the baby rice, but it did not affect the increment of the amounts of the roots. Compared to the routine sowing methods, the direct sowing technology of baby rice seedlings has the advantages as follows, growing quickly in the period from May 20 to July 27, tillering and heading earlier and the node of tiller lower. But the method had the shortcoming of the lower effective tiller ratios because of heavy sowing densities. The spike density of the baby rice sowing was 5387000 head/hm2, the grain ripened of each spike was 76.8, and the one thousand-grain-weight was 0.0246 kg.关键词
水稻乳芽直播/秧苗生长特性/苗高/根长/分蘖/穗粒数Key words
direct sowing of baby rice seedling/growth characteristics of rice seedling/rice height/root length/tiller/grain amount per head分类
农业科技引用本文复制引用
任文涛,崔红光,辛明金,张占勇,贺智涛,宋玉秋,林静,包春江,王瑞丽..乳芽直播种植技术条件下水稻生长特性的研究[J].农业工程学报,2003,19(5):91-97,7.基金项目
Natural Science Fundation of Liaoning Province(20022082) （20022082）
