Effects of Different Tillage Methods on Growth Characteristics and Yield Formation of Indica Hybrid Rice

HUANG Yougang;FENG Yuehua;XU Guiling;LI Jie;YE Yong;MU Guiting;ZHANG Jiafeng;GUAN Zhence;College of Agronomy, Guizhou University;  

Using Neiwuyou 5399 as material, the effects of different tillage methods on growth characteristics and yield formation of indica hybrid rice were studied. The results showed that there were no significant difference in tillering, effective spike rate, leaf area index, the transport capacity of stem, sheath and leaf, NAR and CGR, but the dry matter accumulation were significantly different at heading stage. During the whole growth period, the amount of nitrogen absorption and phosphorus absorption of rotary-tillage were higher than that of conventional-tillage, but there was no significant difference between the two treatments. There were significant difference in potassium absorption before heading between the two treatments, but were not significant after heading. In yield formation,the total grains per panicle, seed setting rate and 1 000 grain weight of conventional-tillage were significantly higher than those of ro-tary-tillage. The effective panicles of conventional-tillage was higher than that of rotary-tillage, but was not significant. The yield of conventional-tillage was 11 505.66 kg/hm~2, it was slightly higher than that of Rotary-tillage, but was not significant. On the whole, the effects of rotary-tillage and conventional-tillage treatments on growth characteristics and yield of hybrid indica rice were not too great.From the point of view of productivity, we can popularize the method of rotary tillage according to the actual situation.

【Fund】： 国家自然科学基金(31360311、31160263);; 公益性行业(农业)科研专项经费项目子项(201503118-03);; 贵州省农业科技攻关项目(黔科合NY[2011]3085号;黔科合NY[2013]3005号 黔科合支撑[2016]2563号);; 贵州省作物学省级重点学科建设计划(黔学位合字ZDXK[2014]8号);; 贵州省普通高等学校粮油作物遗传改良与生理生态特色重点实验室项目(黔教合KY字[2015]333);; 贵州大学研究生创新基金(基金编号:研农2017024)
【CateGory Index】： S511.21

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