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《China Rice》 2016-02
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Effects of Bud Fertilizer and Stubble Types on Grain Yield and Regeneration Capacity of Ratoon Rice in Northeast of Jiangxi Province

XIA Guilong;OUYANG Jianping;LIU Kailou;LI Yazhen;ZHOU Lijun;YU Paolan;HU Huiwen;Protospecies Farm of Dengjiabu;Jiangxi Institute of Red Soil , National Engineering and Technology Research Center for Red Soil Improvement,Scientific Observational and Experimental Station of Arable Land Conservation in Jiangxi, Ministry of Agriculture;  
The northeast of Jiangxi Province is suitable for planting ratoon rice because of sufficient light and heat resources. Filed experiments were carried out to explore the reasonable application period of bud fertilizer, harvesting methods and better height of stubble. The results showed that bud fertilizer could improve grain yield of ratoon rice. Compared with no bud fertilizer treatment, the yields of ratoon rice in 170 kg/hm2 N and 125 kg/hm2 N were increased by 48.9% and 36.9%, and the effective panicles and grains per panicle were also increased. The yield of manual harvesting ratoon rice was higher than mechanical harvesting, and its buds on stubble, the effective panicles and grains per panicle were increased by 7.7%, 27.9% and 11.6%. In manual harvesting, compared with low stubble, higher stubble could improve grain yield, buds on stubble, effective panicles and grains per panicle of ratoon rice.Therefore, the study shows that, 170 kg/hm2 N and the manual harvesting is the better management mode of ratoon rice in the Northeast of Jiangxi Province.
【Fund】: 江西省科技支撑计划(20151BBF60084);; 公益性行业(农业)科研专项(201203030);; 国家重点基础研究发展计划(“973”计划)(2011CB100501)
【CateGory Index】: S511
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