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Effects of Light Planting with Small Seedlings on Yield Formation in Single - cropping SeasonSuper Rice

文献类型： 会议论文

第一作者： Peng Chunrui

作者： Peng Chunrui 1 ; Qiu Caifei; Chen Chunlan; Liu Guangrong; Cao Kaiwei; Jiangxi Association for Science & Technology(CN);;

作者机构： 1.Soil and fertilizer research institute, Jiangxi Academy of Agricultural Sciences, Nanchang 330200

关键词： small seedlings;light planting;super rice;yield formation;cultural techniques

会议名称： Industrialization of Hybrid Rice

主办单位：

页码： 292-299

摘要： The effects of light planting with small seedling on the yield formation in single cropping super rice Ganya 1 and Zhongyou 752 were studied in this paper, the results indicated that transplanting small seedling had significant advantages at early growth stage including rapid increase of leaf area at early stage, high net assimilation rate, much production of dry matter, quick emergence of tillers, especially many tillers on low node, plenty of valid panicles, which were benefit to high yield, but it had also some disadvantages such as low percentage of earbearing tiller, being prone to premature decay at late stage, low harvest index etc; light planting was favorable for overcoming above- mentioned shortages, the suitable transplanting seedlings for Ganya 1 and Zhongyou 752 were 1.0 ～ 1.1 million /hm~2 and 0. 75 ～ 0. 85 million /hm~2 main stem seedlings respectively ; the high - yielding cultural techniques of super rice were put forward as follows: on the basis of reasonable sparse transplanting with small seedlings, increasing the proportion of fertilization in middle and late period, drying the field in the sun in good time with a view to controlling invalid tillers and avoiding premature decay at late stage.

分类号： S511

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