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

机译：超级稻单季轻播小苗对产量形成的影响。

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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.
机译：研究了小苗轻栽对单作超级稻赣亚1号和中优752单株产量形成的影响，结果表明，小苗移栽在生育初期具有明显的优势，包括早期叶面积的迅速增加。阶段，净同化率高，干物质产量高，分till快速出苗，特别是低节上的分many多，有效穗数大，有利于高产，但也有一些缺点，如高穗分till率低。 ，后期容易腐烂，收获指数低等；轻栽有利于克服上述不足，赣亚1号和中油752适宜的移栽苗分别为1.0〜110万/ hm〜2和0. 75〜0.85百万/ hm〜2的主茎幼苗；提出了超级水稻高产栽培技术：在合理稀疏移栽小秧苗的基础上，增加中后期施肥的比例，适时在阳光下晒田，以期达到最佳的产量。控制无效的分ers并避免在后期过早腐烂。

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