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1992~1995年,以汕优63、K优3号、K优5号为材料,研究了杂交中稻单茎茎鞘干物重与再生力的关系及其高产途径。结果表明:(1)头季稻生长后期光合物质是影响再生芽生长的主导因素,环境因素仅能通过光合物质间接起作用;(2)头季稻生长后期单茎茎鞘干物重分别与再生芽活芽率、芽长、芽重、再生稻产量及其构成因素呈显著或极显著正相关,头季稻产量、收获指数分别与再生芽长呈极显著负相关;(3)在保证头季稻高产所需有效穗数前提下,提高成穗率、提高头季稻抽穗后单位颖花绿叶占有量、施促芽肥可有效增加母茎单茎茎鞘干物重,实现中稻及再生稻双高产。
From 1992 to 1995, with Shanyou 63, Koyu 3 and Kyou 5 as materials, the relationship between dry matter weight per plant and shoot regeneration and their high yielding ways were studied. The results showed as follows: (1) The photosynthetic substances in the first crop of paddy during the later growing season were the dominant factors affecting the growth of regenerated shoots, and the environmental factors could only play an indirect role through photosynthetic substances. (2) There was a significant or very significant positive correlation between the shoot bud percentage, bud length, bud weight, regenerative rice yield and its components. The first-crop rice yield and harvest index were significantly and negatively correlated with the regenerative bud length respectively. (3) Under the prerequisite of effective panicles needed for high yield of quaternary rice, the percentage of ear to ear was increased, the percentage of spruce green leaf to unit of heading crop increased after heading, and the amount of dry matter of stem and sheath of stem Double high yield.