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1988～1989年在兴化市对杂交水稻献改优63栽培特性、群体发展、净光合强度、灌浆速率和植株状况进行了分析研究。结果表明,产量构成因素中,每穗总粒数对产量的作用最大、每亩穗数其次,结实率第三,千粒重最小。高产的理想株型呈“腰鼓形”。结果还表明,该品种基部节间大维管束的截面积、穗型,叶面积指数大,叶积、净光合速率、干物质生产率高,有一定的生产潜力。但该品种结实率不稳。多效唑对调节株型和库-源关系有一定的作用。本文提出了一条中期早控、后期稳促、主攻大穗、增加每亩总颖花量的高产栽培途径。
From 1988 to 1989, the cultivation characteristics, population development, net photosynthetic intensity, filling rate and plant status of hybrid rice improved in Xinghua were studied. The results showed that among the components of yield, the total grain number per panicle had the greatest effect on the yield, followed by the panicles per acre, followed by the third and the smallest grain weight. The ideal type of high yield was “drum-shaped.” The results also showed that cross section area, panicle type, leaf area index, leaf area, net photosynthetic rate and dry matter productivity of the large basal internode of this variety had high production potential and certain production potential. However, the variety is not stable fruiting rate. Paclobutrazol has a role in regulating plant type and pool-source relationship. This article presents a medium-term early control, the latter part of the steady, the main big spike, increase the total yield per acre of high-yield cultivation methods.