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观察了不同时期水稻主栽品种库源结构的演变，主要结果如下：（１）４０多年来，福建省水稻品种经历了高秆品种、矮秆品种、杂交稻的演变，使稻谷产量提高５５％；（２）随着品种的改良，水稻库容量增加６３％．其中，２０％依靠穗数的增加，８０％依靠每穗粒数的增加，而粒重和结实率变化不大；（３）随着品种的改良，反映源强的干物质积累总量（Ｗ）增加４０％．Ｗ的增加主要依靠叶面积指数（ＬＡＩ）的扩大和生长日数（Ｄ）的延长，净同化率（ＮＡＲ）却有所下降．但由于冠层叶片由披散型改变为直立型，阳光可透入群体深层，减少了ＮＡＲ随ＬＡＩ增大而降低的速率，显著增加了非结构性碳水化合物在营养器官的贮藏量和抽穗后干物质生产量，从而提高经济系数，确保在更高产量水平上的库源协调．
The main results are as follows: (1) For more than 40 years, rice varieties in Fujian have undergone the evolution of high-stalk varieties, dwarf varieties and hybrid rice, increasing rice yield by 55% ; (2) With the improvement of varieties, the rice storage capacity increased by 63%. Among them, 20% depend on the increase of panicle number, 80% depend on the increase of grain number per spike, and little change of grain weight and seed setting rate; (3) With the variety improvement, ) Increased by 40%. The increase of W mainly depends on the expansion of leaf area index (LAI) and the number of growing days (D), but the net assimilation rate (NAR) decreases. However, as the canopy leaves changed from the pallid to the upright type, the sunlight could penetrate deep into the population, reducing the rate of decrease of NAR with increasing LAI and significantly increasing the storage of non-structural carbohydrates in vegetative organs and post-heading Material production, thereby increasing the economic coefficient, to ensure coordination of the source of the reservoir at a higher level of production.