【摘要】 通过不同生育期类型品种生产力的研究，揭示了品种间生育期越长产量越高的生物学规律。在此基础上提出了江苏的一种新的水稻品种布局与栽培模式。即在麦（油）稻两熟制中，根据不同地区水稻生长季的最大可能性，把以往认为适宜在苏中、苏南的较长生育期高产品种移植到淮北，把认为适宜苏南的较长生育期高产品种移植到江淮之间，并配套相应的高产栽培技术，从而更充分利用了稻季温光资源，在确保正常成熟的前提下，显著提高了产量与效益。更多还原

【Abstract】 The productivities of rice varieties with different growing period being compared, the biological rule, i.e. the longer the varity grows, the higher its yield is, was revealed. On the basis of the rule, a new variety regionalization and cultivation was formed in rice according to maximum possibility of season of rice growing in the special region in the wheat (or rape)-rice double crops systems, some rice varieties with rather longer growing period and higher yielding, which were considered as suitable planting in the middle and south of Jiangsu in the past, were planted to the north or middle of Jiangsu (Huaibei or between Yangtze river and Huai river). At the sametime, corresponding high yielding practices were established. So that, it can make good use of thermal and sunlight resource in season of rice growing. Under normal ripe, the yield and profit were improved sharply in the north and middle of Jiangsu.更多还原