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为了掌握平棚栽培葡萄的适宜叶面积指数(LAI),在不加温的玫瑰露品种园内,试验比较了背荫叶片与向阳叶片的光合产物的生产能力。结果表明,背荫叶小区的干物质重量增加得较少:而向阳叶小区的纯生产量超过了30％。两个小区试验中.光合产物均是果实中分配最多,而根系中分配较少,尤其背荫叶小区的分配率更低。背荫叶小区每张叶片的叶面积比向阳叶小区的大,然而每株树上抽生
In order to understand the suitable leaf area index (LAI) of cultivated grapevine in a canopy greenhouse, the ability of photosynthate production from the shade-leaf and the sun-set leaves was compared in an unwarranted rose rosette plantation. The results showed that the dry matter weight of the backlit leaf plot increased less: the net yield of the sunny leaf plot exceeded 30%. In the two plot experiments, photosynthetic products were the most distributed in the fruit and less in the root system, especially the distribution rate of the backlit leaf community was lower. Leaf area of each leaf in the shade leaf area is larger than that in the leaf area of the sunny leaf, however,