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皱桐是我国南方的重要经济树种之一。1975年,广西林科所和崇左油桐试验站台作,选育成功桂皱27号等四个高产优良无性系,常年产量较对照实生繁殖增产5—9倍,从而使全区各地以至广东、福建、浙江等省均开始大面积引种皱桐高产无性系。至目前为止,这些省(区)的栽培面积约为15万亩。一、试验方法我们自1974年开始研究采穗圃的经营技术,至1981年,全区建立原种采穗圃1个,中心采穗圃4个,临时采穗圃43个,总面积共449亩,共穗树32674株;1976—1983年共产穗芽1197.23万,可供造林10万亩以上(表1)。
Davidia involucrata is one of the important economic tree species in southern China. In 1975, Guangxi Linke and Tung Oil Tung Experimental Station for the selection of successful GUI Wei 27, four high yield fine clones, the perennial yield increased 5-9 times more than the control of real reproduction, so that all parts of the region and Guangdong , Fujian, Zhejiang and other provinces are beginning to introduce a large area of high yield clone Paulownia clones. So far, the cultivated area of these provinces (districts) is about 150,000 mu. First, the test method Since 1974, we began to study the operating techniques of mining garden, to 1981, the region to establish a seed mining garden, the center of 4 sprouts, temporary sprouts 43, a total area of 449 Mu, a total of 32,674 plants spike; 1976-1983 11,972,300 total spikes, available for afforestation 100,000 mu more (Table 1).