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目前,在促进林木开花结实的栽培管理措施中,施肥、浇水越来越被人们所重视。因为肥、水措施效果良好、持久,且对树体无破坏作用,是环剥、绞缢、切根、修枝等措施所不能比拟的。 肥、水对落叶松开花结实有何效应,多年来国外专家一直存有争议、Mejnartowicz(1970)曾指出施肥对欧州落叶松开花结实有相反的效应;Hoffman(1968)也曾报道,落叶松种子园结实消耗的养分极少,似乎施肥并无必要。而落叶松母树林、种子园的经营管理又急需这方面的资料。我所在塞罕坝机械林场经过10年的定位试验,现将部分结果整理如下:
At present, in promoting cultivation and management of forest flowering and fructification measures, fertilization, watering more and more attention. Because of fertilizer, water measures good effect, lasting, and no damaging effect on the tree, is girdling, twisted 缢, cut root, pruning and other measures can not be compared. Fertilizer, water on the larch flowering and fructification what effect, foreign experts have been controversial over the years, Mejnartowicz (1970) had pointed out that fertilization on the European larch flowering firm with the opposite effect; Hoffman (1968) has also been reported, deciduous Pine seed garden strong nutrients consumed very little, it seems that fertilization is not necessary. The deciduous tree forest, seed garden management and urgent need for this information. After 10 years of positioning test at Saihanba Machinery Forest Farm where I am located, some of the results are summarized as follows: