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坝上地区老龄林带嫁接更新的最佳时间为4月25日至5月5日。最佳接穗选用无病虫害的一年生良种壮条。最佳嫁接改造的杨龄20—25年生。其嫁接的技术要点是: 1.半带嫁接更新。首先在林带的背风面,伐除林带行数的一半,伐根要低而平,高出地面不要超过5厘米。待嫁接的幼树长到与原有林带树高三分之二时,再更新改造另外半带。 2.办好技术训练,备好嫁接用具。嫁接前要进
The best time for grafting and regeneration of aged belt in Bashang is from April 25 to May 5. Selection of the best scion without pests and diseases of the annual seed. The best grafting transformation Yangling 20-25 years old. The grafting of the technical points are: 1. Half-band graft update. First of all, on the leeward side of the forest belt, half the number of forest belts should be removed. The cutting root should be low and flat, not more than 5 centimeters above the ground. When the young tree to be grafted grows two-thirds of the height of the original forest tree, it will be rebuilt and transformed into another half-belt. 2. To do a good job of technical training, ready grafting equipment. Before entering the grafting