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我县于1982年引进63、69、72三个杨树品种1983年元月引进一年生种条分别进行扦插育苗试验.1、扦插方法试验地在沱江岸边,地势平坦,新冲积沙壤土,PH5.5,面积0.5亩.扦插前结合深耕每亩施6%666粉8斤杀虫.施莱枯100斤作底肥.每个试验小区面积16平方米.63、69,72杨三种,插穗下切口分别为平行、30度、45度、60度四个处理.以平行切口作对照,采用随机区组排列,重复三次.1983年引种的种条3月上旬扦插.扦插时,剪切种条中,下部芽饱满的部份作插穗.长18-20厘米,上端为平行切口,离第一个芽1.5厘米.各品种的每个处
My county introduced in 1982 63,69,72 three poplar species January introduction of annual seedlings cuttings were tested .1, cutting method test ground in the Tuojiang River, flat terrain, the new alluvial sandy loam, PH5. 5, an area of 0.5 mu. Cutting before the combination with deep plowing per acre 6% 666 powder 8 kg insecticide. Shiwei 100 pounds for the base fertilizer. Each experimental plot area of 16 square meters .63,69,72 Young three, cuttings The incisions were parallel, 30 degrees, 45 degrees, 60 degrees four treatments. Parallel incision for the control, using random block arrangement, repeated three times. Introduced in 1983 species of early March cuttings. Cutting, the cut species Middle and lower part of the sprout full bud cuttings, 18-20 cm long, parallel to the top of the incision, from the first bud 1.5 cm each of the variety of each