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青铜峡市位于青铜峡灌区十大干渠之首,排灌畅通。1985年以来新植果树面积达3.2万亩。由于冬寒长,冻土层厚度为80～100厘米,新植幼树必须埋土越冬,尤以2～3年生幼树每年冬季埋土,不仅费工,而且对树体损伤很大,常造成主侧枝劈裂,埋土时若土壤湿度过大易发生主枝烂皮,严重地影响树体生长,推迟结果期。为此我们于1987～1988
Qingtongxia City is located in Qingtongxia Irrigation District, the top ten main canal, irrigation and drainage flow. Since 1985, the area of newly planted fruit trees has reached 32,000 mu. Due to the long winter, the thickness of permafrost is 80-100 cm. The newly planted saplings must be planted overwintering. Especially 2-3 year-old saplings are buried in the winter each year, which not only takes a lot of work but also damages the tree body very often Resulting in the main side branches cleavage, buried soil, if excessive humidity prone to rotten main branch, a serious impact on the growth of trees, postponed the results period. To this end we in 1987 ~ 1988