【摘要】 庆阳市新栽早实核桃越冬易受冻害,2011~2013年选择定植1~2年的山地核桃幼园,开展核桃幼树越冬防寒单项与组合试验。结果表明:单项防寒措施以套袋填土和压倒埋干效果最好,枝干绑草效果次之;组合防寒措施以树干刷植物防冻剂+绑草和树干刷聚乙烯醇+绑草的防寒效果最好,枝干涂白+绑草效果较差。在庆阳山地核桃幼园越冬管理中,宜采取枝干套袋填土、压倒埋干等防寒措施,可有效保证新栽核桃幼树安全越冬;同时采取树干涂刷植物防冻剂+绑草和涂刷聚乙烯醇+绑草等防寒措施,也对新栽核桃幼树安全越冬有较好的效果。更多还原

【Abstract】 Early-fruiting walnut susceptible to frozen injury over winter in Qingyang city, single and composite tests of overwintering were carried out in walnut orchards which transplanted 1~2 a in hilly area. The result showed that: in the individual test, bagging-filling and trunk buried on root treatments are best; second is wrapping straw in the branches; in composite tests, the effect of brush antifreeze+poly(vinyl alcohol) +wrapping straw is best; the effect of white paint+wrapping straw is poor. In the overwintering management of walnut orchards in Qingyang hilly area, the techniques of bagging-filling and trunk buried on root can keep newly planted walnut young trees overwintering safety; at the same time, using antifreeze, poly(vinyl alcohol) and wrapping straw also has good effect for overwintering.更多还原