保山市核桃幼树冻害成因及防治技术措施

摘要

在实践和调查研究基础上,论述保山市核桃幼树冻害发生发展规律、冻害症状及危害程度,认为冻害的主要成因是低温或降霜降雪,干旱、栽培管理措施及选择栽培品种不当会加剧冻害发生的程度.藉此提出了预防核桃幼树冻害和处瑗冻害植株的技术措施.%Based on practice and investigation, the development of walnut seedlings freezing injury,freezing injury symptoms and degree of harm in Baoshan were discussed. It was redeemed that the main causes is the low-temperature freezing or frost and snow. Drought, inappropriate cultivation and management practices and cultivar selection will intensify the extent of frost damage occurs. Measures to prevent walnut saplings freezing injury and processing technical measures of freezing plants are proposed.