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建德市现有板栗林 3 893hm2 ,年产栗 12 0 0t,均产仅 30 75kg/hm2 。多年调查研究表明 ,严重的病虫危害 ,粗放、不科学的经营管理和不适的立地条件是造成长期低产徘徊的主要原因 ,须经综合治理 ,才能实现稳产高产
Jiande existing chestnut forest 3 893hm2, with an annual output of 1000t, producing only 30 75kg / hm2. Years of investigation and study have shown that serious pest and disease damage, extensive and unscientific management and disagreement with the site conditions are the main causes of long-term low-yielding and wandering. Only through comprehensive management can we achieve stable and high-yielding