论文部分内容阅读
幼龄黄松林地中的根腐病造成严重的中心病区,常常使树木枯死,林地长期不能生产。本文报道采用土壤熏蒸剂处理根腐病的试验。试验地主要树种是黄松,试验树按近地面树干直径大小分为三级(10—18厘米,20—28厘米和30—38厘米),每级6—11株为一小区,每一小区分别用下列熏蒸剂处理:(1)二硫化碳;(2)威百亩(32.7%N-甲基二硫代氨
Root rot in young pine forests causes serious central ward, often causing trees to die and long-term inability to produce woodlands. This paper reports the use of soil fumigants to treat root rot. The main tree species in the experiment is Ponderosa, and the experimental tree is divided into three levels (10-18 cm, 20-28 cm and 30-38 cm) according to the diameter of trunk near the ground. Each level 6-11 is a small area. Each plot Each was treated with the following fumigants: (1) carbon disulfide; (2) Viagra (32.7% N-methyldithiamidine