论文部分内容阅读
对２５个杉木家系的一年生实生苗根际人工接种等量杉木半穿刺线虫（Ｔｙｌｅｎｃｈｕｌｕｓｓｅｍｉｐｅｎｌｔｒａｎｓ））二龄幼虫，叶部喷洒等浓度的炭疽病病原菌分生孢子，三年后测出叶部炭疽病病情指数、苗木地径和高生长量，分析结果表明：编号为１８和编号为１的两个家系为高抗病速生优良家系；编号为２８和编号为２７的两个家系为高度感病家系．为杉木半穿刺线虫病的综合防治和杉木速生丰产提供了科学依据和抗病品种
The second-instar larvae of Tylenchulus semperltrans were inoculated into the root of the annual seedlings of 25 Chinese fir families, and the leaf spores were sprayed with conidia of anthracnose pathogen at a concentration of three days to detect the anthracnose in leaves Index, seedling diameter and high growth rate. The results showed that two families with number 18 and number 1 were highly resistant and resistant to high birth rate. Two families with number 28 and number 27 were highly susceptible. The results provided scientific basis and fast-growing varieties for the comprehensive control of Chinese fir semi-puncture nematode disease and fast-growing Chinese fir