摘要
为揭示马尾松母树失叶率对种子产量与质量的影响,于2017年3月以福建省沙县官庄国有林场马尾松2代种子园的母树为研究对象,模拟食叶害虫不同的危害程度,采用人工摘除针叶的方法,研究马尾松母树不同失叶率对当年、次年和第3年的种子产量与质量的影响。结果表明:母树的失叶率达30%以上,当年和次年马尾松种子的产量、千粒重、净度和发芽率大幅下降,种子产量与质量均受影响;种子所培育苗木的苗高、地径、根系长度、Ⅰ级侧根数和苗木合格率以及造林成活率亦显著下降;母树的失叶率对第3年的种子产量与质量的影响不显著。影响马尾松种子产量与质量的最低失叶率为25%,该指标可为马尾松种子园主要食叶害虫防治提供参考。
The mother tree of 2 generation seed Orchard of Pinus Massoniana in Guanzhuang State-owned Forest Farm of Shaxian County,Fujian Province,was used to simulate the different damage degree of leaf-eating pests.The effects of different defoliation levels on the seed yield and quality of P.Massoniana in the same year,the next year and the third year were studied.The purpose is to provide scientific decision-making basis for controlling main leaf-eating pests in seed Orchard of P.Massoniana.The results showed that the defoliation rate of mother tree was more than 30%,and the seed yield,1000-grain weight,seed clarity and germination percentage of P.Massoniana decreased greatly in that year and the next year,and the seed yield and quality were affected.The height,diameter,length of root system,number of grade I lateral roots,qualified rate of seedling and survival rate of afforestation were also significantly affected.The defoliation level of mother tree had no significant effect on the seed yield and quality in the third year.The lowest defoliation level which affects the seed yield and quality of P.Massoniana is 25%.
作者
洪宜聪
王启其
黄健韬
孟庆银
郑增禄
陈道顺
伊昊
HONG Yicong;WANG Qiqi;HUANG Jiantao;MENG Qingyin;ZHENG Zenglu;CHEN Daoshun;YI Hao(Forestry Bureau of Shaxian County,Sanming 365050,Fujian,China;Fujian province Shaxian County Guangzhuang state-owned forest farm,Sanming 365050,Fujian,China;Forestry Bureau of Nanpingcity,Nanping 354200,Fujian,China)
出处
《福建林业科技》
2020年第4期31-36,52,共7页
Journal of Fujian Forestry Science and Technology
基金
福建省公益类项目(长汀中轻度侵蚀区生态经济型模式综合效益稳定性研究,2017R1011-4)
三明市科技局研究项目(植物源农药对福建主要林木食叶害虫毒力及应用研究,9352019y0127)
三明市林业科技研究项目(马尾松种子园主要食叶害虫防治技术研究,明林综[2019]65号)。
