不同促脂剂对湿地松家系的增脂效果及对生长的影响  

Effects of Different Resin-Stimulant Pastes on Resin Production and Growth of Pinus elliottii Families

作　　者：王哲 刘阳 赵奋成[1] 曾明 李福明 吴惠姗[1] 李义良[1] 廖仿炎[1] 邓乐平 钟岁英 郭文冰[1] Wang Zhe;Liu Yang;Zhao Fencheng;Zeng Ming;Li Fuming;Wu Huishan;Li Yiliang;Liao Fangyan;Deng Leping;Zhong Suiying;Guo Wenbing(Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization Guangdong Academy of Forestry,Guangzhou 510520;Hongling Seed Orchard,Taishan 529223)

机构地区：[1]广东省森林培育与保护利用重点实验室、广东省林业科学研究院,广州510520 [2]台山市红岭种子园,台山529223

出　　处：《林业科学》2022年第9期106-116,共11页Scientia Silvae Sinicae

基　　金：国家重点研发计划项目(2017YFD0600502)。

摘　　要：【目的】明确不同成分促脂剂对湿地松的促脂效果以及对生长量的影响,筛选出适宜广东地区湿地松的促脂剂,为实际生产中降低采脂成本提供参考。【方法】以广东省台山市红岭种子园的湿地松半同胞子代测定林为研究对象,分别进行不割脂(T0,生长量对照)、常规割脂(T1,试验对照)和使用不同成分促脂剂T2~T5割脂,促脂剂的主成分分别为K2SO4、萘乙酸(NAA)、苯甲酸(BA)和乙烯利(CEPA)。2018年处理并收集松脂7次,2019年处理并收集松脂6次,在处理前收集1次不使用促脂剂的本底产量,所有产脂量和生长量均进行每木测量。【结果】2018年分析结果显示,家系效应和处理效应都极显著(P<0.01),二者互作效应不显著(P>0.05)。前2次促脂效果极显著,增脂率超过135%,而第3次促脂效果有所下降,到第4次时只有T5的脂产量高于对照,但也未达到显著水平,第5~7次T2-T4均没有显著的促脂效果,仅T5依旧保持19%以上的增脂率。7次收集总脂产量显示T5促脂效果最好,增脂率为51.73%。2019年分析结果显示,家系效应在第1次收集不显著(P>0.05),在其他批次都是显著或极显著水平(P<0.05),各个处理组的产脂量本底值无显著差异,之后6次均显示出显著的促脂效果,增脂率29%~269%。6次收集总产量显示,T5促脂效果最好,增脂率为160.61%。各家系产脂量的排名在不同年份、不同处理间变化较大,其中家系I2和I7相对较稳定。2年的生长量分析结果表示湿地松家系效应显著,不同处理组之间的生长量无显著差异,不同处理组之间树高和0.9 m的直径在1年内的增量也没有显著差异。同一年份内不同批次的产脂量有极显著的相关性,相关系数范围0.245 5~0.854 4;不同批次与总产量的相关系数,2个年份均是第1次割脂与总产量的相关系数最低。产脂量与生长量的相关性分析结果显示,产脂量与0.9 m高处的直径有较稳定的极显著正相关【Objective】This study aims to clarify the effect of the different kinds of resin-stimulant pastes on resin production and growth of Pinus elliottii, and to screen out the resin-stimulant paste suitable for P. elliottii in Guangdong, so as to guide actual production and reduce the cost of resin tapping.【Method】This study was conducted in the half-sib progeny test forest of P. elliottii in Hongling Seed Orchard, Taishan, Guangdong. Six treatments were set, and they were non-tapping(T0, for growth control), conventional tapping without any resin-stimulant paste treatment(T1, for experimental control), and tapping treated with different components of resin-stimulant pastes(T2-T5). The main components of the pastes were K2SO4, naphthalene acetic acid(NAA), benzoic acid(BA) and 2-chloroethylphosphonic acid(CEPA), respectively. In 2018, the trees were treated and harvested seven times, and in 2019, they were treated and harvested six times. Before the treatment, the basic value of resin yield was harvested without resin-stimulant pastes. The resin yield and growth trait were all measured per tree.【Result】The result in 2018 showed that the effects of both family and resin-stimulant paste treatment were extremely significant(P<0.01), however their interaction effects were not significant(P>0.05). The first two collections showed that the resin stimulating effect was extremely significant, with the resin increase rate over 135%. However, resin stimulating effect decreased in the third collection. By the fourth time, only T5 treatment group had a stimulating effect, but it did not reach a significant level. From the fifth to seventh times, T2-T4 treatment group did not have a significant stimulating effect, but T5 treatment still maintained the resin increase rate of more than 19%. The total yield of resin for seven collections showed that T5 treatment group had the best resin stimulating effect, with a resin increase rate of 51.73%. The result in 2019 showed that the family effect was not significant in the fir

关 键 词：湿地松 产脂量 促脂剂 生长量 混合线性模型 

分 类 号：S759.6[农业科学—森林经理学]