森林工程2025，Vol.41Issue(3)：538-545,8.DOI:10.7525/j.issn.1006-8023.2025.03.010
乙烯利调控橡胶树胶乳产量和品质的阈值分析
Threshold Analysis of Ethephon to Control the Yield and Quality of Latex of Hevea brasiliensis
摘要
Abstract
The effects of ethephon(ETH),ethephon inhibitor 1-methylcyclopropene(1-MCP)and cysteine(CYS)on the yield and main quality indexes of rubber tree latex were analyzed,and the dosage threshold was calculated.An opti-mized orthogonal experimental design was used to analyze 14 treatments with three factors(ETH,1-MCP,CYS)and four levels(four concentrations of each reagent)for applying rubber tree cut surfaces.Key indicators such as rubber latex yield,dry rubber content,molecular weight,initial plasticity value,plasticity retention index and Mooney viscos-ity were measured,and the correlation between the indicators was analyzed.The results showed that there were signifi-cant differences in yield and dry rubber content of 14 treated rubber trees.Correlation analysis showed that the number-average molecular weight was positively correlated with the weight-average molecular weight and Mooney viscosity,and the correlation coefficient was 0.71 and 0.83,respectively,and the correlation coefficient was negative with the polydis-persity indexes,and the correlation coefficient was-0.91.Initial plasticity value was positively correlated with Mooney viscosity,and the correlation coefficient was 0.73.The polydispersity indexes was negatively correlated with Mooney vis-cosity with the correlation coefficient-0.89.The regression equations based on dry rubber content index were estab-lished respectively.The maximum concentration of ethephon,1-MCP and CYS were 0.15%,1.08%and 0.41 g/L,re-spectively.The optimized orthogonal test method can effectively calculate the threshold of the regulator and provide theo-retical and practical guidance for the subsequent experiments.关键词
橡胶树/乙烯利/1-甲基环丙烯/阈值/相关分析Key words
Hevea brasiliensis/ethephon/1-methylcyclopropene/theshold/correlation analysis分类
林学引用本文复制引用
刘明洋,杨洪,樊松乐,郭冰冰,代龙军,WITTAYA Prommee,王立丰..乙烯利调控橡胶树胶乳产量和品质的阈值分析[J].森林工程,2025,41(3):538-545,8.基金项目
海南省重大科技计划项目(ZDKJ2021004) （ZDKJ2021004）
中央级公益性科研院所基本科研业务费专项(1630022024004). （1630022024004）
