橡胶树木质部注射乙烯利增产刺激方法初探

用直接注射和挂瓶渗透两种方式,在海南红光农场进行了多种强度的橡胶树木质部乙烯利刺激割胶试验。结果表明：用直接注射的方式,在43龄和20龄PR107橡胶树上,要获得相同的产量,乙烯利的剂量分别是常规割线涂抹方法的1.6和0.7倍;用挂瓶渗透的方式,在20年树龄PR107橡胶树上,根据营养液的种类和浓度的不同,乙烯利的需要量不同;挂瓶渗透刺激割胶的重要特点是每刀的产量较均匀;两种方式都表现为随着乙烯利用量的加大,短期内胶水产量明显增加。

Effect of Xylem Stimulation with Ethrel on Latex Production of Hevea brasiliensis

Experiments were conducted on Hevea brasiliensis xylem stimulation with ethrel of different intensities by means of direct injection and penetration at Hongguang Farm of Hainan Province.The results indicated that in order to gain the same production by means of direct injection,dosage of ethephon must be 2 times that of conventional method of application to the cut for the 43-year-old trees of PR107,and 1 time for 20-year-old trees.By means of penetration with bottles,dosage of ethephon needed for 20-year-old rubber trees of PR107 changed with the kind of nutrition liquid and its concentration.The significant character of penetration was that the productions of different tapes were uniform.Latex productions of the above two means were both increased with the dosage increase of ethephon in a short-time.