共查询到15条相似文献,搜索用时 171 毫秒
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气刺微割技术是近十几年来兴起的一种全新采胶技术。连续13年在PR107品系上进行的气刺微割试验。结果表明:气刺微割在年割胶刀数比对照少10%的情况下,产量稍比对照的高;死皮等副作用不明显,证明该技术是安全的。 相似文献
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4年的气刺微割试验结果表明,气刺微割能明显提高产量和割胶劳动生产率,降低干胶含量,而死皮等副作用不明显。采用气刺微割后,必须控制增产幅度,以保持胶树的长期高产稳产。 相似文献
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比较分析气刺微割技术和常规割胶技术下老龄更新胶园胶树的产量、干含、死皮、树皮消耗、劳动强度、经济效益等指标,结果显示前者比后者更加高效。并在此基础上提出几个气刺割胶技术在生产上应用的建议。 相似文献
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气刺微割技术是应用在巴西橡胶树采胶生产上的一项新技术,核心是乙烯气体高效刺激技术,刺激强度为每周期施用30 mL乙烯,每月3个周期,进行高部位树皮短割线采胶。连续10 a的试验结果表明,气刺微割使得割胶效率大大提高,胶乳干胶含量保持正常水平,树皮产胶解剖结构、功能正常。长流胶是气刺微割获得高产的重要保证。气刺微割是一种安全、高效和可持续的橡胶树采胶技术。 相似文献
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试验在18割年的GT1品系上进行。从产量、干胶含量、树皮消耗、割胶速度、死皮率等性状综合分析气刺微割技术在GT1品系应用上的优越性和存在的不足。 相似文献
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报道云南最早进行橡胶树微割采胶试验的结果。结果表明,微割采胶的株产、株次产都高于对照常规割胶,年平均净增产率为5.78%,干胶含量比对照低1~4个百分点;割胶速度为对照的2~3倍;耗皮量为对照的20%~25%;累计死皮率为4.04%,低于对照(5.91%),为常规割胶的68.36%,胶乳生理参数保持正常水平。 相似文献
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调查西双版纳RRIM600和GT1两个品种橡胶树的不同割龄段死皮树的症状,根据排胶、割线颜色、树体状况三个方面的症状表现,死皮病典型症状可归纳为点状排胶或割线干涸,割线褐色、暴皮三种表现,其中RRIM600死皮树表现割线干涸和点状排胶的分别为41.7%和45.3%,割线表现内褐、褐皮平均分别为42.7%和35.2%,树体多数表现为块状暴皮,平均达44.8% GT1死皮树症状以割线干涸为主,占61.9%,其次为点状排胶,占23.9%,割线表现为褐皮、内褐的分别占29.5%和44.9%,树体多数表现为短裂纹状暴皮,平均达34.1%。文章还对死皮病病程、诱因进行探讨。 相似文献
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In Thailand, the continuous decrease in the size of rubber plantations has led to the general adoption of intensive tapping systems which may lead to over harvesting, high rates of tapping panel dryness (TPD), short life-cycles of the plantations, and low labour productivity. In Thailand, farmers use a half-spiral downward tapping system (S/2) or a one third-spiral (S/3) with a tapping frequency of once two days (d2) or more. To increase productivity, it is difficult to reduce tapping frequencies, even with ethylene stimulation, as this would result in days without work for tappers. The purpose of this study was to characterize the behaviour of the Hevea latex yield under the double cut alternative tapping system (DCA). The aim was ensure the long-term sustainability of latex yield by increasing the time required for latex regeneration between two tappings through splitting this high tapping intensity (100% or above) into two different tapping cuts tapped alternately (S/2 d47d7(t,t). Over a period of 10 years, compared to a single cut tapping system (S/2 d2) of equivalent intensity, DCA increased cumulative rubber production by 9%. Ability of the trees to produce more latex under DCA was related to the sucrose and inorganic phosphorus contents of the latex cells in each tapping panel. DCA produced metabolic activity more favourable to yield during the first 10 years of tapping. But DCA also resulted in higher TPD rates, a sign of a metabolic dysfunction of the productive bark. DCA is a new tapping system. Further research is required to optimize the use of the DCA strategy. Such research will lead to new advances in our knowledge of the physiology of the rubber tree, mainly at the trunk scale. 相似文献