CAJ | 학술논문

开展了不同叶篷对橡胶幼树生长的影响研究，结果表明：剪去部分叶篷使得橡胶幼树顶芽抽长提前或延后，导致顶篷叶的叶片物候发生变化，这种变化因剪去叶篷的位置不同或剪去的叶量多少而不同；剪去叶片对橡胶幼树生长有显著的抑制作用，剪去叶片数越多对茎粗、株高生长的抑制作用越大，但未观测到少量剪叶所致的生长补偿作用，剪叶对生长的抑制作用似乎与剪去大量叶片所致的养分损失和减少的光合面积有关；叶篷对植株生长的影响存在位置效应，橡胶幼树茎粗、株高生长的抑制作用因剪去叶篷的位置（含多个叶篷不同位置的组合）而不同。不同位置的叶篷叶片对茎粗、株高生长贡献率大小不同的原因尚有待于深入研究。研究结果对控制植株生长、叶片保护、叶片修剪等有一定指导意义。图2，表3，参20。
개전료불동협봉대상효유수생장적영향연구，결과표명：전거부분협봉사득상효유수정아추장제전혹연후，도치정봉협적협편물후발생변화，저충변화인전거협봉적위치불동혹전거적협량다소이불동；전거협편대상효유수생장유현저적억제작용，전거협편수월다대경조、주고생장적억제작용월대，단미관측도소량전협소치적생장보상작용，전협대생장적억제작용사호여전거대량협편소치적양분손실화감소적광합면적유관；협봉대식주생장적영향존재위치효응，상효유수경조、주고생장적억제작용인전거협봉적위치（함다개협봉불동위치적조합）이불동。불동위치적협봉협편대경조、주고생장공헌솔대소불동적원인상유대우심입연구。연구결과대공제식주생장、협편보호、협편수전등유일정지도의의。도2，표3，삼20。
After the study of the influence of different leaf-umbrella on the rubber sapling growth , we got some conclusions as fol-lows.1.Cutting some leaf-umbrellas make the bud growth of the top of rubber sapling is brought earlier or postponed , leading to some changes of leaf phenology of top leaf-umbrella leaves.These changes are different , for the cutting leaf-umbrella position and the area of leaves are different.2.Cutting the leaves will limit the rubber sapling growth obviously .The more leaves you cut ,the more limitation for the growth of stem diameter and sapling height .3.However,we haven’ t found any compensatory growth from cutting few leaves .It seems that the growth limitation from cutting leaves is related to the nutrition loss and decrease of photosynthetic area because of the vol -ume of leave cutting.4.Leaf-umbrella have an influence for the position of the growth of the sapling .The growth limitation for rubber sapling’ s stem diameter and sapling height is depend on the different cutting position , including many groups with different leaf-um-brella.The exact reason for the degree of the growth limitation on the stem diameter and sapling height from the different cutting leaf -umbrella leaves position is still subject to further study .5.Above all, these conclusions has some significant instructions on the growth control of the plants , the leaves protection and leaves shaving .