橡胶树种植定标的指标有哪些?

2025-02-16 03:45:26
推荐回答(1个)
回答1:

基行

又称基线。十字定标时最先确定的植行。基行是确定其余植行的参照行。等高定标在确定基线时也可以考虑以园内坡度约大于该林段的平均坡度、最具代表性的坡位、地界宽度比较宽处的植行为基行,并以此调整标点位置。

植行

由两株以上株间相邻的植株组成的一行树。包括正常植行和断行、插行。由于断行、插行在生产管理上会带来诸多不便,因此在林段设计时可通过调整株距等手段尽量避免或减少断行和插行。

断行

由于地形、地物等原因中断的植行。一些植行因有大障碍物(如巨石、沟坎、坟墓群)等阻隔,或因地形变化导致与相邻的两植行间的行距不足既定设计行距的2/3而被中断。后者有时可以通过调整包括相邻植行在内的株距来避免断行。

插行

在两植行之间增加的植行。在坡度变化较大的丘陵地的平缓处,当两植行间的行距大于既定设计行距,且大于既定设计行距的1.5倍并可连续种植株数≥5株时,在该两植行的中间插入一植行。由于插行不便于管理,因此也可通过调整包括相邻植行内的株行距来避免插行。

植距

植株(中心点)之间的相互间距。分行距和株距。采用何种植距与拟采用的种植形式,行间土地利用模式和拟开垦地坡度,环境以及计划投入资金量等有关。

行距

相邻两植行之间的间距。行距范围为5~16m。在国内往往采用较大的行距,主要考虑有利于间作,提高胶园抗风能力,保障茎干基部有一定光照等。

株距

同一植行的相邻两植株之间的间距。生产上的株距一般为2~3m,株距太小(1.8m或以下)时,橡胶树茎干会变成圆形,导致树皮厚薄不一,进而割胶易伤树;根颈处光照不足,会发生烂脚病等寒害。而株距太大(3m以上)时,会降低胶工割胶工作效率。

植穴

种植苗木用的土穴。一般橡胶苗的植穴规格为上宽深下宽为80cm50cm30cm。对于疏松肥沃的土地而言,植穴规格大小对橡胶树生长影响不大,但对于较为贫瘠的或表土层很浅的土地来说,植穴大有利于植株生长。因此,表土层薄的地块曾使用爆破法开挖大植穴。

挖(植)穴

以定标点为中心按一定规格要求开挖的植穴。生产上挖植穴往往结合修建环山行同时进行,一般先将表土集中在拟挖植穴旁以备回土,从植穴中挖出心土堆于环山行外侧。

植沟

种植苗木用的壕沟。当株距较小时,或需要大量施入基肥时植穴改为植沟。除了沿着植行的方向按统一的宽、深度要求开挖的壕沟外,其余的同挖植穴。挖植沟往往采用机械作业。

防牛沟

用于阻止牛、羊等动物进入胶园的壕沟。一般挖在胶园外围,宽约1m,深1~1.2m,挖出的泥土堆在靠胶园一侧的壕沟边上。

(防牛)围栏

用于阻止牛、羊等动物进入胶园的围栏。一般修建在胶园外围,高1.2~1.5m,木桩铁丝或水泥桩铁丝结构。

天沟

又称截水沟。建造于低山丘陵地胶园上方坡面上,用于拦截来自胶园上方集水面积较大的地面径流并将其引到胶园外的排水沟。

泄水沟

建造在胶园下方,用于收集胶园内地面径流避免直接冲击下方农田的排水沟。

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