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首页> 外文期刊>Tropical Grasslands >Effect of cutting interval and cutting height on morphogenesis and forage accumulation of guinea grass (Panicum maximum)
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Effect of cutting interval and cutting height on morphogenesis and forage accumulation of guinea grass (Panicum maximum)

机译：cutting插距和cutting插高度对豚草形态发生和饲草积累的影响（最大草）

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摘要

Response patterns of guinea grass to defoliation were assessed over a 4-month period at the Federal University of Vifosa using a randomised complete block design with 3 replications. The treatments were combinations of cutting height (25 and 50 cm) and cutting interval (2, 3 and 4 new leaves per tiller) and were arranged in a 2 x 3 factorial design. Morphological and structural characteristics, regrowth period and forage accumulation were assessed. The average regrowth period was similar for the cutting intensities assessed. Stem elongation, final leaf length and number of live leaves per tiller were greater with the 50 cm cutting height. Increasing the number of leaves/tiller at harvest increased period between harvests, canopy height at harvest and stem relative to leaf elongation, causing reduction of the leaf:stem ratio. It appears that cutting at the 3-leaf stage at 25 cm height would be the most appropriate for Mombasa guinea grass. However, a more practical standard would be cutting at a canopy height of about 90 cm. Longer-term studies are needed to confirm these preliminaiy findings, along with feeding studies to determine production benefits from this regime.
机译：在Vifosa联邦大学，使用3次重复的随机完整区组设计，评估了4个月内豚鼠对落叶的反应模式。这些处理是切割高度（25和50厘米）和切割间隔（每个分2 2、3和4片新叶子）的组合，并按2 x 3因子设计进行布置。评估了形态和结构特征，再生期和饲料积累。所评估的伐木强度的平均再生期相似。切条高度为50 cm时，茎的伸长率，最终叶长和每个分er的活叶数都更大。收获时增加叶/分iller的数量，增加收获之间的时间间隔，收获时的冠层高度和茎相对于叶片伸长的比例，从而导致叶片：茎比降低。看来，在三叶阶段以25厘米高的高度切割最适合蒙巴萨豚鼠草。但是，更实际的标准是在约90厘米的树冠高度处进行切割。需要长期的研究来确认这些初步的发现，还需要进行饲喂研究以确定这种方式的生产效益。

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