论文部分内容阅读
在诸多的草坪养管措施中,修剪是工作量大而重要的一个环节。本文综合几点剪草机使用须知,供草坪养管者参考。 (一)国外均采用1/3修剪法,即每次修剪仅剪去禾草垂直生长高度的1/3,留下2/3的草高。如超过1/3,会因叶面积的大量减少而使植物光合作用的能力大大下降,制造营养的能力亦降低。依据禾草的生长特性及1/3修剪法,推荐几种草种正常修剪的高度值(见表)。研究表明:剪下的短草叶干重量中,常含有3～5％的氮及大量的磷、钾,尤是施肥后剪下的短草叶,更应让其留于草坪进行分解,以增加土壤肥力。 (二)对同一块草坪来说,每次剪草不应总朝一个方向。如这次是东西向的,下次就改用南北向,再下次又调换一个方向,……。因为交错方向修剪可减少条纹而使草坪平
In many lawn raising measures, pruning is a heavy workload and an important part. This article combines the use of lawn mowing points for lawn raising and raising of the reference. (1) 1/3 foreign pruning method is adopted, that is, each pruning only cuts the height of vertical growth of grass 1/3, leaving 2/3 grass height. If more than 1/3, due to a large reduction in leaf area and plant photosynthesis greatly reduced the ability to make nutrition is also reduced. According to the growth characteristics of grass and 1/3 pruning method, we recommend the normal pruning height of several grass species (see table). Studies have shown that the short leaf dry weight of the cut grass often contains 3 to 5% of nitrogen and a large amount of phosphorus and potassium, especially the short grass cut after fertilization, and leaves the lawn to decompose Increase soil fertility. (B) of the same piece of lawn, each should not be cut grass in one direction. If this is an east-west course, the next time you switch to north-south direction, then another direction will be changed next time. The lawn is flattened because the stripes are cut in a staggered direction