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苗圃所培育的苗木,少则需几年

网址:www.jiazanmiaomu.com  2021-05-18  作者:admin    阅读:

苗圃所培育的苗木,少则需几年,如花灌木的一些种类。多则需十几年甚至几十年,一般三、四年生以下的苗木,不需要整形,修剪也较少,为了节约养分,一般是剪掉花朵或花序。三、四年生以上的大苗需要整形,更需要修剪。主要目的是培养具有一定树体结构和形态的大苗,有的大苗或盆栽大苗需要培养成带花或带果的大苗。要达到这些要求必须对苗木进行整形和修剪。
Nursery nursery seedlings, at least a few years, such as some species of flowering shrubs. Generally, seedlings under three or four years old do not need to be reshaped and pruned less. In order to save nutrients, flowers or inflorescences are usually cut off. 3、 Seedlings over four years old need to be reshaped and pruned. The main purpose is to cultivate large seedlings with certain tree structure and shape. Some large seedlings or potted seedlings need to be cultivated into large seedlings with flowers or fruits. To meet these requirements, the seedlings must be reshaped and pruned.
一、苗木修剪的意义
1、 Significance of seedling pruning
通过整形修剪可以培养出理想的主干,丰满的侧枝,圆满、匀称、紧凑、牢固、优美的树形。
The ideal trunk, plump lateral branches, perfect, symmetrical, compact, firm and beautiful tree shape can be cultivated by pruning.
整形修剪可以改善苗木的通风透光条件,减少病虫害。
Pruning can improve the ventilation and light transmission conditions of seedlings and reduce diseases and pests.
整形修剪可使植株矮化。
Pruning can make the plant dwarf.
二、苗木修剪
2、 Seedling pruning
按苗木的生长与休眠时期分为生长期修剪和休眠期修剪,也有叫夏季修剪和冬季修剪的。夏剪是4月至10月,冬剪10月至4月。在南方四季不明显的都叫夏剪。不同的树,种具有不同的生物学特性,特别是物候不同,因此某一树种具体的修剪时间还要根据它的物候、伤流、风寒、冻害等具体分析确定。一般落叶树种适宜冬剪,伤流严重的应早剪或伤流过后再剪,常绿树种既适宜冬剪也适宜夏剪。
According to seedling growth and dormancy period is divided into growth period pruning and dormancy period pruning, also called summer pruning and winter pruning. Summer pruning is from April to October, winter pruning is from October to April. In the south, those that are not obvious in four seasons are called Summer scissors. Different tree species have different biological characteristics, especially different phenology. Therefore, the specific pruning time of a tree species should be determined according to its phenology, bleeding, wind cold, freezing injury and other specific analysis. General deciduous tree species are suitable for winter pruning, severe bleeding should be cut early or after bleeding, evergreen tree species are suitable for winter pruning and summer pruning.

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