【摘 要】
：
杜梨砧苗断根技术杜梨砧苗嫁接后及时断根，可以促发侧根，使根系发达，提高栽植成活率。具体方法是：在杜梨苗嫁接成活后，用断根铲（或锋利铁锹）距苗木基部２０厘米处，与主根成４５度角用力下铲，下
论文部分内容阅读
杜梨砧苗断根技术杜梨砧苗嫁接后及时断根，可以促发侧根，使根系发达，提高栽植成活率。具体方法是：在杜梨苗嫁接成活后，用断根铲（或锋利铁锹）距苗木基部２０厘米处，与主根成４５度角用力下铲，下铲深度３５厘米左右，便可将主根切断。断根后及时浇水、中耕，过半月...
Du pear rootstock cut off the rootstock technology Pear rootstock grafted promptly after the root can be induced to promote lateral root development so as to improve the survival rate of planting. The specific method is: in the pear grafting survival, root shovel (or sharp spade) 20 cm away from the base of nursery stock, with the main root into a 45-degree angle under the shovel, shovel the depth of about 35 cm, you can cut the main root. Watering in time after cutting roots, cultivator, over half a month ...
其他文献
请下载后查看，本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
Background: Suicide in the prison population is often hushed up and may be discovered while assessing general suicides from data obtained from the police.Se
一、智能网概述 智能网依靠No.7信令网和大型集中数据库的支持,实现将网络的交换功能与控制功能相分离。它一般由业务交换点、业务控制点、智能外设、业务管理系统、业务生
随着电子及微电子技术的迅猛发展,世界各大手机制造商推出的手机功能也越来越多、操作越来越复杂,而一次性手机却以其低廉的价格、简洁的功能和使用的便利进入了我们的生活
There has been healthy debate within Australia and internationally about the impact of media coverage about suicide on individuals and communities.There has
针对农村饮水安全水质检测中心的建设目的和主要任务,从组织架构和人员职责、实验室检测要求、实验室日常维护管理、运行机制管理等方面进行规范管理。
For rural drinking
Objective: The present study aimed to compare the prevalence of suicide ideation among Chinese graduate students from the year of 2007 through 2010 and expl
目的:了解马鞍山城区6月龄婴儿骨矿发育情况及影响因素。方法:根据知情同意原则,在某妇幼保健院儿童保健门诊对2012年出生的1 366名婴儿进行人体测量、问诊和骨密度(BMD)测量