【摘 要】
：
烟苗移栽时间对田间烟株的生长和烟叶品质有显著的影响,近年来,越来越多的证据和报道表明,烟苗移栽时间和田间烟草病害的发生也有密切的关联,烟苗移栽时间推后加剧了田间烟草
论文部分内容阅读
烟苗移栽时间对田间烟株的生长和烟叶品质有显著的影响,近年来,越来越多的证据和报道表明,烟苗移栽时间和田间烟草病害的发生也有密切的关联,烟苗移栽时间推后加剧了田间烟草青枯病的发生.因此,各烟区也在积极探索通过烟苗移栽时间前移控制烟草青枯病的防控措施,但目前对于烟苗移栽时间和烟田病害发生关系的研究和报道还较少.本文主要针对烟苗移栽时间的确定原则以及与田间病害发生的关系进行了总结和梳理,在确定各烟区烟苗移栽期方面提出了相关建议,旨在帮助各烟区正确合理地确定烟苗的移栽时间,提高病害防控效果,帮助烟农增产增收.
其他文献
The neon flying squid, Ommastrephes bartramii, is a species of economically important cephalopod in the Northwest Pacific Ocean. Its short lifespan increases th
高校的医学文献检索课以培养学生的信息意识、传授基本知识、训练信息获取能力为特点,在人才培养中担当着重要作用.但是我国高校医学文献检索课的发展现状却不容乐观,远远跟
A 9-week feeding trial was conducted to investigate the effects of dietary carbohydrate to lipid ratio(CHO:LIP) on the growth performance and feed utilization o
目的:在内科临床实习中探讨以问题为基础的循证医学教学方法的应用效果.方法:在20卫～2003学年,将在中山大学附属第三医院内科临床实习的学生随机分成实验组(30人)和对照组(30
In present study, the inbreeding depression (ID) of growth and survival of Manila clam (Ruditapes philippinarum) was investigated at larval and juvenile stages.
Conotoxins belong to the large families of disulfide-rich peptide toxins from cone snail venom, and can act on a broad spectrum of ion channels and receptors. T
The information of trophic relationship is important for studying the Southern Ocean ecosystems.In this study,three dominant krill species,Euphausia superba,Thy
Propylene glycol alginate sodium sulfate-loaded nanoparticles(PSS-NP)has been shown potential to prevent the microvascular endothelial injuries caused by diabet
近年来,不断有关于烟草靶斑病暴发成灾的报道,该病严重发生时能对烟叶生产造成极大影响,严重挫伤烟农生产积极性,威胁烟草行业的健康发展.本文介绍了靶斑病的症状、发生条件