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植保素
时间：2021-08-29 16:05
关键词：
植物的抗性生理
农学
答案解析
<p> 是寄主被病原菌侵入后产生的一类对病菌有毒的物质。</p>
相关问题
boost的意思是:help or encourage to increase or improve
eloquent的意思是:fluent or persuasive in speaking or writing
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
植保素
一年中树木生理活性弱(抗性最强)的时期是( )。
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自然休眠是由于植物的生理过程或植物的()决定的。
园艺植物病虫害的防治一定要遵循“以防为主，综合防治”的植保方针，首先采用（）防治、（）防治、（）防治方法，把药剂防治作为辅助手段。
寄主植物抗病性与病原物致病性之间没有特异性相互作用的称为水平抗性。
Mainly east 3 or 4 partly cloudy to overcast occasional rain（）slowly south moderate or good.
（）any case or suspected case of quarantinable disease，or any case of eruptive disease or any death be discovered，the local quarantine officer must be notified immediately．
Should any case or suspected case of quarantinable disease，or any case of eruptive disease or any death be discovered，the local Quarantine Officer must be（）immediately.
Masters are（）solely responsible for all damages or accidents of whatever kind resulting from the navigating or handling of their vessels by day or by night.
If he is a common carrier，he is absolutely responsible to the owner of the goods carried （）any loss or damage to them unless caused by an Act of God or the Queen’s enemies，or the inherent vice in the goods themselves，or the negligence of the owner of the goods，or a general average sacrifice.
系统中雷达状态包括Unknown、Operational（or ON）、Failed（or OFF）、Detached。
Owners are to be responsible for loss of or damage to the goods or delay in delivery of the goods only in case the loss，damage or delay has been caused by the improper or negligent stowage of the goods．This means that（）.
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