首页/ 题库 / [问答题]潜叶蝇的为害特点和防治方法?的答案

潜叶蝇的为害特点和防治方法?

问答题
2022-03-12 17:55
查看答案

正确答案

1、为害特点:幼虫在叶片组织内潜食,使叶肉内形成弯曲图画似隧道,随幼虫生长隧道宽大,发生严重时全叶枯萎。高湿时隧道上腐生灰霉病菌。
2、防治方法:(1)农业防治第一茬蔬菜收获后及时携出田外进行密封高温堆肥。育苗温室与生产温室隔开,注意检查下部叶,摘除有隧道叶片以压低冲口基数。(2)诱杀越冬代成虫用甘薯或胡萝卜煮液为诱饵,加0.05%敌百虫(美曲磷脂)为毒剂,在越冬代成虫羽化期田头边行分散喷洒。(3)药剂防治发现叶片上有隧道立即喷药。药剂可用灭杀毙(21%増效氰。马乳油)8000倍液、2.5%溴氰菊酯3000倍液、80%敌百虫(美曲磷脂)可溶性粉剂1000倍液等,每隔7-10天1次,连治2-4次。在保护地开花期为兼治灰霉病,混用50%速克灵可湿性粉剂1000倍液。成虫羽化期还可用敌敌畏烟剂熏杀成虫。防治重点在苗期和开花前。药剂的施用最好采用不同单剂交替使用,以免增强害虫的抗药性。


试题解析

相关题目
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.

水稻潜叶蝇为害水稻的方式和为害状是()。
取食水稻()是水稻褐飞虱的为害特点。
蔬菜地膜覆盖栽培的效果主要表现在()。
蔬菜栽培方式的确定依据是()。
主要蔬菜栽培制度有()。
水稻农机农艺融合方面,推广大棚、无纺布育秧和“浅、湿、干”旱育稀植等节水栽培技术的优势区是()。
甜菜夜蛾的为害特点是什么?
小菜蛾的为害特点是什么?
菟丝子的为害特点和防治要点。
地下害虫的为害特点和防治方法?
我国著名的漳州水仙是用漳州水仙栽培水田方法栽培的,而上海的崇明水仙是用一般栽培()方法栽培的。
()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.
系统中雷达状态包括Unknown、Operational(or ON)、Failed(or OFF)、Detached。
The carrier is liable for loss of or damage to the goods or delay in delivery caused by fire,()the claimant proves that the fire arose from fault or neglect on the part of the carrier,his servants or agents.
Shutdown price(or point,or rule) 停业价格(或停业点、停业原则)
广告位招租WX:84302438

免费的网站请分享给朋友吧