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第529章 推广杂交小麦(十五)(2 / 2)

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他拿起一张放大的病虫害图片,展示给农民们看:“这是小麦蚜虫,它们会吸取小麦的汁液,导致小麦生长不良。防治方法有很多,比如使用黄色粘虫板,蚜虫对黄色有很强的趋光性,会自动飞到粘虫板上被粘住。”

农民们听得津津有味,不时发出惊叹声。一位老农举手问道:“张教授,要是蚜虫数量太多,粘虫板不够用怎么办?”

张教授微笑着回答:“那就可以使用化学农药,但要注意用量和时机,避免对环境造成污染。”

农民们围坐在张教授周围,个个神情专注,眼神中透露出对知识的渴望。

张教授站在简易的讲台前,手中拿着教具,声音温和而坚定,他正详细讲解着小麦病虫害的防治方法。

“乡亲们,这小麦锈病可是个麻烦事,一旦发病,麦穗上的籽粒就会变得干瘪。”张教授拿起一张病叶,展示给农民们看,“大家看,这叶片上的红褐色斑点,就是锈病的典型症状。”

农民们纷纷凑上前,伸长脖子,仔细观察着病叶。

一位中年农民皱着眉头,轻声问道:“张教授,这锈病怎么治啊?我们这儿去年就有几块地发病,损失了不少。”

本小章还未完,请点击下一页继续阅读后面精彩内容!张教授点了点头,眼中闪过一丝同情:“防治锈病,关键在于提前预防。大家要在小麦抽穗期,及时喷洒杀菌剂。而且,要选择抗病品种,从源头上减少病害的发生。”

农民们听得认真,不时地点头。一位年轻农民举起手,兴奋地说:“张教授,我听说有种生物防治法,用瓢虫吃蚜虫,这方法靠谱吗?”

张教授微笑着点头:“这方法很环保,也很有效。瓢虫是蚜虫的天敌,可以在田间释放瓢虫,让它们自然捕食蚜虫。不过,这种方法需要提前准备,确保瓢虫的数量足够。”

周围的农民们听后,纷纷交头接耳,讨论着如何在自家田里尝试生物防治。

一位老农感慨道:“以前我们只知道用农药,没想到还有这么好的自然方法。这下可好了,既省钱又环保。”

张教授继续讲解,不时地用教具演示,让复杂的农业知识变得通俗易懂。

农民们时而点头,时而皱眉,时而发出惊叹,现场气氛热烈而活跃。

每个人都在为能学到实用的知识而兴奋不已,他们知道,这些知识将直接影响到自家麦田的收成。

培训结束后,大家围在张教授身边,久久不愿离去。一位年轻的农民感慨地说:“今天学到了好多实用的知识,以后种地心里更有底了。”

除了专家培训,各公社和农场还鼓励农民之间的相互学习。

在一次农闲时,李向明组织了一场经验交流会。会场设在公社的会议室,墙上挂着“农民教农民,技术共分享”的横幅。

几位被推选出来的“土专家”坐在前排,他们都是当地的种植能手。

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