相对于化学农药而言,因为绿色种植管理技术充分的结合了多种治理方式,显著的降低了农产品的有毒有害物质的残留量,从而更好地提高了农作物的产量,加少了农业种植对于周边环境的污染情况,更好地促进了农业生产的现代化发展。
参考文献:
[1]李阔,许胤龙.适应气候变化的中国农业种植结构调整研究[J].中国农业科技导报.2017(01)。
从实际情况来看,当前农民的文化素质水平依然较低,所以在农作物的病虫害防治方面,依然没有用药的常识以及长远的眼光,过度看重眼前的利益,完全不管不顾农药过度使用造成的环境污染等问题,只看中眼前的产量以及经济效益。所以在农作物的种植过程中,出现了很多关于化学农药使用导致的问题。
(一)滥用已禁止销售的化学农药。
诸如甲胺磷、滴滴涕、二溴氯乙烷等因为毒性过大而被我国禁止使用的农药,农民无视国家的相关规定,因为其具有较好的***虫效果,所以依然在违规大量使用。对于这些高毒性的农药所造成的环境污染,则持无视的态度。
(二)对于农药的使用不够科学和规范。
农民本身存在文化程度和认知水平不足的问题,所以在农作物出现病虫害的时候,农民便会随便的喷洒农药,这就导致农药的用量也许已经超过了使用标准数倍,但是因为没有实现对症下药,所以导致无法达到所期待的效果,而且害虫本身会快速的产生该农药的抗药性,进而出现害虫数量激增,并且能够***灭害虫的特效药越来越少的情况。
(三)对于农药施用后的安全时间没有概念。
农药的施用势必会出现残留的情况,而随着时间的推移,农作物的农药残留量会逐渐的减少,而这个时间也就是农药所谓的安全时间,不同的农药的安全时间不完全相同,农药包装基本都有标明具体的安全时间,但是为了能够使得农作物可以更快的上市,且农民本身对于农药的安全时间概念的认识就不够深入,所以在作物即将上市的时候,农民依然在喷洒农药,这就导致作物的农药残留量严重的超标,对人体的健康产生了非常严重的威胁。
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Tiger is one of the most valueable animals to human beings today. It is somehow like a cat, but much bigger than it. It lives in the forest, and feeds on small animals.
Nowadays, the number of the wild tiger is becoming small and small. Maybe there will be no tiger any more if people continue cutting the trees, destorying the living environment or hunt the tiger just for the skin. We must stop all these mistakes. We should protect them, because the world without tiger is not a completed one.
Tiger is one of the most valueable animals to human beings today. It is somehow like a cat, but much bigger than it. It lives in the forest, and feeds on small animals.
Nowadays, the number of the wild tiger is becoming small and small. Maybe there will be no tiger any more if people continue cutting the trees, destorying the living environment or hunt the tiger just for the skin. We must stop all these mistakes. We should protect them, because the world without tiger is not a completed one.
Some fish are forced to leave polluted water and are flying in the sky. But unfortunately, air is also so polluted that they have to wear masks. Each of them is crying, “Where is my home?” What a terrible sight!
Mankind has brought so much pollution. Waste is being poured into rivers and seas. Poisons to kill pests in farming and chemicals go into rivers and seas, too. Poisonous gasses from factories also make the air so dirty. The whole balance of nature is being destroyed as a result of our ignorance of the environmental protection.
Personally, man can not live alone on the earth. Should fish die from serious pollution, so would man! It is high time we did something to prevent such a scene from happening.
化学农药因为其效果显著、应用直接、起效迅速以及所需投入较少,所以在农作物的害虫防治方面,一直是广大农民的首选。但是因为化学农药被大量的应用,所以使得害虫逐渐对于农药产生了抗药性,在此情况下,只有继续提升农药的使用量,才能够达到防治农作物害虫的目的,但越来越大的农药使用剂量,对于环境、生态以及人类自身的身体健康都产生了非常严重的影响。
(一)农药残留对环境产生污染。
对作物采用农药***虫的时候,农药种只有很少的一部分作用到害虫身上,起到***虫的作用,绝大部分的农药都会被固定在水源、土壤中,直接严重污染周边的环境。
(二)农药打破周边的生态平衡关系。
农药的应用的确能解决虫害问题,但是在***死相关害虫的.同时,周边有益的动物也会受到严重的影响,甚至会导致部分有益动物在一定区域内灭绝,严重的损害当地的生态平衡。
(三)农药对人类自身健康产生严重危害。
由于化学农药的使用剂量在不断的增加,所以这种对农药的过度使用会导致农作物中残留大量的农药,当浓度高于一定程度后,使用后会直接导致中毒的情况出现。而且上文中所提到的被固定在水源以及植物中的农药,会通过食物链关系逐渐在人的体内富集,逐渐引起人类的多种慢性疾病。
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