毕业论文代写：转基因生物影响
毕业论文代写：转基因生物影响。转基因生物带来了一场粮食生产革命，提高了土地生产率，使产量翻了一番(Watson和Preedy XII)，它对粮食安全，特别是发展中国家的粮食安全有着重大影响。关于在农业中广泛使用转基因作物会产生“意想不到的”影响，人们有几个担忧。接下来毕业论文代写专家将分析讨论下转基因生物影响。
转基因作物的独特卖点要么是抗除草剂，要么是抗虫。虽然最初的论点是杂草或其他不受欢迎的植物不会很快进化或适应这些修改，但很快就发现，新的和更具抗性的农业杂草形式的发展对农业生产力和自然生物多样性的损失产生了不利的影响(Schütte，它既影响了当地的本土植物，也影响了动物，特别是节肢动物(如有助于授粉的蜜蜂等昆虫)。即使在除草剂的使用方面，虽然这些植物是耐除草剂的，除草剂的使用在最初几年有所下降，但最终杂草适应了除草剂的使用。重复使用草甘膦(使用的最普遍的除草剂)而不改变使用模式会导致产生对这种化学物质具有抗性的杂草(Bonny 43)。鉴于此，杂草管理是困难的，农民不知道除草剂和其他杂草驱避剂的特性(邦尼40)。在转基因作物广泛应用后，如何避免杂草在农业生产中泛滥已成为一个棘手的问题。
此外，与旨在保持土壤健康和肥力的混合种植或间作等可持续农业做法相比，这些做法是不可持续的(Schütte, Eckerstorfer和Rastelli 5)。这也导致了一些作物种植中更高的劳动力需求。
事实证明，对转基因植物的吹嘘毕竟是一种夸张，即使这些植物的生产力在长时间考虑后并不显著高。本质上，转基因作物被证明更注重提高农场水平的生产力，在整合诸如增强生物多样性、环境保护、减少劳动力使用或更好地管理杂草等外部因素方面表现得非常失败。
Genetically Modified Organisms (GMOs) have brought about a revolution in food production in terms of increased productivity of land and have doubled the yield (Watson and Preedy XII). It has had significant bearings on food security especially in the developing world. There have been several concerns about the “unintended” effects of extensive use of GMO in agriculture.
The unique selling proposition of the genetically modified crops was either herbicide resistance or insect resistant. While the initial argument was that weeds or other unwanted plants would not evolve or adapt to these modifications very fast, it was soon found that new and more resistant forms of agricultural weeds developed contributing adversely to both agricultural productivity and loss of natural biodiversity (Schütte, Eckerstorfer and Rastelli 5). It impacted both the indigenous plants of the area and the animals specially the arthropods (insects like bees which facilitate pollination). Even in terms of herbicide use, while the plants were herbicide tolerant and the use of herbicide declined in the first few years, eventually, the weeds adapted to the herbicides. Repeated use of Glyphosphates (the most popular herbicide used) without any change in the usage pattern led to generation of weeds which were resistant to the chemical (Bonny 43). Given that, weed management is difficult and farmers are unaware of properties of herbicides and other weed repellents (Bonny 40). It has become a difficult proposition to escape the infestation of weeds in agriculture post extensive usage of GM crops.
Furthermore, these practices are not sustainable with sustainable agricultural practices like mixed cropping or intercropping which is designed to retain health and fertility of the soils (Schütte, Eckerstorfer and Rastelli 5). It led to higher labor demand in several crop cultivations as well.
It turns out that the boastings of genetically modified plants after all were more of a hyperbole for even the productivity of these plants that were not significantly high when considered over a long period of time. In essence, GM crops have turned out to be more focused on increasing farm-level productivity and have failed magnificently in integrating externalities such as enhancement of biodiversity, environmental protection, reduced use of labor or even better management of weed.
以上内容就是毕业论文代写专家对转基因生物影响的分析讨论。若要问毕业论文代写哪家更专业可靠?论文代写推荐留学生选择美国论文代写AdvancedThesis服务平台。因为其服务公司拥有专业资质的论文写手团队，保障论文原创，并使用权威的抄袭检测系统，让留学生们轻松应对英语论文写作并创作出专属个人的优秀论文!除此之外，还为留学生提供专业的硕士论文代写、毕业论文代写、essay代写等服务!留学生可以放心选择美国论文代写AdvancedThesis服务!
