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Several major components of the green / agricultural revolution

2020-05-20 来源: 51Due教员组 类别: Essay范文

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下面51due教员组为大家整理一篇优秀的代写范文,供大家参考学习。这篇文章讲述的是当谈到绿色/农业革命时,必须提到它的几个主要组成部分,主要包括以下内容:农业大学,土地所有权合并,命令区域开发(CAD),农业机械化,化肥和农药,灌溉面积土地,耕地,植物的高产品种(HYV),机械,农村电气化,农业信贷供应,农村道路和市场营销。

Several major components of the green / agricultural revolution

When it comes to the green/agricultural revolution, several major components of it have to be mentioned, which mainly include the below ones: agricultural universities, consolidation of holdings, command area development (CAD), farm mechanization, fertilizers and pesticides, irrigation surface and ground, land under cultivation, high-yielding varieties (HYV) of plants, machinery, rural electrification, supply of agricultural credit and rural roads and marketing.

After listing the various primary components of the green/agricultural revolution, the environmental costs and concerns of them will follow. Detailed speaking, those major components are inter-related with one another and they depend heavily on each other. For instance, high-yielding varieties (HYV) of plants will be determined by the use of fertilizers and it will also be detrimentally influenced by pest attacks and growth of useless weeds. And they have to grow with the prerequisite of ample supply of water. Moreover, the shorter maturing periods allows the farmers to gain more than one crop from the same piece of land within a year, which calls for the necessity to speed up the harvesting operations. At the same time, it requires mechanism of farming. If the farmers would like to make the optimum use of the farm inputs, they need to know what, when, where, why and how much of each for which there is enough scope.

As for the major human impacts on the carbon, phosphorus and nitrogen cycles, what has to be pointed out is that human will really exert significant impacts on the carbon, phosphorus and nitrogen cycles. To put it more specifically, we all know that we humans will inhale oxygen and then exhale carbon dioxide in our process of breathing and plants will inhale carbon dioxide and exhale oxygen, which can be regarded as the main part of the carbon cycle. And it is obvious that humans can easily impact the carbon cycle because of their burning coal, gas and oil, leading to the increase emissions of carbon dioxide in the due time.

It is known that plants take in phosphorus from the soil for nutrition so that humans have them for meals or eat some other animals whose chemical makeup includes phosphorus will influence the phosphorus cycle. The fact that phosphorus is identified in the sediment of human urine can be an effective example of humans’ impacts on the phosphorus cycle.

The nitrogen cycle will be affected by humans whenever fertilizer is used to farmland for the growth of crops, which will add nitrates to the soil. And the nitrates will be deposited and transported in the nearest body of water when the soil erodes. In addition, humans can influence the nitrogen cycle when they either have them for meals or they consume other animals that whose chemical makeup includes nitrogen.

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