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随着人口增加,以及社会的发展和进步,人们对粮食和食品数量与质量的要求日益提高。据联合国粮农组织(FAO)报告,到2050年,全球食品需求量将比现在增加70%~110%。作物产量要提高,一方面依赖提高单产,另一方面可以通过扩大种植面积来实现。但是,作物在整个生命过程中会受到干旱、高温、冻(冷)、盐碱以及病虫等危害,影响作物产量。就种植面积而言,我国的工业和住房建筑的发展可能导致宜耕农田面积下降。因此,将来在不适宜耕种的土地,如沙漠、贫瘠、盐碱等不
With the increase of population and the development and progress of society, the quantity and quality of food and food are increasingly demanding. According to the UN Food and Agriculture Organization (FAO), global food demand will increase by 70% to 110% by 2050. Crop production needs to be increased, on the one hand relying on increased yields, on the other hand by expanding the area under cultivation. However, the crops are endangered by drought, high temperature, freezing (cold), saline-alkali, pests and diseases throughout their lives and affect the crop yield. In terms of plantings, the development of our country’s industrial and housing construction may result in a decline in the area of paddy fields. Therefore, in the future not suitable for cultivation of land, such as desert, barren, saline and so on