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来源：百度知道 编辑：UC知道 时间：2024/09/28 17:54:41
沙漠化对农业的危害特别大。每年4到5月正是春播季节，在沙漠化地区，往往是种子和肥料被吹走，幼苗被连根拔出，土壤水分散失，禾苗被吹干致死或被掩埋。有的地方要反复补救，甚至误了农时。
沙漠化引起的草场退化，使适于牲畜食用的优势草种逐渐减少，甚至完全丧失。牧草变得低矮、稀疏，产量明显降低，草场载畜能力大为下降。
沙漠化造成河流、水库、水渠堵塞。黄河年均输沙16亿吨，其中就有12亿吨来自沙漠化地区。全国每年大约有5万多公里的灌渠常年受风沙危害。
沙漠化在一些地区造成铁路路基、桥梁、涵洞损坏，使公路路基、路面积沙，迫使公路交通中断，甚至使公路废弃。沙漠化导致的沙尘天气，影响飞机正常起飞和降落。
风沙活动破坏通讯、输电线路和设施，由此产生的灾害威胁居民安全。
Data show that desertification is a sharp reduction in our effective use of the land. As a result of desertification in many parts of the trend has led to land degradation, destruction of soil structure, soil nutrient loss. Soil fertility and the natural recovery will take several decades or centuries or even thousands of years time. If the employment measures for the restoration of soil fertility, the need for input is difficult to calculate.
Against desertification in agriculture particularly hard. 4 per year to May is the season of spring, desertification in the region, often the seed and fertilizer were blown off, pull out the seedlings were uprooted, loss of soil moisture, drying He Miao died or been buried. Some local remedies should be repeated, and even missed the farming season.
Desertification caused by the degradation of grasslands, livestock for food so that the advantages of grass gradually reduce or even completely lost. Grass has become low, sp