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一、辽宁省农业环境面临的主要问题1、人均耕地面积逐年减少,耕地质量下降全省的耕地由于种种原因呈现出逐年减少的趋势,而人口则在增加,人口与耕地矛盾日益突出,人均耕地已由1949年的3.88亩,减少到了1996年的1.54亩,平均每年递减1.27%。已有部分地区的人均耕地面积低于国际规定的耕地危险临界值0.8亩/人。如果这种情况仍得不到缓解,其后果堪忧。全省有相当数量的农民只重眼前利益,片面强调高产,只重用地,不重养生,绿肥及豆科作物等培肥地力的作物种植越来越少;在施肥方面,只重化肥,不重有机肥,导致土壤有机质含量降低,影响了土壤的理化性质,破坏土壤物理结构,耕地保水保肥能力下降,自然生产力降低。
I. Main Problems Facing Agricultural Environment in Liaoning Province 1. The per capita arable land area is decreasing year by year and the quality of arable land is declining. For a variety of reasons, the cultivated land in the province shows a trend of decreasing year by year while the population is on the rise. The contradiction between population and arable land has become increasingly prominent. Per capita arable land From 3.88 mu in 1949 to 1.54 mu in 1996, decreasing by an average of 1.27% per annum. In some areas, per capita arable land has fallen below the threshold of 0.8 mu cultivated land per person as stipulated by the international community. If this situation remains unresolved, the consequences will be worrisome. A considerable number of peasants in the whole province only focus on the immediate interests and one-sided emphasis on high yield, only re-use, not recuperate, green manure and leguminous crops and other fertility fertility less and less crop cultivation; fertilization, only heavy chemical fertilizers, not Heavy organic fertilizer, resulting in reduced soil organic matter content, affecting the physical and chemical properties of the soil, destroy the physical structure of the soil, arable land water retention and fertility decline, natural productivity decreased.