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山区稻田土壤由于多年来受气候和人为耕作不当等因素的影响,造成了土壤质量严重退化,从而导致种植的作物品质、产量也随之下降。 山区稻田多为坡地梯田或山腰垅田,农民常年用头丘灌尾丘排的串灌和带水耕作,以及其他人为生产活动的不合理,这是造成稻田肥土流失的基本因素。年降雨量大、不平衡,特别是5—6月降雨可占全年雨量的35％左右,暴雨时山洪凶猛,稻田防洪沟连年失修,山洪大量地冲、带走稻田耕作层的土壤粘粒和养分,造成大面积稻田耕层逐年减薄变瘠,这是造成土肥流失的另一因素。农民用地忽视养地,绿肥种植面
Due to the influence of many factors, such as climate and man-made tillage improperly, the paddy soil in mountainous areas has resulted in the serious degradation of soil quality, resulting in the crop quality and the decrease of yield. Most of the paddy fields in mountainous areas are slope terraces or hillside fields, peasants’ serial irrigation and hydroponic farming of Humphrel mound shoals, and other unreasonable man-made activities are the basic factors that cause the loss of soil and fertilizers in paddy fields. Annual rainfall is large and unbalanced. In particular, May-June rainfall may account for about 35% of the annual rainfall. Fierce torrential rains flood the paddy field flood ditches year after year, torrents flood to a large extent, And nutrients, resulting in a large area of paddy plow thinning barren year by year, which is another factor in the loss of soil fertility. Land for farmers to neglect, green manure noodles