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一、覆草果园覆草是近年来推行的一项增产增收增效的新型实用技术。对改变丘陵岗地果园“石渣子、早包子”恶劣立地条件极为有效。枣阳市连年实施该项技术总面积达1.8万公顷,收到了显著效益。 (一)效应 1、保持水土减少蒸发和流失。果园覆草后缓解了降水对土壤的直接冲刷,降低了水土流失,提高了土壤对雨水的渗透吸附和保蓄能力,阻碍并减少土壤水分蒸发散失,提高土壤含水量。据测,覆草后连续伏旱25天,土
First, mulching orchard grass mulching is a new practical technology that has been implemented in recent years to increase production, increase income and increase efficiency. To change the hilly orchard “stone slag child, early buns,” the conditions of the poor site extremely effective. Zaoyang City, year after year the implementation of the technology a total area of 18,000 hectares, has received significant benefits. (A) the effect of 1, to keep the soil and water reduce evaporation and loss. After the orchard is covered with grass, the direct erosion of the soil by the precipitation is alleviated, the soil erosion is reduced, the ability of the soil to infiltrate, store and hold rainwater is increased, the evaporation and loss of soil moisture are reduced and the soil moisture content is increased. It is measured, after continuous grass drowned 25 days, soil