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果树冬灌,蓄水于土,既能防冻防旱,又能“冬水春用”,促根系生长,促开春早发。冬后在果园盖草,既可防冻保墒,又能培肥改良土壤。 一、果园冬灌的技术原则: 1.适期冬灌:灌冬水的最佳效果,关键在适期适时,实践表明,以表土日消夜冻时冬灌最合适。冬灌过早,气温尚高,蒸发大,既不利蓄水于土,又不利润土防旱防冻;冬灌过晚,气温过低,土壤冻结,水分难下渗,在地表结冰,反而加重冻害,
Winter fruit irrigation, water storage in the soil, both antifreeze drought, but also “winter water spring,” and promote root growth, promoting early spring onset. Cover the grass in the orchard after winter, both antifreeze and soil moisture, but also to improve soil fertility. First, the technical principles of orchard winter irrigation: 1. Suitable winter irrigation: the best effect of irrigation winter water, the key in the right time, practice shows that the topsoil digestion when winter irrigation most suitable. Winter irrigation is too early, the temperature is still high, the evaporation is large, neither conducive to water storage in the soil, not profitable soil drought and frost; winter irrigation too late, the temperature is too low, soil freezing, water infiltration impermeable, freezing on the ground, ,