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清水县苹果痘斑病害的防治１花前花后灌水：若春旱时，凡有灌溉条件的应于此期浇透水１～２次，无灌溉条件的山平地、坡地果园，可拉水浇灌，保证在花后４～５周果实吸钙关键期有足够的土壤水分，利于根系对钙素的吸收。据调查，红星苹果树花后两周浇水一次的病果率２６．...
Prevention and treatment of acne spot disease in apple seedling in Qingshui County 1 Flowering before flowering in anthesis: If spring drought occurs, irrigated water should be irrigated 1 or 2 times during this period if there is any irrigation condition. , To ensure that in the 4 to 5 weeks after flowering calcium absorption key period of sufficient soil moisture, which will help the root absorption of calcium. According to the survey, Red Star apple tree watering two weeks after the disease rate of 26. ...