朝阳市属于半干旱地区。由于干旱少雨,土壤瘠薄,该区苹果平均株产仅11.5kg,这严重地制约着果业的发展。为此,我们于1991年至1992年对旱地苹果园进行了树盘松土、覆草、穴施肥水试验,取得了较好的效果,现简介如下。1 试验方法选择具有代表性的幼龄和成龄苹果园各200亩。春季土壤化冻后,在树盘内松土10cm Chaoyang City is a semi-arid area. Due to arid rain and soil infertility, the average yield of apples in this area is only 11.5kg, which severely restricts the development of fruit industry. To this end, we conducted in 1991 to 1992 in the dry apple orchard tree disc soil, grass, hole fertilization water test, and achieved good results, are summarized below. A test method to choose a representative young and mature apple orchards of 200 acres. After the soil is thawed in spring, soil is loosen 10 cm in the tree