一、试验地点 试验地设在阳曲县果树中心、城晋驿示范果园,小区面积为0.1亩,试验区的土壤肥力、施肥水平、病虫害防治情况、果树长势,相对一致,试验小区为随机排列,重复3次,供试果树品种为金冠,树龄4年,1996年开始挂果,试验前进行二年秸秆覆盖和果实套袋、拉枝。 First, the test site The experimental site located in Yangqu County Fruit Center, Cheng Jin Station demonstration orchard, the plot area of ​​0.1 acres, the test area of ​​soil fertility, fertilization levels, pest control, fruit trees growing, relatively consistent, the experimental plot for a random arrangement , Repeated three times for the test varieties of the crown, the age of 4 years, fruit began in 1996, two years before the test straw cover and fruit bagging, pull branches.