No fertilizer and lack of fertilizer are the common problems in the current growth of hawthorn, which limits the potential for high yield of hawthorn. In recent years, the young and mature gardens of the mountainous areas have adopted the fertilization technology of apples and pear gardens, which has greatly increased the yield. For example, the mountain garden in Laixi City, Shandong Province is mostly in the sand beach, and the average soil organic matter content is only 0 . 36 %, low fertility, lack of nutrients such as nitrogen, phosphorus and potassium, and low and unstable hawthorn yield; after 5 years of hard work, soil improvement and fertility, the yield increased rapidly. The specific measures are fattening pressure acre bay mud 80 ~ lOO car (trolley, about about 200 kg per car), Shi farmyard manure per l-3 years, the park pressure grass, wheat straw pressure, 300 to 400 per acre kg, Mushi 50 to 75 kg of nitrogen fertilizer, phosphate fertilizer 50 kg; total 528.5 acres of hawthorn Park, after four years of 1033.6 kilograms per mu, increased to 2092.7 kg, the highest garden piece of 4584.3 kg. According to the experimental investigation, fertilization has a significant effect on fruit thickness, single leaf area, continuous flowering ability, number of fruits per fruit and single fruit weight. Hebei Chengde application of fertilizer to 4 kg per hawthorn, hawthorn yield 12.5 kg; 200 kg per plant farmyard manure, add l kg of urea, 33.5 kg hawthorn yield. After fertilization, the number of fruit in each inflorescence and the weight of one fruit increased, and the yield-increasing benefit was very significant.
　　 In the past, people talked too much about the tolerance of the hawthorn, and neglected the propaganda and stimulation of the hawthorn to increase production, resulting in a wide range of thin harvest. The so-called hawthorn is thin and thin, compared to apple trees such as apples. Under infertile conditions, hawthorn can survive and even bloom, but the results are very few, and the wide variety of thin harvest does not meet the requirements of modern fruit cultivation. Only on the basis of changing the soil, if the fertilization is grasped, the potential of mountain ridges to increase production can be fully utilized and good economic benefits can be achieved. Even if the price per kilogram of hawthorn drops to zero . The economic benefit of 60 yuan and 4,000 kilograms per mu is also very considerable.
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