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山楂在北方落叶果树中,属于结实早的树种。定植后,两年见花,三年丰产的实例为数不少,而我市四、五年生的幼树仍未受益。因此,研究和解决山楂幼树低产问题对于发挥山楂树早实、丰产的潜力,充分利用土地资源,增强投资效益及保证山楂生产健康发展,具有现实和长远意义。一、低产原因1.立地条件差山楂喜光耐阴,适冷凉、温润气候。我市初夏前后的多风、少雨、干燥、高温对山
Hawthorn in the deciduous fruit trees in the north, belong to early tree species. After planting, two years to see the flowers, three years a large number of examples of high yield, and the city four or five years old young trees have not benefited. Therefore, researching and solving the problem of low yield of hawthorn saplings has the realistic and long-term significance for exerting the premature and high yield potential of hawthorn trees, making full use of land resources, enhancing investment returns and ensuring the healthy development of hawthorn production. First, the low yield causes 1. Site conditions Hawthorn hi light shade, suitable for cold, warm climate. The city before and after the windy, drier, dry, high temperature on the mountain