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1、多施有机肥。目前果园中有机质含量普遍偏低,影响了一些微量元素的吸收和利用,也影响了果树对大量元素磷、钾等的吸收量。实践证明,应达到1千克苹果3千克有机肥,才能保证苹果的连年丰产优质。施有机肥的最佳时间是秋季(中熟品种采果后,晚熟品种采果前)。其次是落叶至封冻前,结合开沟断根,能促发新的越冬根。有利于增加冬季的贮藏营养,保证花期的营养需求。2、合理修剪。变冬剪为四季修剪,降低营养消耗,保证通风透光,密植园一般要维持666.7米~2枝量低于10万。透光度大于15%。3、合理负载,根据主干面积或叶片数量算出留果量。计算方法为:每平方厘米主干横断面留果0.4~0.5千克;根据叶片数,可按叶果比25~40:1留果。这样既可保证果大,又能分化花芽。4、适时追肥。谢花后两周,追施含有机质的果树
1, more organic fertilizer. At present, the content of organic matter in the orchard is generally low, affecting the absorption and utilization of some trace elements, and also affecting the absorption of phosphorus and potassium in fruit trees. Practice has proved that it should reach 1 kg of apple 3 kg of organic fertilizer, in order to ensure the high yield of apple year after year. The best time for applying organic fertilizer is autumn (medium maturing varieties after picking fruit, late maturing varieties before picking fruit). Followed by the deciduous leaf before freezing, combined with ditching, root, can trigger a new winter root. Will help increase winter storage of nutrition, to ensure the nutritional needs of flowering. 2, reasonable pruning. Change the winter cut for the four seasons pruning, reduce nutrient consumption, ensure ventilation and light, dense plantations generally maintain 666.7 m ~ 2 less than 100,000. Transmittance greater than 15%. 3, a reasonable load, according to the trunk area or the number of leaves to calculate the amount of residual fruit. Calculated as follows: per square centimeter of the main cross-section of 0.4 to 0.5 kg; according to the number of leaves, the fruit can be more than 25 ~ 40: 1 leave fruit. This will guarantee fruit, but also differentiation flower buds. 4, timely top dressing. Thanks for two weeks after the flower, topdressing the organic fruit trees