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娜脐橙果大无核,外观内质优良,树体丰产性能好,深受消费者及种植者欢迎。但因缺乏技术,高换成活率低,长势差,迟迟不结果。为此,我们把几年来进行的脐橙高换技术介绍于后,供同仁参考。一、高换树的选择及接芽数娜脐橙对肥水、土壤条件要求较高,高换树应是生长在土层较深厚肥沃的地方,树龄不超过30年的红桔、温州蜜柑和本地甜橙树,对基部被天牛、吉丁虫、流胶病、裂皮病为害较重的树不换。为加速树冠形成,6年生以下树,接20芽左右,8—10年生树,接30—50芽,10年生以上树,接50—100芽。二、高换技术 1、天气选择。选择雨后晴天或阴天,估计在高换后1—2天内不得下雨,高换前若土壤较干旱,应灌足一次水。
Na navelin large non-nuclear, the appearance of good quality, tree bumper performance, welcomed by consumers and growers. However, due to lack of technology, high survival rate is low, poor growth, delayed result. To this end, we introduced the Navel Orange replacement technology that has been carried out over the past few years for my colleagues’ reference. First, the choice of high for the tree and then buds Na navel orange fertilizer and water, soil conditions are higher, high-change trees should be grown in more fertile soil where the age of not more than 30 years of red orange, Satsuma and local Sweet orange tree, on the base by the beetles, jibin insects, meridians, split skin disease damage heavier trees do not change. In order to speed up the crown formation, the tree below 6 years of age, then about 20 buds, 8-10 years old tree, then 30-50 buds, 10-year-old tree above, then 50-100 buds. Second, high technology 1, the weather options. Select sunny or cloudy after the rain, it is estimated not to rains within 1-2 days after the high-change, if the soil before the high-change more drought, irrigation should be enough water.