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稀土在长富２号苹果树上的应用试验试验地设在山西省榆次市北田镇豆腐庄果园，土壤属褐土类，中性，土层深厚。试材为６－８年生长富２号苹果树，共１１．３亩，株行距５×６米，２４９株。试验采用的稀土元素是由包头市稀土化工厂引进，以叶面喷施，处理时间为盛花期（４...
The application experiment of rare earth on apple tree of Changfu No.2 is located in the tofuzhuang orchard of Beitian Town, Yuci City, Shanxi Province. The soil belongs to the category of cinnamon soil with neutral soil layer. The test material is 6-8 years growing rich apple tree No. 2, a total of 11.3 acres, spacing of 5 × 6 meters, 249 strains. The rare earth elements used in the experiment were introduced from the Rare Earth Chemical Plant in Baotou, and sprayed on the foliage, the processing time was full bloom (4 ...