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大理州气候温和,山区和半山区的面积广阔,加之土层深厚、肥沃、湿润,是我省核桃的主要产区。在海拔1800米——2800米的山凹、篝边,常有成片的铁核桃林自然分布,生长茂盛。但产果量少,经济价值低,除拣其种子榨油或供播种培育砧木外,尚未充分利用,任其自生自长。由于工农业的不断发展,人民生产、生活和外贸出口的需要,要求合理利用铁核桃林。为贯彻“以粮为纲,全面发展”的方针,广大贫下中农在生产实践中对铁核桃进行了逐步改造,积累了丰富经验,取得了良好成绩,创造了财富。为了充分利
Dali mild climate, mountainous and semi-mountain area is vast, combined with deep soil, fertile, moist, is the main producing walnut province. In the 1800 meters above sea level - 2800 meters of the concave, brimmed, often into a piece of iron Walnut natural distribution, flourishing. However, the quantity of fruit yield is small and the economic value is low. In addition to picking the seeds for oil extraction or cultivating rootstocks for sowing, it has not yet made full use of its own self-interest. Due to the continuous development of agriculture and industry, the people’s needs in production, living and export of foreign trade required the rational use of iron-walnut forest. In order to carry out the policy of “taking grain as the key link and all-round development”, the vast majority of poor and middle-income peasants have gradually transformed and made rich experience in iron and steel production and have achieved good results and created wealth. In order to fully benefit