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位于辽宁西北部寒冷半干旱地区的建平县,土地资源丰富,光、热等气候资源也适应南果梨的生长。近年来,通过西辽河综合开发、退耕还林等项目的牵动,全县开发‘南果梨’面积3 500 hm2,210万株。进入初结果期(5～10年生)的达2 100 hm2,126万株,占开发总面积(株数)的60%以上。但初结果期树平均株产仅5.6 kg,每666.7 m2产量224 kg,产值533.60元。‘南果梨’树适期不结果严重挫伤了果农开发南果梨的积极性。鉴于此,我们对‘南果梨’适期不结果的原因进行了调查。
Located in Jianping County, a cold and semi-arid area in the northwest of Liaoning Province, the land is rich in resources and climate resources such as light and heat are also suitable for the growth of Nanguo pear. In recent years, through the comprehensive development of the West Liaohe River and the project of returning farmland to forests and other related projects, the area of Nanguo Pear has been developed to cover 3 500 hectares and 21.1 million. The initial results (5 to 10 years old) amounted to 2,100 hm 2 and 1.26 million, accounting for more than 60% of the total development area (number of trees). However, the average yield of early fruiting trees was only 5.6 kg, yielding 224 kg per 666.7 m2 and producing value of 533.60 yuan. ’Nanguo pear’ tree is not the result of a timely manner to dampen fruit farmers develop Nanguo pear enthusiasm. In view of this, we investigated the reason why Nanguo pear failed to achieve the desired result.