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我县核桃产业发展现状及改良对策.doc


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我县核桃产业发展现状及改良对策
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities12
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
试析我县核桃产业发展现状及
改 良 对 策
成县位于甘肃省东南部,属秦岭山脉徽成盆地,境内海拔高度在750至2377米之间,年日照1624小时,年均降雨量620.8mm,无霜期200天,四季分明,冷暖适宜,为南北过渡性暖温带半温润气候区,光、热、水、土、肥等自然条件都非常适宜于核桃生长,是全国核桃主产区之一。
核桃是一种长寿、高产、品质好、投资少、见效快、收益大、效益长的优良干果和木本油料树种。嫁接后5年便有收益,可连续收获100多年,甚至达300年。核桃仁营养丰富,是深受群众欢迎的保健食品,也是重要的外贸出口物资,国内外市场需求量大,发展前景广阔。
核桃系列产品是我国传统的出口商品,热销日本、韩国、东南亚等多个国家和地区,加上核桃的医药价值和化工系列产品开发价值不断为人们所认识,发展核桃具有广阔的前景,以核桃为主要原料加工制作的核桃仁、油料、食品添加剂及生产的木材、家具、工具等系列产品已达1 000种以上,发展核桃效益愈来愈明显。
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities12
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, complete with warning signs, isolating network protection facilities
(一)种子繁殖,良莠不齐。
成县核桃由于长期沿用种子繁殖,形成了遗传上的多样性,性状分离现象严重,品质良莠不齐。优良单株的坚果壳薄,仁色浅,风味香,取仁容易;而有的单株品质较差,核桃壳厚,取仁较难,仁色较深。结果时间初始期早晚不同,多数结果较晚,一般8-10年开始结果。单株产量差异悬殊,成龄树少则1-2kg,多则100-200kg。导致景核桃产量低、品质不齐、效益慢,制约了核桃产业的发展。
(二)重栽轻管,产量不高。
一是由于认识、体制、技术及资金

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