青石山区堰边核桃良种丰产栽培技术研究

STUDY ON FINE BRANDS OF WALNUT (J.regia) FOR HIGH YIELD IN LIMESTONE MOUNTAIN AREA

利用青石山区梯田堰边栽植 1～ 2a生核桃实生苗 ,株距 4～ 5m ,行距不等 ,每公顷平均 375株。缓苗后进行良种嫁接。主要品种有元丰、香铃、鲁光、阿九等。嫁接第 2年结果 ,第 3年有一定产量。每 6 6 6 7m2 核桃产量 3a生为 33 5kg ,5a生为 91 5kg ,9a生为 2 18 2 5kg ,12a生为2 73 2 5kg。堰边良种核桃的综合经济效益分别为对照的 1 5～ 4 9倍。阐述了主要优质丰产栽培技术 ,包括实生苗建园与幼树嫁接良种、合理整形修剪、肥水管理与合理间作、适期采收、坚果处理及病虫害防治等。

Walnut seedlings were planted on the edge of the terrace in limestone mountain area with distance between plants 4～5 meters and averaging 375 seedlings per hectare. Fruiting appeard in the second year after grafting and having output from the third year.The output was 33.5kg per 666.7 m 2 of the walnut which have grown 3a ,91.5kg for the 5a and 218.25kg for the 9a,273.25kg for the 12a. The synthetic income of fine brands is 1.5～4.9 times to comparison. It's expound to prime technique for high yield, including planting seedling, grafting fine brands,reshaping for walnut trees, and so on.