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本文报导1960年以来,我院和浙江各地大量引种核桃的结果。调查了核桃在引种地的生长发育;不同种源地核桃种子后代始果年龄,早期产量,单株间产量差异,核果经济性状的多样性;土壤条件对核桃生长结果和根腐病的影响,以及实生选种和嫁接繁殖等问题。为引种地发展核桃提供优株和栽培依据。核桃(Juglans regia L)是我国主要油料果树,分布在华北、西北和西南各地。我院于1960年从河北、山西、贵州,四川和新疆等省(区)引进核桃种子在临安县引种试验。60年代末浙江省大量引种作生产性栽培,据1978年不完全统计总株数达20万株左右,主要分布在建德、义乌和浦江等县。目前绝大多数核桃已达结果年龄,但除少数植株较丰产外,多数存在着不同程度的迟结果、低产、产量不稳定和不结果等现象。
This article reports the results of a large number of introduced walnuts in our hospital and Zhejiang since 1960. The growth and development of walnut in the introduced area were investigated. The fruit age, early yield, yield per plant and diversities of economic characters of walnut were studied under different provenances. The effects of soil conditions on the growth and root rot of walnut, As well as seed selection and grafting reproduction and other issues. For the introduction of walnut to provide excellent basis and cultivation basis. Juglans regia L is a major oilseed fruit tree in China, distributed in North China, Northwest China and Southwest China. Our hospital in 1960 from Hebei, Shanxi, Guizhou, Sichuan and Xinjiang provinces (regions) the introduction of walnut seeds introduced in Lin’an County. In the late 1960s, a large number of introduced Zhejiang Province for productive cultivation, according to incomplete statistics in 1978 the total number of plants reached 200,000 or so, mainly in Jiande, Yiwu and Pujiang counties. At present, the vast majority of walnuts have reached the result of age, but with the exception of a few plants with high yield, most of them have different degrees of late results, low yield, unstable yield and no result.