摘要
通过温度、水分、地形、光照、土壤等生态因子对核桃生长结果影响进行调查统计和分析研究.调查结果表明,核桃的优质丰产与温度、水分、地形、光照、土壤等生态因子密切相关.商州区温度和水分比较适宜核桃生长和发展核桃产业;地形不同核桃生长结果差异很大,海拔高度 720～1 100 m的生长结果最好;其次是 1 100～1 400 m,1 400～1 700 m最差;坡度10°以下缓坡生长结果最好,32°陡坡生长结果最差;南坡或东南坡生长结果好,北坡或西北坡差;坡下部生长结果好,坡上部差;树冠外缘光照比内膛好,生长结果树冠外缘也好于树冠内膛;沙壤土核桃生长结果最好,其次为沙石土和黄泥巴土,石渣土最差.
Abstract
In order to develop walnut industry and establish walnut bases in Shangzhou District,the statisti-cal survey and analysis were conducted to investigate the effects of ecological factors,including temperature,moisture,topography,light and soil,on the growth of walnuts.The results showed that the quality and produc-tivity of walnuts were closely related to the ecological factors such as temperature,moisture,topography,light and soil.The temperature and moisture conditions in Shangzhou district were more suitable for growth and devel-opment of walnut industry;the growth of walnuts varied greatly based on topography,with optimal results ob-served at an altitude between 720～1 100m,followed by 1 100～1 400m,the least favorable conditions at 1 400～1 700m;gentle slope with a gradient of less than 10° had the best growth results,whereas a steep slope with a 32o gradient resulted in the poorest results;Walnuts exhibit better growth on south or southeast slope compared to north or northwest slope;the bottom of the slope showed better growth results than the top;In terms of soil conditions,the outer edge of the crown had better light and growth results compared to inner part of the crown.The growth results of walnuts are the most favorable in sandy loam soil,followed by sandstone soil and yellow mud soil,and the least in stony soil.
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