我国制干枣优生区研究

通过比较研究,初步确定了我国优良制干枣品种76个,优良制干枣产区21个,集中分布在我国北方的新疆、甘肃、宁夏、陕西、山西、河南、河北、山东、辽宁等9个省区。研究提出了我国制干枣优生区的划分标准,包括年度因子标准和花果期因子标准2个方面的内容,前者包括年平均温度、年降雨量、≥10℃的积温、无霜期、7月份气温、纬度,决定着优生区的地位;后者包括花期温度、湿度、降雨量,以及幼果生长期和脆熟采收期的降雨量5个指标。影响着红枣优质丰产的水平。

A study on high-quality production regions of dry Chinese jujube in China

Based on the characteristics and quality of dry-making jujubes,76 superior drying-jujube cultivars were selected from 383 dry-making cultivars grown in China. According to the data of analyzing the meteorological factors,the conditions of the producing regions and the quality of the cultivars,21 high-quality jujube producing regions,distributed mainly in Xinjiang,Gansu,Ningxia,Shaanxi,Shanxi,Henan,Hebei,Shandong and Liaoning of North China,were determined. The standard indexes for the high-quality jujube producing regions were determined by the annual average temperature,July average temperature,annual average rainfall,accumulated temperature of ≥10℃,frost free period,and latitude; and by the indexes of temperature,humidity and rainfall in the blossom period,and rainfall during fruit growing period and ripening-harvesting period.