红枣栽植的气候条件分析

Analysis of the Climate Condition about Red Jujube Growing

本文对吕梁山区红枣的栽植与当地气候的关系进行了分析讨论，发现吕梁山区红枣产量的高低与花期的温度和降雨量有明显的关系。在红枣的初熟期、白熟期、成熟期、采收期对温度条件比较敏感，气候因素是影响红枣生产的重要因素。色泽的好坏、枣质的优劣、含各种矿物质和营养成份的多少，都和气候条件密切相关。优质红枣栽植上必须具备四个条件，即：海拔在1000m以下；年日照时间在2550h以上；年有效积温在3300℃以上，年平均温度达10℃以上；年无霜期一般应在185d～200d左右。

In this paper, the relation of red jujube growing and climate condition is discussed. Climate condition especially air temperature is the primary factor to red jujube production. Red jujube growing needs 4 conditions as follows： 1 ） The altitude must be below 1000m. 2） The annual accumulative insolation duration should exceed 2550h. 3） The annual average temperature must be higher than 10℃ and annual effective accumulative temperature should be above 3300℃. 4） Generally, the length of frostless period is between 185d and 200d.