知识与财富的链接
应用热脉冲技术对核桃树干液流进行了测定,探讨了核桃液流的日变化、月变化规律和水分的供求关系。结果表明:核桃树干液流速率存在明显的昼夜变化规律,呈单峰形曲线;典型晴天耗水大小顺序为8月>7月>5月>6月>9月>4月>10月,月总耗水大小顺序为5月>8月>6月>7月>9月>4月>10月;6~9月份降雨量与耗水量比>1,水分供大于求;4、5、10月份降雨量与耗水量比<1,水分供不应求,不利于土壤水分积累;大气温度、辐射强度与液流速率极显著正相关,相对湿度与液流速率呈极显著负相关。
The stock sap flow of Juglans regia was measured by the heat-pulse technique.Daily,monthly variations of the sap flow and the relationships with water supply were discussed.The results showed that the sap flow velocity clearly represented regularity day and night,exhibited an unimodal curve.Water consumption in a typical sunny day was in the order of August > July > May > June > September > April > October.The water consumption in one month was in the order of May > August > June > July > September > April ...
