滴灌对枣园土壤水分运移和红枣叶片的影响

【目的】通过定位试验,研究大田滴灌条件下枣园土壤水分的分布特征。【方法】土壤剖面水分在土壤中的迁移规律,不同覆盖方式对灰枣果园土壤湿度及枣树叶片水分含量的影响。【结果】在一定灌水量和滴灌流量条件下,土壤垂直湿润峰明显大于水平湿润峰,且随着灌水量的增加呈线性关系,水平湿润峰随时间的变化呈显著的二项式函数关系。上午叶片含水量高于下午,但差异未达到显著性水平。覆盖草帘较覆盖地膜处理土壤水分含量高,变化幅度小。【结论】在综合调控土壤水分分布特征时,必须考虑滴灌技术参数对土壤水分分布的影响。

The Effect of Drip Irrigation on Soil Water Movement and Ziziphus jujube Leaves

【Objective and Method】The experiments were used for the study of Ziziphus jujube(Z.J) farmland soil moisture and soil profile bulk density on the movement law of the soil water under drip irrigation by location test.It also researched the effect of different mulching ways on farmland soil moisture and Z.J leaves water content.【Result】The results show that the vertical wetting front distance is bigger than that of horizontal under the same drip discharge and quantity,and present a linear relationship with increase of irrigation water quantity.The horizontal wetting front remarkably increased with the change of time,and could be expressed by binomial functions.The morning leaves water content is higher than that of the afternoon,but the difference did not arrive at significant level.Soil water content with straw mulch was higher than polythene,the range of changes is small.【Conclusion】The irrigation technique parameters should be considered when the soil water distribution features are adjusted.