覆砂对库尔勒香梨园土壤保水性和产量的影响

Influence on Water Holding Capacity of Soil and Yield of Korla Fragrant Pear Orchard With Covering Sand

以22年树龄的库尔勒香梨园土壤为研究对象,进行表层覆砂试验,设置不同覆砂厚度,采用常规方法监测土壤灌水后不同时间点上的土壤含水量以及库尔勒香梨产量,分析覆砂厚度对香梨园不同时期土壤含水量和果树产量的影响。结果表明:覆砂能抑制土壤蒸发,提高土壤含水量,促进果树增产。土壤覆砂5cm处理对提高土壤保水性效果较好,但与覆砂2cm处理土壤含水量相比无显著差异。覆砂2cm处理和覆砂5cm处理的库尔勒香梨产量较不覆砂处理库尔勒香梨产量增加8.81%和11.05%。综合考虑覆砂对库尔勒香梨园土壤保水性、果实增产和改善果形特征的影响,该研究推荐库尔勒香梨园表土覆砂以2cm厚度为最佳。

Taking soil in 22 years Korla fragrant pear orchard as research object,setting experimental areas with different thickness of covering sand,the effect of thickness of covering sand on soil moisture and the yield of Korla fragrant pear were analyzed.The results showed that soil surface with covering sand could inhibit soil evaporation,increase soil moisture,and promote fruit production.It was better for improving soil water holding capacity to cover 5cm sand,but there was no significant difference compared with soil water content of covering 2cm sand.The yield of Korla fragrant pear with covering 2cm sand and 5cm sand were respectively increased 8.81% and 11.05%than the yield of Korla fragrant pear without covering sand.Consider the effect of soil water holding capacity,promoting fruit production and improving fruit shape characteristics for Korla fragrant pear orchard with covering sand,this study recommended that it was the best to cover 2cm sand on soil surface in Korla fragrant pear orchard.