幼果期调亏灌溉对库尔勒香梨商品果率的影响

Effect of Regulated Deficit Irrigation During Young Fruit Period on Fruit Commodity Rate of Korla Fragrant Pear

为研究库尔勒香梨幼果期不同水分处理对商品果率的影响,选取20年龄长势一致的库尔勒香梨树作为试验对象,分成3组,在幼果期分别以常规灌溉水量的60%(RDI-1)、80%(RDI-2)、100%(CK)进行灌溉,统计各组梨树2012—2014年的商品果率并加以分析研究。结果表明:受到水分调控的香梨平均硬度较正常灌溉低,可溶性固形物含量较正常灌溉高,综合商品果率较正常灌溉低,在幼果期以常规灌溉水量80%作为灌水定额的处理,可以节约生育期总用水量的5%,并兼顾商品果率和水分利用效率的要求,可以进行推广应用。

In order to study the influence of different water treatments on fruit commodity rate, the 20-year-old Korla fragrant pear trees with similar growth were selected as test objects,and were divided into three groups. During young fruit period,the test objects were irrigated as 60% （RDI-1）,80% （RDI-2） and 100% （CK） of conventional irrigation water amount respectively. The commodity fruit rate in 2012- 2014 of each group was analyzed. The results showed that the average hardness of pear under water regulation was lower than that of control ,and the content of soluble solids was higher than that of control. The comprehensive commodity fruit rate was lower than normal irrigation, and the treatment with irrigation quota of 80% conventional irrigation water amount in young fruit period could save 5% of total water consumption in growth period,and both satisfied the fruit commodity rate and water use efficiency,could be to be popularized and applied.