库尔勒香梨覆膜滴灌效应研究

Effects of Film Mulching Drip Irrigation on Korla Fragrant Pear

在滴灌方式下,通过覆盖地膜的栽培方式研究了库尔勒香梨生长特性以及果实品质和产量。结果表明,地膜滴灌(MD)显著提高了香梨根际区土壤水分含量,0～60cm土层土壤含水率显著高于未覆盖滴灌(ND)和漫灌(CK),该土层土壤含水率与叶片含水率之间的相关性显著高于60～100cm土层。土壤含水率的增加促进了叶片含水率和叶绿素含量的提高,二者之间呈线性正相关关系。MD显著地促进了香梨树体营养生长,提高了座果率和单果质量,改善了果形指数,一级果率较ND和CK分别提高9.42%和25.79%,产量分别提高15.50%和38.91%,水分利用效率提高10.40%和45.26%。MD提高了果实糖酸比,降低了硬度,改善了果实口味。

The growth characters, fruit quality and yield of Korla fragrant pear were studied under film mulching drip irrigation. The results showed that the soil water content of the root zone of fragrant pear was notably increased under film mulching drip irrigation （MD）, at 0 to 60 cm layers, soil water eontent of MD were higher than non-covered treatment （ND） and flood irrigation （CK）, the relationship between soil water content and leaf water content is higher than 60 to 100 cm layers. Leaf water content and chlorophyll content appeared positive linear correlation and increased with soil water content increased. MD markedly improved nutritional growth characters of fragrant pear, fruit setting percentages and single fruit weight were increased and fruit shape index were improved. Compared with ND and CK, the first order fruit rate increased 9.42% and 25.79%, yield increased 15.50% and 38. 91%, and WUE increased 10.40% and 45.26%, respectively. Fruit sugar acid ratio is increased under MD and fruit hardness was decreased, so promoted the fruit savor.