不同深度滴灌对苹果幼苗生长及生理特性的影响  

Effect of Drip Irrigation in Different Depth on Growth and Water-use Efficiency of Young Apple Trees

作　　者：阎红丽[1] 邹养军[1] 马锋旺[1] 刘丙花[1] 

机构地区：[1]西北农林科技大学园艺学院,陕西杨凌712100

出　　处：《节水灌溉》2012年第3期29-32,共4页Water Saving Irrigation

基　　金：国家苹果产业技术体系"生物技术与抗性育种岗位"(CARS-28);西北农林科技大学唐仲英育种基金"优质抗性苹果新品种的选育"(A0906)

摘　　要：地下滴灌是节水灌溉的一种重要模式。以一年生‘红盖露’苹果幼苗为试材,设表层滴灌、中层滴灌(7cm)、深层滴灌(14cm)3种灌水处理,在灌水量一致的情况下,研究了不同深度滴灌对其生长及生理特性的影响。结果表明:处理周期内,深层滴灌与表面滴灌相比苹果幼苗的光合特性和根系活力降低,而根冠比和水分利用效率升高;中层滴灌与表面滴灌相比苹果幼苗的光合特性升高,根系活力未发生显著变化而水分利用效率降低。总之,三种滴灌深度中层滴灌植株生理状态良好灌水利用效率高,是比较理想的埋管深度。Subsurface drip irrigation is an important model of water-saving irrigation.One-year-old ＇Gale Gala＇ apple trees grafted onto Malus hupehensis Rehd.were used to research the effects of drip irrigation in different depths on plants growth and water-use efficiency.Three treatments were executed： surface drip irrigation（served as control）,middle（7 cm-underground） drip irrigation and deep（14 cm-underground） drip irrigation.The results showed that： compared with the surface control drip irrigation,the deep drip irrigation reduced the photosynthetic characteristics and root activity,but increased the root-shoot ratio and water use efficiency;the middle drip irrigation improved the gas exchange parameters and unchanged the root vigor and reduced water-use efficiency.In conclusion,the middle depth drip irrigation was much more benefit to apple trees vegetative growth and irrigation water-use efficiency than the other two irrigation regimes,which can be widely used in arid and semi-arid areas.

关 键 词：地下滴灌 根冠比 光合特性 水分利用效率 

分 类 号：S661.1[农业科学—果树学]