不同节水灌溉技术对红江橙果园生态及根系生长的影响

Impacts of different water-saving irrigation technologies on the orchard ecology and roots growth of Hongjiang orange

分别采用膜下滴灌、微喷灌和滴灌3种节水灌溉技术对红江橙的果园生态及根系生长进行试验。结果表明:3种灌溉技术都可不同程度地改善红江橙的果园生态,其中微喷灌效果最优,其次是膜下滴灌和滴灌;3种节水灌溉技术都能明显提高红江橙根系的生长量,对根系水平分布和垂直分布的影响表现为水平分布的范围较窄、垂直分布的深度较浅。

The three water- saving irrigation technologies, i. e., film dropping irrigation, tiny spraying irrigation and trickle irrigation, were carried out to find out their impacts on the orchard ecology and roots growth of Hongjiang orange. The results indicated that all three irrigation technologies contribute to some extent to the orchard ecology of Hongjiang orange, with tiny spraying irrigation ranking at the top and followed by film irrigation and trickle irrigation. All three water - saving irrigation technologies enhanced the roots growth of the Hongjiang orange, and the impact on the horizontal and vertical distribution of roots were demonstrated by narrow range on the horizontal level and shallowness in depth.