EFFECT OF A ROOT-ZONE INJECTION IRRIGATION METHOD ON WATER PRODUCTIVITY AND APPLE PRODUCTION IN A SEMI-ARID REGION IN NORTHWESTERN CHINA
EFFECT OF A ROOT-ZONE INJECTION IRRIGATION METHOD ON WATER PRODUCTIVITY AND APPLE PRODUCTION IN A SEMI-ARID REGION IN NORTHWESTERN CHINA
复制标题
根区注水灌溉方法对西北半干旱地区水分生产力及苹果产量的影响
DOI：
10.1002/ird.2379
复制
发表时间：
2019
影响因子：
1.9
通讯作者：
TIAN-RAN CHANG
中科院分区：
文献类型：
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作者：
YAN-PING WANG;LIN-SEN ZHANG;YAN MU;WEI-HONG LIU;FU-XING GUO;TIAN-RAN CHANG
中国黄土高原地区水资源稀缺，灌溉效率是一个具有挑战性的问题。传统的地面滴灌（SDI）方法未能提高灌溉效率和减少该地区的地面蒸发。an.apple北方的果园中，设计了一种易于安装、实用的根区喷射灌溉（RII）方法，该方法利用地下促渗器（SIPA）将水直接输送到根区，具有低滴头堵塞风险。在0-0.6米土层（苹果根系集中的地方），RII方法在所有三个生长季节都产生了比SDI方法更高的土壤含水量。土壤含水量始终高于田间持水量的60%，可满足果树的需水量。在相同灌水量下，与SDI相比，RII能减轻土壤干燥，显著提高苹果产量，改善果实品质。灌溉效率和水分利用效率都得到了提高。研究结果为半干旱地区苹果园采用RII灌溉方式，提高苹果园的保水能力和生产的可持续性提供了理论依据。
Within the Chinese Loess Plateau, water resources are scarce and irrigation efficiency is a challenging issue. Traditional surface.drip irrigation (SDI) methods have failed to improve irrigation efficiency and reduce surface evaporation in the region. An.easy-to-install and practicable root-zone injection irrigation (RII) method, with a low risk of emitter clogging and which uses.subsurface infiltration-promoting apparatuses (SIPA) to deliver water directly to the root zone, was designed and tested in an.apple orchard over 3 years in northern Shaanxi, China. In the 0–0.6 m soil layer (where the apple roots are concentrated), the.RII method produced consistently higher soil water content than the SDI method over all three growing seasons. The soil water.content was consistently higher than 60% of field capacity, thus meeting the water requirements of fruit-bearing apple trees. In.addition, the RII method alleviated soil desiccation, significantly increased apple yields and improved fruit quality compared.with the SDI method using the same volume of irrigation water. Both irrigation efficiency and water-use efficiency were improved with the RII method. These results provide a theoretical basis for the utilization of the RII irrigation method in apple.orchards in semi-arid regions, which may improve water conservation and the sustainability of apple production.