Effects of gravel-sand mulching and irrigation on soil hydrothermal conditions and fruit yield in ecological jujube forests on degraded field

• Published in: Journal of agricultural resources and environment Vol. 39; no. 5; p. 940
• Main Authors: Liu, Qiaoling, Li, Wangcheng, Zhao Guangxing, Jia Zhenjiang, An Wenju, Wang, Jie, Mu, Min
• Format: Journal Article
• Language: Chinese
• Published: Tianjin Journal of Agricultural Resources and Environment (JARE) 01.01.2022
• Subjects: Arid zones; Aridity; Crop yield; Efficiency; Fertility; Forests; Fruits; Gravel; Irrigation; Irrigation water; Moisture content; Mulching; Sand; Sandy soils; Soil conditions; Soil temperature; Soil treatment; Soil water; Soil water storage; Trees; Water content; Water depth; Water storage; Water use; Water use efficiency; Ziziphus jujuba
• ISSN: 2095-6819; 2095-6819
• DOI: 10.13254/j.jare.2022.0133

为探明覆砂和灌水量对退耕压砂地生态枣林土壤水热及产量的影响，在宁夏中部干旱带开展大田试验，通过设置2种覆盖方式[覆砂（M）、裸土（N）]和3个灌水量[低水180 mm（W1）、中水210 mm（W2）、高水240 mm（W3）]，研究覆砂和灌水量对土壤温度、土壤贮水量以及枣果产量和水分利用效率的影响。结果表明：与裸土相比，覆砂使0~10 cm土壤温度提高0.8~3.1℃。覆砂后土壤升温时段（10：00—14：00）明显滞后于裸土（8：00—14：00），升温速度比裸土处理快0.4℃·h-1。覆盖方式及灌水量对枣树全生育期0~80 cm土壤贮水量影响显著（P<0.05），覆砂处理较裸土处理平均提高10.97%，且在土壤含水率较低的萌芽展叶期增幅最高，达14.54%。覆砂条件下枣树生长指标、产量和水分利用效率均高于裸土，不同灌水量下枣果产量从高到低表现为W3>W2>W1，分别较裸土处理增加5.99%、10.54%、26.79%，其中MW2处理水分利用效率最高，为1.55 kg·m-3。综上，MW2处理（覆砂、灌水量210 mm）可作为宁夏中部干旱带退耕压砂地生态枣林适宜的种植模式。In this study, we aimed to investigate the effect of amount of irrigation water under gravel-sand mulch conditions on hydrothermal parameters of soil and fruit yield of date palm forests in fallow gravel-sand mulched field. The field experiment was conducted in an arid zone in central Ningxia. To investigate the effects of gravel-sand mulch and irrigation on soil temperature, soil water storage, jujube fruit yield, and water use efficiency, we used two types of mulch(gravel-sand mulching(M)and bare soil(N))and three differ