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Water sources effects on soil salinity and biomass production of agriculture and agroforest systems in raised fields
Journal of Plant Interactions ( IF 2.6 ) Pub Date : 2020-09-29 , DOI: 10.1080/17429145.2020.1818857
Hengyu Hu 1, 2 , Mengkun Zhang 1 , Min Fu 2 , Jihao Qin 1 , Jiansheng Chen 1 , Yupeng Feng 3 , Geng Li 1 , Mingzhen Zhai 2 , Yin Zhang 1 , Tangyuan Ning 1
Affiliation  

ABSTRACT

This study investigates the sources of water under four modes, namely, normal fields, Raised Fields, single agriculture in Raised Fields, and agroforest system in Raised Fields, by using a combination of δ18O, δ2H and δ13C and their effects on crop yield and water use efficiency. The results show that the soil electrical conductivity of Raised Fields during summer maize seasons was lower than that during winter wheat seasons, and that in the marginal regions was higher than in the central regions, because of the Water Sources. Under agroforest conditions in Raised Fields, Soil Salinity can be reduced because approximately 10% of the water originates from tree trunks. The biomass yield and intrinsic water use efficiency of winter crops under agroforest was 15.1% and 5.5% higher than that under single agriculture, respectively. Thus, soil salinization can be reduced and productivity can be increased by controlling the Water Sources in ecosystems.



中文翻译:

水源对高地农田和农林复合系统土壤盐分和生物量生产的影响

摘要

本研究探讨下四种模式中,水的来源,即,正常的字段,架空字段,在高位字段单农业,并且在凸起的字段农林复合系统,通过使用δ组合18 O,δ 2 H和δ 13C及其对作物产量和水分利用效率的影响。结果表明,由于水源的关系,夏季玉米田的耕地土壤电导率低于冬小麦季节,而边缘地区的土壤电导率高于中部地区。在高田的农林条件下,可降低土壤盐分,因为大约10%的水来自树干。农林复合林下冬季作物的生物量产量和内在水分利用效率分别比单一农业下高15.1%和5.5%。因此,通过控制生态系统中的水源,可以减少土壤盐碱化并提高生产力。

更新日期:2020-09-29
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