Combined organic ameliorants is benefits for improving ecosystem multi-functionality in saline soils

IF 6.2 1区农林科学 Q1 AGRICULTURAL ENGINEERING

Industrial Crops and Products Pub Date : 2025-04-28 DOI:10.1016/j.indcrop.2025.121068

Jiashen Song , Hongyuan Zhang , Amit Kumar , Fangdi Chang , Ru Yu , Xiangqian Zhang , Jing Wang , Weini Wang , Junmei Liu , Jie Zhou , Yuyi Li

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Abstract

Globally, soil salinity is among major challenge for agricultural production in arid and semi-arid regions. Although organic ameliorant has profound effects on saline soil quality, how soil quality index, crop productivity, and ecosystem multi-functionality respond to combined organic ameliorants remains unclear. Herein, a 3-year field experiment was conducted and included six treatments (no organic ameliorant, humic acid, biofertilizer, manure, combination of humic acid and manure, combination of biofertilizer and manure) organized into a randomized complete block design. In relative to other organic ameliorants, combination of humic acid and manure improved soil quality index by 29–74 % and sunflower yield by 7–34 % in 2020–2022, with soil quality indexes explained the variance of crop productivity by 67.86–81.35 %. The improved soil quality and yield further increased ecosystem multi-functionality, while the effects of soil quality on ecosystem multi-functionality was stronger than yield on ecosystem multi-functionality. Compared to other organic ameliorants, ecosystem multi-functionality under combination of humic acid and manure increased by 51–87 %. Besides, the effects of combined humic acid and manure on SQI and EMF were higher than the sum of that under humic acid and manure alone. In conclusion, the combined humic acid and manure was more beneficial to improve ecosystem multi-functionality by enhancing soil quality and crop production in saline soils, and contributed to agricultural production in arid and semi-arid regions.

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复合有机改良剂有利于改善盐渍土生态系统的多功能性

在全球范围内，土壤盐分是干旱和半干旱地区农业生产面临的主要挑战之一。虽然有机改良剂对盐渍土质量有深远的影响，但土壤质量指数、作物生产力和生态系统多功能如何响应有机改良剂组合仍不清楚。为此，我们进行了为期3年的田间试验，将6个处理（无有机改良剂、腐植酸、生物肥料、粪肥、腐植酸与粪肥配施、生物肥料与粪肥配施）组织成随机完全区组设计。与其他有机改良剂相比，腐植酸与有机肥配施在2020-2022年土壤质量指数提高了29-74 %，向日葵产量提高了7-34 %，土壤质量指数对作物产量变化的贡献率为67.86-81.35 %。土壤质量和产量的提高进一步增强了生态系统的多功能性，但土壤质量对生态系统多功能性的影响强于产量对生态系统多功能性的影响。与其他有机改良剂相比，腐植酸与粪肥复合处理的生态系统多功能性提高了51 ~ 87 %。此外，腐植酸与粪便复合处理对土壤SQI和EMF的影响大于腐植酸与粪便单独处理的总和。综上所述，腐植酸与粪肥配施更有利于盐碱地改善生态系统的多功能性，提高土壤质量和作物产量，对干旱半干旱区的农业生产有促进作用。

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来源期刊

Industrial Crops and Products 农林科学-农业工程

CiteScore

9.50

自引率

8.50%

发文量

1518

审稿时长

43 days

期刊介绍： Industrial Crops and Products is an International Journal publishing academic and industrial research on industrial (defined as non-food/non-feed) crops and products. Papers concern both crop-oriented and bio-based materials from crops-oriented research, and should be of interest to an international audience, hypothesis driven, and where comparisons are made statistics performed.