Full
Outline
To clarify the effects of different mulching measures on the soil microecology and spring wheat yield in dryland terraces of Longzhong, a field experiment was conducted at the Dingxi Experimental Station of the Gansu Academy of Agricultural Sciences. A single-factor randomized block design was adopted with three mulching treatments: plastic film mulching (PM), straw residue mulching and incorporation (SR), and strip mulching with intact straw (SM), with no mulching (CK) as the control. The changes of these mulching measures on soil physicochemical properties, enzyme activities, ecosystem multifunctionality (EMF), and spring wheat yield were investigated. The results showed that, compared with CK, SR treatment significantly increased soil organic carbon, total nitrogen, total phosphorus, available nitrogen, and available phosphorus contents by 18.4%, 16.9%, 14.6%, 16.6%, and 12.7%, respectively. SM treatment significantly increased soil organic carbon, available nitrogen, and available phosphorus by 13.3%, 28.4%, and 9.6%, respectively. All three mulching treatments significantly improved soil water content, with the highest increase observed under PM (93.3%). SR treatment had the most pronounced effect on soil enzyme activities, followed by PM and SM. The ranking of soil EMF was SR>PM>SM>CK. PM and SR treatments significantly increased spring wheat yield by 13.4% and 18.2%, respectively. Overall, straw residue mulching and incorporation proved to be the most suitable mulching practice for the region.
114
28
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
