Search

Your search keyword '"Yuanhong Fu"' showing total 3 results
Start Over Author "Yuanhong Fu"
3 results on '"Yuanhong Fu"'

1. Coupling optimization of water-fertilizer for coordinated development of the environment and growth of Pinus massoniana seedlings

Author

Yuanhong Fu, Guijie Ding, Wenxuan Quan, Xizhou Zhao, and Qinghong Tao

Subjects
Pinus massoniana, Water-fertilizer coupling, Optimization, Interactive effect, Comprehensive model, Agriculture (General), S1-972, Agricultural industries, HD9000-9495
Abstract

A reasonable water and fertilizer supply is key to coordinating nursery stock quality improvement and environmental pollution reduction. Here, the experiment was carried out based on the combinations of four levels of water content (W), substrate available nitrogen (N), phosphorus (P), and potassium (K). The aim was to explore the combining effects of water and fertilizer on the comprehensive growth of Pinus massoniana seedlings, and to obtain the coupling optimization of water-fertilizer. The results indicate that the comprehensive growth index (CGI) of seedlings followed a linear pattern with P and a downward-opening parabola with W, N, and K. The seedling growth was not significantly affected by adjusting the input of other elements when the substrate P ≤ 32.00 mg/kg·dry substrate. Whereas when P was 128.00 mg/kg·dry substrate, the negative effects caused by low water (W was below 45%) could not be alleviated, even if moderate N and K levels were maintained. W and P had direct and significant positive effects on the growth of seedlings, while N and K had negative effects. The combination of 85–91% (W), 65.95–134.27 (N), 128.00 (P), and 215.87–234.00 mg/kg·dry substrate (K) was beneficial to seedling growth. While W of 91% combined with the N, P, and K of 57.39, 88.40, and 123.08 mg/kg·dry substrate coordinated the environmental development and seedling growth. This research showed that P is the key factor affecting the CGI of P. massoniana seedlings. which provides a reference for rational and precise fertilization during the cultivation of P. massoniana seedlings.

Published
2024
Full Text
View/download PDF

2. Effects of solid waste-based soil conditioner and arbuscular mycorrhizal fungi on crop productivity and heavy metal distribution in foxtail millet (Setaria italica)

Author

Wuyan Shen, Zhengjun Feng, Huiping Song, Dapeng Jin, Yuanhong Fu, and Fangqin Cheng

Subjects
Soil, Environmental Engineering, Metals, Heavy, Mycorrhizae, Setaria Plant, Fungi, Soil Pollutants, General Medicine, Management, Monitoring, Policy and Law, Solid Waste, Waste Management and Disposal, Plant Roots, Crop Production
Abstract

Shanxi is a large coal-producing province, and it also produces a lot of solid waste. Solid waste can leach heavy metals, which can harm soil and affect food security at the beginning of the food chain. To investigate the impacts of solid waste-based soil conditioner (SWSC) and arbuscular mycorrhizal fungi (AMF) on millet safety and crop production, a field experiment with foxtail millet (Setaria italica) was conducted in Tunliu. The results of this study demonstrate that SWSC + AMF, SWSC and AMF can increase millet yield by 28.0%, 27.1% and 19.5%, respectively, compared with CK. This is mainly due to increased mycorrhizal infection. Besides, the pollution index (P

Published
2021

3. Physiological and Biochemical Dynamics of Pinus massoniana Lamb. Seedlings under Extreme Drought Stress and during Recovery

Author

Changchang Shao, Honglang Duan, Guijie Ding, Xianying Luo, Yuanhong Fu, and Qing Lou

Subjects
antioxidant, fungi, food and beverages, osmotic adjustment, Forestry, gas exchange, QK900-989, water deficit, rehydration, pine, Plant ecology
Abstract

In recent years, global forests have been facing an increase in tree mortality owing to increasing droughts. However, the capacity for plants to adjust their physiology and biochemistry during extreme drought and subsequent recovery is still unclear. Here, we used 1.5-year-old Pinus massoniana Lamb. seedlings and simulated drought conditions to achieve three target stress levels (50%, 85%, and 100% loss of stem hydraulic conductivity (PLC)), followed by rehydration. Needle water status, gas exchange, and biochemical parameters were assessed during drought and recovery. The results showed that drought had significantly negative impacts on needle water status and gas exchange parameters, with gas exchange declining to 0 after PLC85 was achieved. Soluble protein concentration (SPC), soluble sugar concentration (SSC), malondialdehyde (MDA) content, superoxide dismutase (SOD) activity, and needle water-use efficiency showed fluctuations. The activity of antioxidant enzymes and the values of osmotic regulators were then gradually decreased as the physiological and biochemical functions of seedlings were disturbed. Seedlings showed a stronger ability to recover from PLC50 than PLC85 and PLC100. We conclude that the physiological and biochemical recovery of P. massoniana seedlings is more likely to be inhibited when plants experience increasing drought stress that induces 85% and greater loss of hydraulic conductance.

Published
2022
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results