Effects of Chinese Medicine Residue Vermicompost Application on Pakchoi Yield and Nutrient Content

2014 ◽  
Vol 1073-1076 ◽  
pp. 689-692
Author(s):  
Yu Wei Wang ◽  
Dong Wei Yang ◽  
Yi Hang Duan ◽  
Li Juan Yang ◽  
Yao Jing Wang

In this study, we conducted a series of pot experiments to examine the effect of Chinese medicine residue vermicompost on yield and nutrient content of pakchoi. Vermicompost was proved to be effective in increasing yield and nutrient uptake by the results. The study showed that half vermicompost and half fertilizer works best, 9.86% higher than single fertilizer, with NPK content increased by 3.85%, 7.69% and 11.48%. In addition, the application of vermicompost improved the chlorophyll content of pakchoi. The study indicated that vermicompost, as an environment-friendly fertilizer, has great potential to assure the sustainable development of agriculture.

Forests ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 65
Author(s):  
Shixin Deng ◽  
Kankan Shi ◽  
Jiang Ma ◽  
Lili Zhang ◽  
Luyi Ma ◽  
...  

Through this study, the most suitable fertilization ratio, amount and frequency were determined, providing a scientific reference for further fertilization management for Magnolia wufengensis (Magnoliaceae) seedlings. Fertilization is an important cultivation and management measure to maintain forest seedling health and rapid growth. However, improper fertilization can also have unexpected effects: inhibiting seedling growth, increasing the cost of production and contaminating the environment. Thus, to explore the most suitable fertilization treatment for Magnolia wufengensis growth, one-year-old Magnolia wufengensis seedlings and the orthogonal design method were used in this study. Three different fertilization frequencies were used combined with 9 NPK ratios. The growth index, chlorophyll content, nutrient content in tissues, nutrient transport efficiency, nutrient uptake, and soil properties were analyzed. Fertilization can increase chlorophyll content, promoting the vegetative growth and biomass accumulation of Magnolia wufengensis. Fertilization reduced the proportion of root biomass to whole plant biomass, resulting in an increase in stem biomass with little effect on leaf biomass. Additionally, fertilization also increased the proportion of N in roots, P in stems and K in leaves. Under fertilization, the K transport efficiency was higher than that of N and P. Furthermore, there was a positive correlation between the nutrient use efficiencies of N and K. Overall, the effects of six fertilizer applications were much better than those of four and eight fertilizer applications on the promotion of vegetative growth, biomass and nutrient accumulation, nutrient uptake and transport efficiency. The results showed that six fertilizer applications with an NPK ratio of 3:2:1 as follows: N application at 480 mg/plant, P application at 320 mg/plant, and K application at 160 mg/plant was the most suitable fertilization method for plant growth.


2014 ◽  
Vol 1065-1069 ◽  
pp. 826-829
Author(s):  
Shu Guang Yao

Compared with hot mix asphalt (HMA), warm mix asphalt (WMA), which reduces the mixing and compaction temperatures and energy consumption and emissions, while maintaining the quality of HMA , is a new energy-saving and environment-friendly paving material, with a broad prospect.In order to develop the warm mix asphalt and prompt the sustainable development of pavement, some kinds of warm mix agent are summarized as follows.


2013 ◽  
Vol 742 ◽  
pp. 432-436
Author(s):  
Wei Fan ◽  
Gai Zhen Shang

In this study, from the point of view of the ecological environment of the modern rural analysis and research on rural, ecological environment as the research object,Research programs under the overall guidance of the sustainable development strategy, the Anxin county Liulizhuang Town DongBaiZhuangBeiDui village and environmental symbiosis, in harmony with the natural the rural ecological landscape method. And to strengthen the sustainable development of the ecological environment of the Anxin county Liulizhuang Town DongBaiZhuangBeiDui village, urban and rural, regional development, and comprehensively promote the construction of a new socialist countryside and build a resource-saving, environment-friendly harmonious society to provide certain theory reference.


2011 ◽  
Vol 71-78 ◽  
pp. 1307-1310
Author(s):  
Hong Xu

Wuhan city circle or Wuhan"1+8" city cluster area is one of the most important development strategies of city group in the central China. Wuhan"1+8" city cluster area has brought unprecedented opportunities and challenges to sustainable development by a comprehensive reform in a special resource-saving and environment-friendly society policy. The ddevelopment of Wuhan"1+8" city cluster area not only benefit the development of Hubei Province, but will also have a positive impact on the surrounding provinces such as Hunan, Henan, Jiangxi, and Shanxi. This paper discusses the opportunities and challenges of sustainable development in Wuhan"1+8" city cluster area from several perspectives and provides some suggestions and policies for the sustainable development in Wuhan"1+8" city cluster area


2012 ◽  
Vol 610-613 ◽  
pp. 452-456 ◽  
Author(s):  
Shao Hua Yin ◽  
Wen Yuan Wu ◽  
Feng Yun Zhang ◽  
Qiang Zheng ◽  
Xue Bian

It is a main problem that environment can be polluted by discharge of wastewater containing NH4+, Ca2+ and Na+, when rare earths (REs) are extracted in a saponified system using di-(2-ethylhexyl) phosphoric acid (D2EHPA). Pointing to this problem, the selective separation of Pr(Ⅲ) by liquid–liquid extraction using D2EHPA in the presence of a complexing agent of lactic acid (LA) has been studied. Results are shown that the maximum of separation factor (β) between Pr/Ce is 2.04 and extraction selectivity is also enhanced when compared with that of D2EHPA–HCl system. The thermodynamic function △H is determined as exothermically driven. The cation exchange mechanism is discussed by IR spectra. Thus, the results suggest that highly selective separation and extraction of Pr(Ⅲ) from a Pr/Ce solution is possible, providing a simple and environment-friendly complexing method for extraction-separation rare earths, and promoting the sustainable development in rare earths practices.of Pr(Ⅲ) from a Pr/Ce solution is possible, providing a simple and environment-friendly complexing method for extraction-separation rare earths, and promoting the sustainable development in rare earths practices.


2015 ◽  
pp. 147-160 ◽  
Author(s):  
S. Bobylev ◽  
N. Zubarevich ◽  
S. Solovyeva

The article emphasizes the fact that traditional socio-economic indicators do not reflect the challenges of sustainable development adequately, and this is particularly true for the widely-used GDP indicator. In this connection the elaboration of sustainable development indicators is needed, taking into account economic, social and environmental factors. For Russia, adaptation and use of concepts and basic principles of calculation methods for adjusted net savings index (World Bank) and human development index (UNDP) as integral indicators can be promising. The authors have developed the sustainable development index for Russia, which aggregates and allows taking into account balanced economic, social and environmental indicators.


Author(s):  
Aliya Kassymbek ◽  
Lazzat Zhazylbek ◽  
Zhanel Sailibayeva ◽  
Kairatbek Shadiyev ◽  
Yermek Buribayev

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