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Based on the analysis of the bioenergy crop production function of land use, combined with the current situation of Chinese land use, this paper analyzes and discusses the cultivation of energy plants and the bioenergy crop production function of land use. Results show that there is a lot of unused land and marginal land to plant bioenergy crops to perform the bioenergy crop production function of...
By detecting the nutrient elements contents in soil for monitoring the rice growth and conditions of nutrients, a month after fertilization N, P, K and no fertilization in paddy soil have been analyzed by laser induced breakdown spectroscopy (LIBS) technique, which is using a Nd: YAG ns laser at 1064 nm and an eight-channel AvaSpec spectrometer with CCD detector. The characteristic spectra and the...
The transplanter is the core structure of tobacco transplanting machine The working way applied offset-double disk and four-link rotation, for planting seedlings and floating seedlings. After the characteristic coefficient λ >; 1 is the essential condition for designing the transplanter and ensuring the normal operation of the transplanting quality. The values of the design parameters were determined...
Recent advances in sensor and wireless radio frequency (RF) technologies offer vast opportunities for development and application of sensor systems for agriculture. It is the concept of precision agriculture, where Wireless Sensor Networks (WSN) is playing an important part in the handling and managing of water resources for irrigation, in understanding the changes in the crops to assess the optimum...
This paper describes a new automatic image segmentation strategy for segmenting green plants. The final goal is its application in Precision Agriculture. The goal is to identify several classes of greenness coming from the plants. We exploit the performance of several existing approaches so that conveniently combined allow us to design the automatic approach based on non automatic methods. First we...
Heavy metals are important factors influencing plants' growth and physiology, sustainable agriculture and ecological environment. Heavy metal research is thus an important topic in environmental sciences for soil eco-toxicological diagnosis and ecological risk assessment. In this chapter, Transmission Electron Microscope (TEM) was used to investigate the damage of wheat seedlings caused by lead and...
Compost derived from mix manures, shopped Leucaena leucocephala de Wit, bran of rice, molace, fish fermented juice were studied their humification process by using humic acid quantity and its functional groups, which were phenolic and carboxylic groups. Samples were collected for all analysis at day 0, 7, 14, 21, 28, 35, 49, 63, 77, 91, 105, and 119. The results showed that the maturity of compost...
In order to determine efficiency of different cover crops in terms of weed control in citrus orchard, an experiment was conducted during 2009 based randomized complete block design with 7 treatment and 3 replications at Komdarreh region, Amol, Mazandaran province. Legumes cover crops including common bean, white bean, pinto bean, red bean, cowpea, mung bean, lentil and common pea were the treatments...
Wheat is one of the most important crops in the world. So the safety of wheat product is essential to people's health. With imitating experiment of arsenic polluted soil in pots, effects of nitrogen and phosphorus fertilizers on yield and quality characters of wheat were studied, and arsenic contents of wheat root, stem, grain and soil were determined detailedly. The effective measures by adding nitrogen...
A pot experiment was conducted to examine cadmium (Cd), zinc (Zn) and nickel (Ni) bioavailabilities in arid oasis agricultural soils. Celery (Apium graveolens) was selected as the tested plant. The chemical forms of the metals in soils were characterized by sequential extraction analysis technique. The results showed that in uncontaminated arid soils, Cd, Zn and Ni existed predominantly in the less...
The effect of lanthanum and growth of Lolium perenne on the distribution of different forms of copper in copper tailings was studied by pot experiments. The results showed that, the growth of Lolium perenne on the soil significantly enhanced the copper contents of exchangeable, carbonate combined, Fe-Mn oxides combined and organic combined forms of copper compared to the control group which without...
To obtain soil water balance components in root zone of winter wheat, a numerical model and a water-balance model were established and compared in this study based on existing research results and field experimental data of winter wheat seasons from 2007 to 2009 in Shijing Irrigation Scheme in Hebei province, China. The results are as follows :( 1) Mean Sum of Residuals Fraction (MSRF) and Root Mean...
Based on morphogenesis model, driven by ΣTU (Accumulated Thermal Units), soil, variety and management databases and developed the process-based muskmelon dynamic growth simulation system using component-based software technology. The system was programmed in the .NET framework with the C# language and the database was built in Access 2003. The implemented system could be used for predicting growth...
A 2-year field experiment was conducted in 2007, 2008 to investigate the effects of subsurface drip fertigation strategies on bell pepper yield and root distribution. Two irrigation cycles of 4 days and 8 days (C4,C8) and four nitrogen application levels of 0,75,150,300 kg N·ha-1 (N0,N75,N150,N300) comprised the irrigation and fertigation treatments. The experimental results showed that the total...
The wireless sensor network, which refers to the combination of sensors, embedded system, MEMS, distributed information processing and wireless communication network has become a hot topic in the research field because of its wide application prospect. This paper propose the design of an environmental monitoring system for valuable medicinal herb growing based on wireless sensor network, which gives...
On the basis of the estimation process of crop output potential and taking county as a unit, the paper sorted out attribute data of meteorology, soil, and society production, and spatial data in 30 counties of Henan Province, built the integrated space-attribute database, designed system structure by adopting C/S and B/S, and developed GIS-based estimation system about wheat output potential in county...
Soil moisture is one of the most important factors which affect crop yields directly. In recent years, although upland field area increased not too much, agricultural water resources utilization increased which has led to a waste of water resources in Sanjiang Plain. In order to solve the above problem, wavelet de-noising theory and time series analysis are adopted to analyze measured data of soil...
In this paper, a combination of neural networks and genetic algorithms have been used to predict and maximize lemon grass oil production. The best combinations could be assessed for N+P2O5+ZnSO4 (Kgha-1) as 89.03 + 60.00 + 40.65, 114.84 + 60.00+33.39, 120.00 + 54.84 + 42.10 and 120.00 + 60.00+45.00 respectively for maximum oil production. Contribution of each nutrient combinations is also identified.
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