Based on the regional difference in soil fertility,the nutrient uptake of crop,the nutrient supplying capacity of soil and the response of fertilizers,etc.,this study took the 81 th regiment of the 5th agricultural di...
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Based on the regional difference in soil fertility,the nutrient uptake of crop,the nutrient supplying capacity of soil and the response of fertilizers,etc.,this study took the 81 th regiment of the 5th agricultural division in Xinjiang Bingtuan as the training and cooperative region,and established the information system of soil nutrients for cotton fields and recommendation model of *** comprehensive,digital and intellectualized WEBbased cotton fertilization recommendation and information management decision support system by using SQL+JSP+*** system had been applied successfully in 2005 and 2006 there,and in 2006 the mean yield per hmincreased by 7.3%than that of former 3 years,and the fertilizer cost per hmreduced 114 yuan（RMB）.
In profits from the domestic and foreign successfull experience fully,this paper creates an informationization talented person training pattern of the countryside area in China which includes the leadership training s...
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In profits from the domestic and foreign successfull experience fully,this paper creates an informationization talented person training pattern of the countryside area in China which includes the leadership training stage,the information officer training stage and the populace popular stage,and explains the training main body,the training object and the training way and so *** order to carry on this pattern healthily and effectively,this paper proposes six big principles that should be persisted,namely the principle of adjusting measures to local conditions and the prominent characteristic,innovation methods and the principle of stressing practical results,combination of regular and nonperiodical training,centralism training and long-distance training,participation of international society and the relevant enterprise,schools and students.
To achieve the unification of precise irrigation management,the system integrated GSM wireless communication technology,sensor technology,computer technology,automatic monitoring,and control technology in the study **...
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To achieve the unification of precise irrigation management,the system integrated GSM wireless communication technology,sensor technology,computer technology,automatic monitoring,and control technology in the study *** system included the acquisition subsystem,the intelligent decision subsystem,and automatic control subsystem,with the advantages of the GSM internet,such as wide coverage area,powerful property of antiinterference,the remote data transmission was *** application of Java development platform and SQL Server 2000 achieved processing of real-time *** testing and applicating,the system improved management level of agricultural water-saving irrigation for different accumulated temperature region,planting crops,soil type in Heilongjiang Province.
Teed lines are widely used in rural power networks in *** paper theoretically analyzes the voltages and currents when a single line-toground fault occurs,constructs a new mathematical model for fault location on the t...
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Teed lines are widely used in rural power networks in *** paper theoretically analyzes the voltages and currents when a single line-toground fault occurs,constructs a new mathematical model for fault location on the teed lines,performs corresponding MATLAB *** results show that currents near the source(bus M) are almost independent of fault positions and fault ***,voltages at bus M are sensitive to fault positions while fault voltages at fault position are only sensitive to transient resistances.A novel approach to fault location on teed lines is ***,the faulted line is identified with remote control ***,the transient resistances are calculated according to the fault *** at last,the fault distances are computed according to the voltages at bus M and the calculated transient resistances.
The piston performance affects the performance of the *** order to forecast the piston performance effectively,the performance forecast model based on BP neural network is *** to the characteristics of piston performa...
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The piston performance affects the performance of the *** order to forecast the piston performance effectively,the performance forecast model based on BP neural network is *** to the characteristics of piston performance,the training samples are made up of the orthogonal experimental data,which are utilized to ensure higher generalization of BP neural *** then the trained BP neural network is used to forecast test *** the same time,the value of test samples is compared with the output of BP network model *** results show that the output precision of BP neural network is high,and using the BP neural network to forecast the piston performance is practicable and effective.
In this paper,through the research on two-dimensional bar codes of food source tracking;a set of traceability tracking system was designed based on the two bar coding algorithm and decoding *** system could generate P...
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In this paper,through the research on two-dimensional bar codes of food source tracking;a set of traceability tracking system was designed based on the two bar coding algorithm and decoding *** system could generate PDF417 code based on food production,logistics and transport,supermarket and other storage *** could identify PDF417 code through a client based on B/S architecture so that a simple process of food traceability has been completed.
According to space constraints of the traditional agricultural environment monitoring system,a small database called SQLite was transplanted into the ARM and Linux operation which could store and manage the field *** ...
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According to space constraints of the traditional agricultural environment monitoring system,a small database called SQLite was transplanted into the ARM and Linux operation which could store and manage the field *** can get information anytime and anywhere through the GSM(Global System for Mobile Communications) network and the WSN(Wireless Sensor Network) by this design,instead of inquiring data from the PC(Personal Computer) which was widely used *** embedded in the environment,information spread in the air and captured by the handheld instruments,which is a typical application of pervasive computing.
Since chili pepper plant size directly reflects the state of plant growth,a method for pepper measurement of plants size was discussed *** plants were shot from above once per week in the greenhouse since being field ...
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Since chili pepper plant size directly reflects the state of plant growth,a method for pepper measurement of plants size was discussed *** plants were shot from above once per week in the greenhouse since being field planted in *** method of processing the pepper plant images was studied,in which the image segmentation of combination of color space and the image morphological operations were *** the major axis and minor axis of pepper plant,for describing the size of the plant,were calculated from single connected component in the image being *** to the method,a program for pepper plant size measurement based on MATLAB was *** results have demonstrated that the method is more reasonable and accurate than artificial measure.
Soil moisture forecast model based on genetic neural network is established because the soil moisture forecasting is nonlinear and *** weights and threshold value of BP network are optimized according to the total sit...
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Soil moisture forecast model based on genetic neural network is established because the soil moisture forecasting is nonlinear and *** weights and threshold value of BP network are optimized according to the total situation optimization ability of genetic algorithm,which can avoid effectively that BP network is vulnerable to run into the local minimum value as its poor total optimization *** model is applied to Hongxing farm in Heilongjiang Province to predict the soil *** forecasting result shows that the model has favorable forecasting precision,which indicates that the genetic neural network model is feasible and effective to predict the soil moisture.
Food safety has become an important food quality *** food industry and authorities need to be able to trace back and to authenticate food products and raw materials used for food production to comply with legislation ...
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Food safety has become an important food quality *** food industry and authorities need to be able to trace back and to authenticate food products and raw materials used for food production to comply with legislation and to meet the food safety and food quality *** is increasingly becoming a necessary task in the food industry which is mainly driven by recent food crises and the consequent demands for transparency in the food *** is leading to the development of traceability concepts and technologies adapted to different food industry *** content of this paper include several aspects such as overseas food traceability system present conditions and development,food traceability system present conditions,problems and prospect in China,put forward the main measures of pushing on food traceability system of china.
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