With the rapid development of our social economy and the upgrading of the construction of the urban and rural integration, the new rural construction in our country agricultural development gradually to wisdom, presents a new atmosphere of wisdom agriculture construction of [1]. Wisdom agriculture is fully application of modern information technology, remote diagnosis, remote control, agriculture visualization disaster early warning and other intelligent management process.

Wisdom agriculture is short for intelligent agricultural expert system, is the fusion of science and technology in agricultural development in the field of practice and application. Internet technology is the core of the wisdom of agricultural technology, one of the "wisdom agriculture" in the Internet of things technology can be divided into three types: sensor technology, information transmission technology and information decision. Wisdom agriculture is the main trend of the future agricultural development in our country, is the development direction of future agriculture, with the further development of information technology, Internet of things technology will get a wider range of application.

With the rapid development of our social economy and the upgrading of the construction of the urban and rural integration, the new rural construction in our country agricultural development gradually to wisdom, presents a new atmosphere of wisdom agriculture construction of [1]. Wisdom agriculture is fully application of modern information technology, remote diagnosis, remote control, agriculture visualization disaster early warning and other intelligent management process. Internet technology is the wisdom agriculture one of the core technology of [2].

1 what is the "wisdom agriculture"

Wisdom agriculture is short for intelligent agricultural expert system, generally refers to the use of the Internet of things technology, "5 s" technology, cloud computing and big data and other information technology to realize "three agriculture" industry of digital, intelligent, low carbon, ecology, intensive, from the space, organization, management, integration of existing agricultural infrastructure, communications equipment and information technology facilities, to realize efficient agriculture, intelligence, wisdom, fine harmonious development and sustainable ecological development, is the fusion of science and technology in agricultural development in the field of practice and application [3-5]. Specifically, li hui and other [6], points out that agriculture is the use of modern computer technology and the Internet means wisdom and platform, through expert experience and the guidance of the expert system, quantitative simulation, digital processing and decision-making, crop growth and supply, the whole process of intelligent, digital and information technology, the realization of agricultural information collection, processing, processing and evaluation analysis of modern, scientific and intelligent goal, is the one of the direction of future development, China's agriculture is an important part of realizing agricultural modernization. Based on this, and put forward the building intelligence agriculture theory system and structure and application measures [7].
 

2 what is the "Internet of things"

Internet of Things (the Internet of Things, IoT for short) is put forward in 1999, the concept of the 2005 international telecommunication union (ITU) ITU Internet report, released on the Internet of Things to do the following definition: by qr code read device, radio frequency identification (RFID) device, infrared sensors, global positioning system (GPS) and laser scanner and other information sensing device, according to the contract agreement, to any item connected to the Internet, information exchange and communication, in order to realize intelligent identification, location, tracking and monitoring and management of a network [8]. Internet of things is listed as one of the five emerging strategic industries in our country, at present, the Internet of things technology has been widely used in the field of intelligent agriculture [9].

3 the Internet of things technology application status in agriculture

Now, the network technology have said goodbye to the city's unique exclusive, this phenomenon has gradually into the towns and villages. Had appeared in our country, some of the more developed towns optical networks, network television also gradually door, basically realized the popularization of network technology. The popularization of Internet technology, the wisdom of our country agriculture development laid a solid technical foundation, provides the public with good sales channels and agricultural crops research data information, further improve the efficiency of crop production. At the same time, also helped the masses of peasants to solve the agricultural marketing difficult the problem, is conducive to help the farmers' income [10].

Now "wisdom agriculture" in the Internet of things technology can be divided into three types: sensor technology, information transmission and information decision.
 

3.1 sensor technology

Used as the sensor technology of agriculture is the technical foundation and guarantee for "intelligent agriculture", it implements the real-time gathering, recording and transmission of information, make the agricultural equipment and intelligent equipment. The moment is focused on and put into use of sensor technology are: MEMS micro sensor technology, optical fiber sensor technology, detection technology and hyperspectral bionic sensor technology, etc. [11]. These sensors technology can achieve the whole chain of wisdom agriculture data acquisition, monitoring and transmission. In the prenatal stage, to the agricultural environment and seedling breeding, etc. Comprehensive data collection and comparison. Greenhouse gases such as air, the concentration of O2, CO2, CH4, C2H4, etc, to monitor the temperature, humidity, moisture and fertility of the soil, etc., to ensure environmental conditions at the best status of planting, grazing and cultivation, and using GPS navigation fine quantity sowing seeds, precise field management; In during phase, using RFID (radio frequency identification), GIS (geographic information system) and GPS (global positioning system (GPS) technology, such as the growth of plants and animals, the activity location, disease early warning, treatment and monitoring, disaster early warning and control information and data such as all-weather, real-time feedback, analysis, and records; In the postpartum period, to the harvest, harvest, such a continuous data acquisition, processing, to provide information for after sales and trading chain [12].

Sensor technology is, as it were, the digitalization, precision, the intelligent wisdom agriculture one of the most key factors.

3.2 information transmission technology

Mature and rolled out depends on the stability of the sensor technology of information transmission technology, mainly is the wireless sensor network (WSN) technology is widely used in the "wisdom of agriculture". WSN technology to physical world and information world together, with data as the center, the implementation and content, content with a new interaction. Sensor network (WSN) usually consists of randomly deployed in the region of the perception of a large number of nodes resource-constrained. These nodes through self-organization way constitute the wireless network, in collaborative perception, collection and processing network coverage area in specific information, the observer can at any time for any location data acquisition, processing and analysis [13].

3.3 information processing technology

Information processing technology is the last part of the Internet of things technology, is also the foundation of wisdom agriculture to realize automatic control, the application of the technology is cloud computing and decision support system, expert system, geographical information system, intelligent control technology and other technical [14].

3.3.1 cloud computing

Cloud computing refers to the distribution of computing tasks in a pool of resources, make application system according to the need for storage space and software service. In the face of large amounts of data in agricultural wisdom, cloud computing can realize information distributed Shared memory resources and computation ability, super powerful information processing ability can provide large amounts of information processing with support [15].

In recent years, our country began to cloud computing applications in agricultural production, and its application in agricultural field was studied. Current agricultural experience of cloud platform includes agricultural information intelligent search and service platform and the green cloud platform, through the two platform to realize the agricultural market information and accurate acquisition and analysis of practical technology, for the agricultural departments, enterprises and individual farmers to provide personalized retrieval, at the same time provide a full range of agricultural production environment remote management service (16-20).

3.3.2 rainfall distribution on 10-12 decision support system

Decision support system in human-computer interaction way for semi-structured or unstructured decision-making. Agricultural decision support system in agricultural water-saving irrigation optimization, large chicken factory management, the cultivation of wheat, design of feed formulation optimization, agricultural mechanization information management, soil information system management was carried out on the widely used research [21]. Agricultural decision support system for local agricultural production process is analyzed and simulated, predicted the effect of different decision schemes and benefit, so as to optimize the agricultural production decision. The decision support system technology in agricultural structure optimization, production forecast and potential analysis, determine the scale of investment in agriculture is widely used in such aspects [22].
 

3.3.3 expert system

Expert system to simulate human experts to solve all kinds of complex practical problems, have the same ability to solve problems with expert level. The system in use of agricultural experts, on the basis of many years of accumulated knowledge and experience, the agricultural problems need to solve the analysis judgment, decision is put forward, make the computer in the agricultural production have the effect of human agricultural experts [19]. For example, the application of expert system in pickle pest control, provides the plant diseases and insect pests for farmers, science and technology personnel information exchange platform, provides farmers with pest control scientific guidance, practical significance [20] significantly.

3.3.4 geographic information system

Geographic information system is mainly used for establishing natural conditions, production conditions, soil data and development trend of crop disease cordyceps harm, crop production, such as spatial information database, analysis of differences and implementing regulation to provide decision-making solutions [17]. Using geographic information system for soil suitability evaluation is the soil texture, type, NPK content, organic matter content, such as land data integration, and given the weight, then analyzes operation, generate soil suitability evaluation map, also can establish mathematical model, the implementation of land suitability classification [18].

3.3.5 intelligent control technology

Intelligent control technology is mainly used to solve by the traditional methods can't solve the complex problem smoothly. At present the main research direction of intelligent control technology including neural network control and fuzzy control, integrated intelligent control technology, and in the horticultural facilities, field planting, livestock farming, etc have a preliminary application [22].
 

4 look

Wisdom agriculture is the main trend of the future agricultural development in our country, is the development direction of future agriculture, with the further development of information technology, Internet of things technology will get a wider range of application. Now, you can see the Internet of things technology to bring more intelligent and wisdom agriculture informatization, and have to do now is to promote agricultural independent innovation ability of the Internet of things, to speed up the low cost and high reliability, service life long sensor development, strengthen the Zig - Bee technologies such as new wireless transmission technology application in agricultural research, improve the practicability and reliability of intelligent decision-making system, through a single technological breakthrough and a number of technology integration application, accelerate the pace of technology development and application, based on the wisdom of the Internet of things of agriculture can be widespread use in rural areas, this is the trend of future agriculture in our country and the target [14]. In the future, the Internet of things will make agriculture more "wisdom".

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