Tentatively Research On Simulation Methods Of Frost And Freeze Injury In Winter Wheat And Intergration With IOT

Wheat is one of the most important grain crops in China, the acreage and the total production is next only to rice and maize, wheat is about 20% proportion of the total amount of grain consumption. More than 80% of wheat in planting structure is the winter wheat. However, due to its long growing period, there will be extreme temperatures and temperature surges and sags and other problems while in the winter, so the environmental conditions may be tremendous change which bring about serious impact on its production and threaten the grain safe. The simulatin system of frost and freeze injury in winter wheat can master temperature change timely in wheat plant environment, and strengthen frost disaster and freeze injure fast and accurate monitor and early warning, which bring about more time for the users to adjust the wheat production management solutions based on field conditions and disasters. Therefore, it would make great sense to strengthen the research for frost damage simulated early-warning system to improve winter wheat production management level to achieve production increased.This study rely on the Ministry of Agriculture’s public welfare industry scientific research special project subject(200903010) “the key technology of wheat’s digital remote monitoring and diagnostics management project”, Department of Agriculture(948) Program(2011-G9) "Chinese agricultural introduce the key technologies for adaptation to climate change" and the project "the management technology and demonstration for the major agrometeorology disaster prevention and control " was under " The Twelfth Five-Year Guideline"(2011BAD32B03),which was led by the Chinese academy of agricultural sciences institute of agricultural environment and sustainable development who provided the remote monitoring equipment. This study systematically analyze the Canadian FROSTOL model and make a discussion of the feasibility of combination between the crop model and the internet of things. Based on crop model and IOT technology, design and establish the simulatin system of frost and freeze injury in winter wheat.This study make a deep study on FROSTOL model, and analyze the basic principle of the model and operation mechanism. According to the FROSTOL model internal algorithm combined with practical application, set up a new simulation modules of the system. Analyzed technical characteristics as well, make full use of the features and advantages of data acquisition,transmission and other aspects of crop model and reclassified, a internal frame combination between crop model and analog system to reflect the functional characteristics of simulation system.The design program for the system major use B / S mode(Browser / Server), using languageC under the.NET environment compiler running. Combined with previous research on the WEB server is running a series of supporting software applications and information to improve data collection, processing and storage. Simulation system is user-friendly, suitable and compatible which is good for follow-up development.Simulation system consists of data collection and transmission, disaster simulation warning,system management, user management and application help application help, 5 moduls in total.These module is responsible for implementing dynamic data of the remote receive, operations,frost disaster simulation and user management operations. Through agricultural internet of thing monitor data to transmit analog computing center, according to the simulation and compared with the measured temperature value crops LT50 to define the occurrence of frost damage in winter wheat, make early warning to provide technical support for preventing and mitigating disaster.