Real-time Threshold Routing Algorithm Based on Wireless Sensor Network

[Objective] This study was to design an intelligent greenhouse real-time monitoring system based on the core technology of Internet of Things in order to meet the needs of agricultural informatization and intellectualization. [Method] Based on the application characteristics of Wireless Sensor Network （WSN）, the intelligent greenhouse monitoring system was designed. And for the incompleteness strategy of load balancing in the Low-Energy Adaptive Clustering Hierarchy （LEACH）, a Real- time Threshold Routing Algorithm （RTRA） was proposed. [Result] The performance of network lifetime and network delay of RTRA were tested in MATLAB and found that, within the same testing environment, RTRA can save nodes energy consumption, prolong network lifetime, and had better real-time performance than LEACH. The al- gorithm satisfies the crops＇ requirements on real-time and energy efficiency in the greenhouse system. [Conclusion] For the good performance on real-time, the de- signed intelligent greenhouse real-time monitoring system laid the foundation for the research and development of agricultural informatization and intellectualization.

Effects of Tenebrio molitor L.Powder on Growth of Beauveria bassiana

[ Objective] The study aimed to reseamh the effect of Tenebrio molitor powder on the growth of Beauveria bassiana. [ Method ] The larvae of T. molitorwas used as the additive to add in the PDA medium, preparing 7 concentrations including 4, 2, 1,0.5, 0.25, 0.125 and 0.062 5 g/100 ml, the medium without adding any T. molitorlarva was set as control. The indexes such as the growth rate, spore germination rate, mycelium diameter, sporulaUon time, sporulatian quantity and POD activity of B. bassiana were determined. [ Result] Adding T. molitor larva to the PDA medium could increase the growth rate, spore germination rate, sporulation time, sporulatJon quantity and POD actJvity of B. bassiana, while had relatively small effect on spore size and mycelium diameter. The comprehensive evaluation screening showed that the medium with 4 g additive was the best for the growth of B. bassiana, different indexes all had obvious predominance. [ Conclusion] The study provided the basis for using T. molitor to culture B. baasianaa