封丘县农业病虫害专业化统防统治工作实践与发展建议

统防统治,将绿色防控与技术防控相结合,引入高效的施药机械设备,可以满足短时间内大规模田间施药要求,且具备良好的施药针对性、高效性、普遍均匀性,降低农药使用量,提高农药利用率。专业化统防统治,还要充分发挥其他防治技术优势,如生态、物理、生物、化学等手段,以满足对生态环境的保护要求,实现农药减量控害目标。封丘县结合近年来专业化统防统治工作实际,树立“公共植保、绿色植保”理念,落实“预防为主、综合防治”方针,加强对县域植物检疫工作的调查,制定和完善统防统治措施,为农业生产保驾护航。本文着重阐述当前封丘县统防统治工作概况,就存在问题进行分析,并提出发展建议,推动专业化统防统治工作再上新台阶。

农作物病虫统防统治工作的探讨

近年来,随着农业发展受国家相关部门重视程度的不断提高,如何提高农作物产量也成了各个农业部门所面临的一项重大课题。病虫害作为农作物产量的重要影响因素,一旦发生,势必会给农作物的安全生产造成威胁,因此,做好科学合理的统防统治工作非常重要。文章当前农作物病虫统防统治工作中存在的问题进行介绍,并在此基础上对该项工作的完善措施进行探讨,以此来确保农作物的安全生长。

Logical Design and Control of Network in Local Mine Air-Reversing System

This paper sets up a mathematical model of switching network and switching function by utilizing graph theory to describe the logical function of different paths.The function varies with open and closed states of air doors in a complex mine air sub network, and the computer program for solving the switching function of complex networks are offered. It gives the method for discriminating a reversible branch in a complex network by means of the switching function, and the method of counter inverted logical control of airflow inversion by means of open and short circuit conversion of key branches. The research has solved the problem of the stablization of air flow for normal ventination and reversing ventination in a diagonal network.