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Shandong Province is the locust plague of locusts retransmission areas infested area. Locust outbreaks in recent years, year after year, the province invested locust control pesticides annually nearly 1000 tons, costing thousands of yuan. So the research of Shandong Province locust outbreak affecting a key factor and governance of new technologies for the protection of Shandong Province steady agricultural production is important. Based on field surveys of Shandong Province and the recent locust locust control situation occurs pooled analysis, the basic clear Shandong locust distribution, occurrence and control situation. By happened since the founding of Shandong Province locust control analysis of historical data and a large number of experimental observations, the initial impact of Shandong Province to find out the key factors that occur locust. Explore the locust control of new technologies, and take effective measures to promote the application of the initial formation of ecological management, biological control and chemical control of locust combination of new comprehensive management technology system. The main conclusions are as follows: 1, after a survey showed, Shandong existing locust breeding area of ??567,500 hm ~ 2, distributed in 8 cities 31 counties (cities, districts). According to the ecological environment characteristics locust, locust into coastal Shandong Province, locust, locust lakeside, river flood and waterlogging locust locust four types. Since the late 1990s, Shandong locust occurrence area was increasing trend, with an average population density is also showing a rising momentum. Since locust outbreaks, control area also increased with the occurrence of a substantial increase in the area, along with efforts to increase prevention, control area of ??the occurrence area ratio is also rising. 2, the number of locust eggs overwinter survival, hydrology, temperature and vegetation coverage affecting locust locust occurrence of several key factors. Size and number of locust eggs overwinter survival level, is a key factor affecting locusts occurred, the number of locust eggs and overwintering survival and proportional to the amount of locusts occurred. Hydrological impact on locust locust mainly affect the growth and development through environmental work, precipitation, the Yellow River flows and lake water level and occurrence of locusts was negatively correlated. The impact of temperature on locust 11,12 major winter temperatures in May and January of locust eggs safe winter impact, the higher the temperature, the higher the locust eggs overwinter survival rate, the greater the amount locusts occur. Vegetation cover on the locust locust habitat impact, vegetation cover more than 70%, not suitable for locust eggs, under certain conditions, vegetation coverage is lower, more suitable for locust eggs, locusts The higher the density. 3, ecological management and biological control techniques, the control efficiency continued good environmental pollution, no killing effect on locust predators is long lasting stability control locusts most fundamental technical measures. Deadly chemical pesticides, quick result is good, in the Year of the outbreak emergency prevention chemical control is the most effective measures. However, serious environmental pollution chemical pesticides, poor selectivity for locust deadly predators, locusts easy to produce drug resistance. Screening efficiency and low toxicity of chemicals, with the use of multi-species, is an effective way to resolve these contradictions.
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