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Sunflower moth Homoeosoma nebulellum Denis et Schiffermuller (Lepidoptera: Pyralidae) is a major pest of sunflower production. In Inner Mongolia, Jilin, Heilongjiang and Xinjiang sunflower main producing areas and cause damage have occurred over a significant yield losses. For local economic development and seriously affected the income of farmers, the development of sunflower industry being a huge threat. In order to better clarify the sunflower moth infestation in our law, to develop and improve its forecasting and monitoring technology to provide a scientific basis, the paper sunflower moth infestation in our more serious sunflower main producing region of Inner Mongolia Bayannur (N41.09 °, E107.22 °) for sunflower moth host range instars indoor and field developmental duration of infestation period, wintering habits and laws, life history characteristics, spatial distribution of larvae and sampling techniques and indicators for prevention studies, the main results obtained are: sunflower moth study identified the main biological properties. Sunflower moth larvae to head width, body width, body length and weight measurement results showed that: there are four larval instars, 1-4 instar larvae head width were 0.295 ± 0.007,0.464 ± 0.006,0.792 ± 0.004,1.216 ± 0.007mm. Instar larvae of the body width value and the body length values along with the increase of age, and there is obviously staggered. The weight of each instar larvae values were 0.160 ± 0.024,1.467 ± 0.128,7.095 ± 0.371,20.535 ± 1.083mg, gluttony period of four larval instar. At 24 ℃, RH70% and L16: D8 measured under the conditions sunflower moth instars developmental duration is: eggs, 4.24 ± 0.04d; 1-4 instar larvae, 3.72 ± 0.09,2.94 ± 0.09,2.94 ± 0.11,3.67 ± 0.10d; pre-pupal stage, 2.76 ± 0.10d; pupal stage, 11.05 ± 0.12d; preoviposition 9.25 ± 1.68d; female and male moths life, 20.82 ± 2.01d and 22.75 ± 2.40d. Study clearly artificial diets on growth and development of sunflower moth, the results showed that: sunflower kernel powder added artificial diet reared sunflower moth larvae life parameters, in addition to duration, other life parameters compared Poitout (1970) formulation is more close to sunflower breeding results. But how to remove the excessive mature sunflower oil, to improve the physical properties of artificial feed, so sunflower moth larvae feeding preferences, in order to shorten the duration of larval rearing and other indoor scale needs further study. Field investigation of the developmental status of host oviposition selectivity found hi sunflower moth adults choose just getting flowers sunflower spawning, spawning increased with the extension of time flowering sunflower decreased 1d after flowering fecundity of the total fecundity of 65.30%, the total amount before spawning 2d fecundity of 81.78%. Therefore, in the field control, in conjunction with sunflower blossom and sunflower borer adult situations dynamic monitoring, forecasting sunflower moth adult eclosion peak and peak spawning take smoke, sex attractant agents to kill adult timely way, so that they will Sunflower on spawning, will be nipped in the sunflower moth infestation ago. Research clearly sunflower moth host range, field population dynamics and life history characteristics. Through field survey in 2008-2009 found that: sunflower moth in areas infested Bayannur Asteraceae sunflower (Helianthus annuus L.), Chrysanthemum (Chrysanthemum coronarium Mill.), Cephalanoplos (Cephalanoplos segetum (Beg.) Kitam) and endive (Sonchus brachyotus DC), which endive host as sunflower moth was first reported in the country. Sunflower moth in the region, two generations a year, which began in late April, overwintering larvae pupate, see the beginning of the overwintering generation period is May 16, but this time due to lack of flowering emerged adults unable to spawn host hazards, 6 months late as the beginning of the overwintering generation adult emergence peak in early July for the emergence peak. 1st generation larvae infestation in late June chrysanthemum, beginning in late July flowering sunflower infestation, infestation time since late June to late August, when the temperature is high, the larvae develop quickly. The first generation larvae eclosion began in late July 2nd generation spawning form, which has 9.2% of the mature larvae overwinter diapause directly. In early August the first generation began sunflower moth eclosion peak in mid-August to early September for the emergence peak, sunflower moth adults finally see the period of October 5, from the beginning to see the end of the period totaled see 144d. 2nd generation larvae infestation from mid-August onwards late flowering sunflowers, mature in mid-September after having buried the winter, to early October when the harvest is still 30.0% of the larvae mature and not with the harvest sunflower dial to filter out impurities in the winter. These results obtained for the sunflower moth forecast and field control to provide a scientific basis. Study identified the main wintering sunflower moth pattern. Sunflower moth larvae overwinter as mature, there are two main wintering areas: farm soil and filter out impurities. Overwintering larvae are more concentrated in the soil at 0-4cm winter cocoon, with increasing soil depth increases, the cocoon overwintering larvae do less and less. Overwintering larvae buried on soil moisture have certain requirements to 10% of the soil moisture content is most larvae preferences, and preferences in the massive gap between the soil within the cocoon silk to do. Supercooling point of overwintering larvae gradually increased during the winter, but changed slightly, the freezing point during winter rules were not changed, but the overall trend was gradually reduced. During the winter, the larvae continue to reduce weight, the body of the trend of free water content was first decreased and then increased, combined with the water content of the opposite trend. Research has established sunflower moth monitoring and control techniques. Aggregate indicators using six sunflower moth larvae spatial distribution were measured, the results show that it presents aggregated distribution. Sample mean (m) and variance (S2) the relationship between the logarithm of the formula: 1gS2 = lg0.2130 0.5639lgm, sunflower moth larvae show the spatial distribution with the density rises tend evenly distributed. Iwao's m *-m regression equation: m * = 8.1177 0.1447m, shows the distribution of the pest in the field of basic components of individual groups, individuals attracted to each other, the spatial distribution of individual group type is evenly distributed. Analysis of the causes of the aggregation, results of less than 2 λ, suggesting that aggregation sunflower moth larvae was caused due to environmental effects. With Iwao theoretical model to calculate the sampling number of theoretical sampling sunflower moth larvae model number: D = 0.1 when, n = 911.77/m-85.53, D = 0.2 when, n = 227.94/m-21.38. M *-m relationship using sequential sampling model to develop a sunflower field sequential sampling model: T1 (n), T0 (n) = 7.40n ± 4.54 (?), Sunflower field sequential sampling model : T1 (n) = 10.05n ± 2.29 (?). Comparison in the field of sex pheromone, lamps and black light frequency vibration in the adult role of dynamic monitoring results show that the effect of the sex pheromone was significantly better than light and black light frequency vibration, recommendations used in the production of sunflower moth pheromone monitoring adult Dynamic. Bayannaoer region by growing different sowing sunflower showed that: sunflower and sunflower sunflower moth on sunflower moth infestation rates and trends are sowing density heavy, late sowing of light, are May 26 planted a minimum. Sunflower hybrids recommended Bayannur areas concentrated in the May 26 to June 5 between sowing. According sunflower moth and sunflower oil sunflower on different yield loss were fitted population density and yield loss rate of the linear regression equation: y1 = 0.0072x1-0.0133 and y2 = 0.0109x2-0.0395. Combined with local production practice, drawn sunflower and sunflower economic harm permissible levels were 4% and 7%. Prevention of food Kwai calculated indicators 7.40 / plate, sunflower prevention indicators 10.05 / disc. It is worth noting that in recent years more and more fast update rate sunflower varieties, production increased year by year, while the sunflower price fluctuations, therefore, enacted sunflower borer control indicators when applied to flexible.
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