枣园桃小食心虫诱捕量与温、湿度的关系

为掌握枣园桃小食心虫的发生规律及种群数量动态,以确定防治最佳时期。采用性诱剂诱测法研究发生期温、湿度与枣园桃小食心虫种群数量的关系。结果表明,桃小食心虫在晋中地区枣园一年发生2代,且越冬代羽化不整齐。将桃小食心虫种群数量分别与温度和湿度进行最优曲线回归模型拟合发现,其种群数量与温度呈等比级数和指数相关,达显著水平,模型分别为Y=e(-0.341+0.229×t)和Y=0.711×e0.229×t;与湿度的最优曲线拟合为S形曲线(Y=e(7.942-112.547/t))和对数曲线(Y=-1.806+545.101×lnt),达极显著水平。夜间温、湿度越高,成虫的发生量越大,诱捕效率越高。

The Relationship between Trapping Number of Carposina sasakii Matsmura with Temperature and Humidity in Jujube Orchards

To investigate the occurrence and the population dynamics of Carposina sasakii Matsmura and determine the best control period, the relationship between temperature, humidity and the population number of Carposina sasakii was studied using sex pheromone. The results showed that Carposina sasakii occurred two generations in jujube orchards in Jinzhong city, and overwinter generation emergence period ranged from the middle ten days of May to the last ten days of June. Using the number of Carposina sasakii to curve optimal fitting regression models with temperature and humidity, it was observed that the quantity and temperature were related with the population of Carposina sasakii in geometrically and index-related and the relationship was significant. The models were Y=e（-0.341＋0.229×t）and Y=0.711×e0.229×tas respected. The optimal curve with humidity was estimated at s-shaped curve Y=e（7.942-112.547/t）, and logarithmic curve Y=-1.806＋545.101×lnt, reached a significant level. The higher of night temperature and humidity, the greater the amount of the adult occurs, and the higher trapping efficiency.