农业措施对梨小食心虫发生规律的影响

Effect of Agricultural Measures on Occurrence of Grapholitha molesta

以梨小食心虫诱芯为试材,采用5点取样法统计梨小食心虫发生数量,研究了春耕、间作花生、地势、树势等因素对梨小食心虫发生规律的影响。结果表明:春耕可以减少梨小食心虫数量,间作花生对于梨小食心虫的数量无显著影响,地势对梨小食心虫的影响是山顶数量多于山腰,树势对梨小食心虫影响较大,树势越好梨小数量越多。这些结果可为梨园中科学合理使用农业措施防治害虫提供参考。

Taking Grapholitha molesta lure as material, with five point sampling method, the quantity of Grapholitha molesta statistic was conducted. The effect of spring ploughing, intercropping, terrain and the tree vigor on the occurrence dynamics of G. molesta were studied. The results showed that the spring ploughing was an important effect to control G. molesta. Intercropping peanuts did not have significant effect on the occurring number, but it had effect on the occurrence dynamics. Terrain affected the number of the G. molesta, but the hilltop was more effective than the hillside in orchards. The tree vigor was also important for the occurrence of G. molesta. In the experiment, the stronger pears trees were the less quantity of Grapholitha molesta. These results could guide the rational use of the agricultural measures in pear orchard.