本文選題：桃園 + 梨小食心蟲　； 參考：《植物保護(hù)》2016年01期

【摘要】：2011-2013年對昆明桃園梨小食心蟲發(fā)生規(guī)律及為害特點(diǎn)進(jìn)行了系統(tǒng)調(diào)查研究。結(jié)果表明:3年來昆明地區(qū)梨小食心蟲發(fā)生趨勢基本一致,但各年度發(fā)生的大高峰期有差異,2012年成蟲發(fā)生大高峰期為越冬代、第一代;2013年成蟲發(fā)生大高峰期在第二、三代,這與當(dāng)時(shí)的溫度、降水量有很大關(guān)系。昆明梨小食心蟲一年發(fā)生4代,越冬代成蟲發(fā)生高峰期在3月中旬至4月上旬,第一代發(fā)生高峰期在5月上旬至6月中旬,越冬代、第一代主要為害桃樹新梢,新植桃園幼蟲更趨向在低齡桃樹為害,幼蟲蛀梢的高峰期在成蟲羽化高峰期后15~30d;第二、三代發(fā)生高峰期在7月上旬至9月下旬,世代重疊明顯,后兩代主要為害果實(shí)。經(jīng)飼養(yǎng)觀察,桃園梨小食心蟲性比[♀/(♀+♂)]為0.57~0.64,幼蟲被天敵寄生率為26.9%,幼蟲蛀果率為1.25%~5%。
[Abstract]:A systematic investigation was conducted on the occurrence regularity and damage characteristics of Pear fruit-eating insects in Taoyuan, Kunming, from 2011 to 2013. The results showed that the trend of occurrence of Pear fruit-eating insects was basically the same in Kunming during the past three years, but there were differences in the major peaks of occurrence in each year. The major peak period of adult occurrence in 2012 was overwintering generation, the first generation, and the adult occurrence peak in the second and third generations in 2013. This has a lot to do with the temperature and precipitation at that time. There were 4 generations per year of small heart-eating insects in Kunming pear, the peak of adult insects in overwintering generation was from mid-March to early April, and the first generation occurred from early May to mid-June. The first generation was mainly harmful to the new shoots of peach trees. The larva of newly planted peach orchard tended to be damaged by young peach trees, the peak period of larval shoot borer was 15 ~ 30 days after the peak of adult emergence, and the second, the third generation occurred from early July to late September, the generation overlap was obvious, and the last two generations were main fruit damage. The results of feeding and observation showed that the sex ratio of Peach orchard pear was 0.57 ~ 0.64, the parasitic rate of larva by natural enemy was 26.9m, and the rate of fruit borer was 1.25%.
【作者單位】： 云南省農(nóng)業(yè)科學(xué)院農(nóng)業(yè)環(huán)境資源研究所;云南省農(nóng)業(yè)科學(xué)院;
【基金】：國家水體污染控制與治理科技重大專項(xiàng)(2012ZX07102-003)
【分類號】：S433

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