烤烟育苗大棚不同部位及接蚜量对烟蚜和烟蚜茧蜂繁育的影响

Effects of Different Positions in Greenhouse and Number of Inoculating Aphids on Breeding of Aphids and Aphidius gifuensis

为探明烟蚜和烟蚜茧蜂在烤烟育苗大棚不同部位及接蚜量下的繁育规律,以‘云烟87’为材料,于2015年在贵州省开阳县楠木渡镇新凤村烤烟育苗基地(107°01′33.2″E,27°17′16.6″N)进行试验,探讨烤烟育苗大棚不同部位(前部和后部)及接蚜量(20、40、60头/株)对烟蚜和烟蚜茧蜂繁育的影响。结果表明:烤烟育苗大棚前部积温、日均温及日均最高温均高于后部,日均湿度略低于后部;大棚后部烟蚜和烟蚜茧蜂繁育量多于前部,接蚜量为40头/株的烟株,烟蚜和烟蚜茧蜂繁育量最多,其次是20头/株的烟株,60头/株的烟株烟蚜及烟蚜茧蜂繁殖量最少;大棚后部烟株各农艺性状指标优于前部,接蚜量越多,烟株各农艺性状指标表现越差。综上,烤烟育苗大棚后部利于烟蚜和烟蚜茧蜂繁殖量的增加,烟株生长发育较好,且初始接蚜量以40头/株为宜,20头/株或60头/株对烟蚜和烟蚜茧蜂繁殖不利。

The study aims to verify the breeding rules of aphids and Aphidius gifuensis under different positionsin greenhouse and number of inoculating aphids.‘Yunyan 87＇was used as the main test material, theexperiment of different positions in greenhouse and number of inoculating aphids on breeding of aphids and Aphidius gifuensis was conducted at flue-cured seedling house in Xinfeng（107°01′33.2″E, 27°17′16.6″N）,Nanmudu Town, Kaiyang County, Guizhou Province in 2015, to explore the effects of different positions（forepart and rear） in greenhouse and number of inoculating aphids（20, 40, 60 piece/plant） on breeding ofaphids and Aphidius gifuensis. The results showed that accumulated temperature, mean daily temperature,mean daily highest temperature of the forepart（3-4 row） were higher than that at the rear（9-10 row） of thegreenhouse, but mean daily humidity of the forepart was lower than that at the rear. The number of aphids and Aphidius gifuensis breeding at the rear was more than that of the forepart, and 40 piece/plant was the maximum,followed by 20 piece/plant, 60 piece/plant was the minimum. The agronomic characters of tobacco plant at therear were better than that of the forepart in greenhouse, and became worse with the increase of the number ofinoculating aphids. The rear of the greenhouse is conducive to the production increase of aphids and Aphidius gifuensis, and also to the growth and development of tobacco, and the number of inoculating aphids with 40piece/plant is advisable, 20 and 60 piece/plant are adverse to the breeding of aphids and Aphidius gifuensis.