花生田金龟防治技术研究

1974-1993年在花生田金龟发生期．采用喷药液(粉）、环剥寄主树干涂药、毒土、毒饵、毒桂、种植蓖麻诱杀、人工捕杀、内吸药剂盖种及主根处土壤施药等方法．均可使蛴螬减退率最低达70％．一般为80-90％．最高达100％；增产最低为15.15%，一般为70-80%，最高达200％，效果极为明显。同时阐明了各供试方法的应用前景及其不足之处。这些方法可供生产上因虫、因时、因地、因条件选用，其中以用内吸药剂盖种及药施主根土壤等均为一次性防治。方法简单．省工、省药．污染轻，利于保护天敌生物．是目前防治蛴螬最佳方法。

STUDIES ON THE CONTROL TECHNIQUES OF CHAFERS IN PEANUT FIELDS

A series of methods. including inseeticidal dusting. spraying. baiting. applying to alternative host trees after ring barking and planting castors. manualcatching. covering seeds with systemic pesticides or applying them around the taproots. etc. were studied for the control of chafers in peanut fields in Shandong Province during 1974- 1993.Great effects were obtained from these treatments. The number of chafer in the treatment plots generallydecreased by 80- 90%,ranging from 70- 100%,The yields of peanut from the treatmentsincreased by 70- 80%,with a range of 15.15- 200%,The prospects and defects of thesecontrol methods were discussed.Those of covering seeds with systemic pesticides andapplying them around the taproots. which can reduce the frequency of pesticidalapplications. save labour. conserve natural enemies and decrease pollut ion. are cons id ered as2of the best ways to control white grubs inpeanut fields at present.