论文部分内容阅读
桃小食心虫在每年的水果生产中,虫果率高,危害大,难防治,直接影响果园经济效益的提高。对桃小食心虫的防治,做到定点观察,准早治小,能有效地控制虫果率,使当年的虫果率可由60%降至1%左右,具体的测报和化学防治措施是: 一、准确测报 先进行越冬场所虫卵的调查,在果园中选三棵果树,分别在树冠下,果行间、堆果场、按深度分层取土筛茧(地表1寸、2寸、3寸)。地表1寸到2寸的虫茧最多。其次是
Peach Mungbean insects in the annual fruit production, fruit rate is high, harmful, difficult to control, directly affect the orchard economic benefits. The prevention and treatment of Peach Mungbean insects, to do fixed-point observation, early treatment of small, can effectively control the rate of insect fruit, so that the rate of insect fruit can be reduced from 60% to 1%, the specific measure and chemical control measures are: a , Accurately report the first survey of oviposition overwintering sites, in the orchard in the election of three fruit trees, respectively, under the canopy, fruit row, pile fruit field, according to the depth of layered sieve sieve (surface 1 inch, 2 inch, 3 inch ). Surface 1 inch to 2 inch worm cocoon up. Followed by