At the ear of corn, pests usually cause damage to the fringe of corn, and the young seeds at the top of the plant, the stems and cobs of the drill collars, etc., have a serious impact on the yield and quality of the corn. The pests that often appear in the ear of corn include corn borer, three-generation armyworm, and cotton bollworm and other ear pests and aphids. According to the investigation of the corn field in the plant protection station and the town survey report, combined with the historical data and weather forecast, the following trend forecast was made:
   First, corn ear worms: probably include corn mash, third-generation armyworm, and cotton bollworm. It is predicted that corn ear worms are moderately produced, and local occurrence is biased, with an area of ​​about 620,000 mu. The control index is 40 to 50 heads of insects in Baisui , and the control period is selected from the end of August to the beginning of September each year .
   Control method:
   1. Cut the silk method. After the corn is pollinated, the top of the ear is cut 1 to 2 cm and the filament is cut together, and the cut filaments and larvae are taken out of the corn field for treatment.
   2 , chemical control. Apply 5.4 times of beta-cypermethrin EC 1500 times, or 2.5% of fluridazine (Ipo) emulsifiable concentrate 1000 times, or 24% of Wanlings Diluting 1000-1500 times of liquid after pollination of corn, dripping the top of the filament.
   Second, corn borers: The forecast is small, with an area of ​​about 150,000 mu. The control index is about 100 heads per plant .
   Control method:
   In the late corn growth, the average per acre using cypermethrin EC 4.5% of Acetamiprid 1500 times, or five percent of the amidine 2000 times, the use of smoke machines spraying cure.
Â
Â
Â
Â
Kitchen Sink Faucets,Touch Kitchen Faucet,Retractable Kitchen Faucet,Black Steel Hose Faucet
Yuyao Zelin Sanitary Ware Co., Ltd , https://www.yyzelinfaucet.com