According to the No. 322 announcement of the Ministry of Agriculture, from January 1, 2007, all kinds of high-toxic organophosphorus pesticides containing methamidophos, parathion, methyl parathion, monocrotophos and phosphonium are prohibited. The formulations are marketed and used on crops. After the Ministry of Agriculture organized relevant experts for many years of painstaking experiments, and recommended 10 new pesticides such as fipronil as the first batch of five high-toxic pesticides such as methamidophos, among which three kinds of wheat pests were controlled, and vegetable pests were controlled. 7 kinds. The technology used is now described as follows:
First, wheat pest control wheat aphids, the available varieties are:
1, acetamiprid (trade name is Mobilang). It is recommended to use a dose of 3% acetamiprid EC 20-30 ml / a 60 kg spray with water. The technical points of use are: spray application at the beginning of the occurrence of aphids at the wheat ear stage.
2, anti-Converse. It is recommended to use a dose of 50% anti-Converse WP 10-15 g/mu and a water spray of 60 kg. The technical points of use are: spraying at the beginning of wheat seedlings or spikes.
3, cyhalothrin (Kung Fu). It is recommended to use a dose of 2.5% cyhalothrin emulsifiable concentrate 20-25 ml / acre, and spray 60 kg with water. The technical points of use are: spray application at the beginning of the aphid stage in wheat seedling stage, and it is not appropriate to control aphids at the wheat ear stage.
Second, vegetable pests 1, control of vegetable aphids, the varieties that can be used are:
(1) Imidacloprid (big hero, clean, once again). It is recommended to use a 10% wettable powder of 10-20 g/mu and a spray of 50 kg of water. The technical point of use is: spray application at the beginning of the locust.
(2) acetamiprid. It is recommended to use a dose of 3% acetamiprid EC 15-20 ml / acre, 50 kg spray with water. The technical point of use is: spray application at the beginning of the locust.
2, prevention and control of vegetable whitefly, the varieties that can be used are:
(1) Imidacloprid. It is recommended to use a dose of 10% wettable powder of 20 g/mu and spray with 50 kg of water. The technical point of use is: spray application at the beginning of the season of tobacco powder.
(2) Bifenthrin (Uranus). It is recommended to use a dose of 2.5% bifenthrin EC 30 ml/mu and spray with 50 kg of water. The technical point of use is: spray application at the beginning of the season of tobacco powder.
3. For the control of beet armyworm, the varieties that can be used are:
(1) chlorfenapyr (exhausted). It is recommended to use a dose of 10% chlorfenapyr suspension 50 ml / acre, 50 kg spray with water. The technical point of use is: spray application before the second instar of beet armyworm.
(2) Furanyl hydrazide (Fu Xian). It is recommended to use a dose of 10% furanyl hydrazide suspension 60 ml / acre, 50 kg spray with water. The technical point of use is: spray application before the second instar of beet armyworm.
4. For the control of Plutella xylostella, the varieties that can be used are:
(1) Emamectin. It is recommended to use a dose of 1% emamectin EC 15-25 ml / a, 50 kg spray with water. The technical points of use are: spray application at the peak of hatching of Plutella xylostella to 2 years before larvae.
(2) Fipronil (Ruijinte). It is recommended to use a dose of 5% fipronil suspension 20-40 ml / a 50 kg spray with water. The technical points of use are: spray application at the peak of hatching of Plutella xylostella to 2 years before larvae.
(3) chlorfenapyr. It is recommended to use a dose of 10% chlorfenapyr suspension 35-50 ml / acre, 50 kg spray with water. The technical points of use are: spray application at the peak of hatching of Plutella xylostella or before the larvae 2 years old.
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