What herbicides can be used after wheat jointing stage and what fertilizers can be used at wheat jointing stage?

After the jointing stage of wheat, 70-80ml of 28.8% 2- ethylhexyl chlorofluoropyr

What herbicides can be used after wheat jointing stage and what fertilizers can be used at wheat jointing stage?

After the jointing stage of wheat, 70-80ml of 28.8% 2- ethylhexyl chlorofluoropyracetate EC was sprayed evenly with 30kg of water. After spraying, broad-leaved weeds such as Euphorbia helioscopia and pig gizzards could be controlled. Wheat from jointing stage to booting stage is a period of simultaneous development of reproductive growth and vegetative growth, and it is also a fragile and sensitive period in its life. At this time, wheat plants are weak in waterlogging resistance, cold resistance, drought resistance and saline-alkali resistance, and it is easy to cause phytotoxicity after application. It is suggested to weed artificially as much as possible.

1. What herbicide can be used after wheat jointing?

1, weeding

(1) mu is sprayed with 70-80ml of 28.8% 2- ethylhexyl clopyralid EC and 30kg of water. After spraying, it can control broad-leaved weeds, such as Euphorbia helioscopia and pig gizzards.

(2) Artificial weeding should be carried out after jointing stage, because jointing stage to booting stage is the same development period of wheat reproductive growth and vegetative growth, and it is also a fragile and sensitive period of wheat life. At this time, their waterlogging resistance, cold resistance, drought resistance and saline-alkali resistance are greatly reduced, and it is easy to cause phytotoxicity after application.

(3) Improper use of drugs will inhibit the growth of wheat, cause tiller death, cause abnormal ears of wheat, or cause plants not heading and not bearing fruit, which will eventually lead to lower yield.

2. Insect control

(1) The spraying time is the jointing stage of turning green.

(2) To control wheat spiders, spraying 3000 times 1% avermectin or 3000 times 15% pyridaben EC.

(3) To control sheath blight, 75-1 00kg of water per mu is mixed with 5% jinggangmycin150-200ml, and then sprayed on the base of wheat straw, and sprayed every 10- 15 days.

(4) To control underground pests, 40-50ml of 48% Lethbone EC (or 50% Phoxim EC) is mixed with 75-100kg of water per mu, and then sprayed on the base of wheat straw.

Second, what fertilizer is used at the jointing stage of wheat?

1, suitable soil moisture

(1) is suitable for soil moisture, sufficient population, high soil fertility level, solid sowing foundation, overwintering water before winter and strong individuals (i.e.? How is Megan? ), urea 10- 15 kg can be applied in the middle and late jointing stage.

(2) After fertilization, it can prevent wheat plants from consuming too much nutrients due to tillering, avoid the dullness of the field caused by large population, and aggravate pests and diseases. At the same time, it can also promote the root system of wheat, enhance the ability of drought resistance and lodging resistance, and delay the late premature aging.

2. Low moisture content

(1) For thin sandy land with late sowing, poor soil moisture, no overwintering water, insufficient population, few tillers per plant, and average or poor soil fertility, 8- 10 kg of urea can be applied with water, and 5-7 kg of urea can be applied per mu at the end of jointing.

(2) Fertilization can promote tillering in spring, transform seedling situation and improve tillering rate.