The management of growing wheat in the middle and later stage should do a good job of "one spray and three prevention".

The middle and later period of wheat growth is not only the key period of yield formation, but also the peak period of various diseases and insect pests. It is very important to do a good job of field management in this period to ensure high wheat yield. In recent years, the technology of "one spray and three control" has been widely used in the middle and later stage of wheat management. it refers to spraying insecticides, fungicides, micro-fertilizers, drought-resistant agents and other mixed water spraying. it can simultaneously achieve the purpose of controlling wheat diseases and insect pests, preventing dry and hot wind, preventing lodging and increasing grain weight, and increase production and income.

Wheat in our province will enter the booting and heading stage one after another from south to north, and "one spray and three control" can be carried out, focusing on the control of scab, ear aphid and other diseases and insect pests.

Scab is also known as wheat ear blight. Rotten wheat head, red wheat head, wheat are easy to suffer from seedling stage to heading stage, which mainly cause seedling withering, stem base rot, stem rot and ear rot, of which ear rot is the most serious. In order to control wheat scab, emphasis should be placed on the prevention and control of wheat scab at heading and flowering stage. At the beginning of flowering, carbendazim, thiophanate methyl, prochloraz and other drugs were sprayed, and 500 times of Yongye life element was sprayed at the same time, and the control could be done again every 5-7 days.

Aphids should be controlled when there are 30-60 aphids per square meter at the seedling stage, and when the rate of aphids reaches 15% or an average of 10 aphids per plant at booting stage. Can choose imidacloprid, acetamiprid, carbosulfan and other medicine spray, while spraying Yongye life element 500 times solution.

The time of "one spray and three defenses":

Wheat booting and heading stage: from mid-late April to early May, when the temperature is high and humidity is high, it is a period of high incidence of diseases and insect pests, so we should focus on prevention and control.

Wheat filling period: mid-late May, which is the key period for yield formation. Spraying foliar fertilizer combined with pest control can prevent dry and hot wind and increase grain weight.

When adopting the technology of "one spray and three prevention", we should pay attention to the following points:

1. The use of highly toxic and high residual pesticides is strictly prohibited.

two。 According to the occurrence characteristics and trends of diseases and insect pests, suitable pesticides, scientific formula and uniform spray were selected.

3. Spraying during the flowering stage of wheat should avoid the period of flowering and pollination.

4. Strictly abide by the safe operation rules for the use of pesticides, do a good job of protection, prevent personnel from poisoning, and do a good job in the cleaning of pesticide application equipment.

The usage of Yongye life element on wheat:

Seed dressing method: mix seeds with Yongye life element 70-100 ml plus 1.5 kg of water and 30 kg, then pile up for 2 hours, spread out to dry and sow seeds. Seed dressing with Yongye vital element can improve the germination rate of wheat, ensure uniform germination and strong bud, and improve the disease resistance of seeds.

Foliar spraying period and application effect: spraying 500-fold solution of Yongye life element at jointing stage of wheat can prevent lodging and promote plant growth. Spraying 500-fold solution of Yongye life element at booting stage could promote wheat heading neatly, enhance plant disease resistance and lodging resistance, make wheat plant grow healthily and increase spike length. Spraying 500-fold solution of Yongye life element at the initial stage of grain filling could enhance plant resistance to lodging and dry and hot wind, promote wheat grain fullness and increase 1000-grain weight.