What medicine can wheat use to achieve high yield and harvest?

First: prevention and control period, turning green to set aside the festival period.

It means that winter wheat begins to turn green and resume growth after spring, indicating that wheat has entered the turning green period (Tomb-Sweeping Day). With the increase of atmospheric temperature, the growth rate of wheat is accelerated, and the internodes of stems are gradually elongated from bottom to top and grow upward, which is called jointing stage. At this time, you can feel the obvious protruding nodes by touching the straw near the ground with your hands. At the same time of the upward growth of wheat, the ears of wheat began to form gradually, that is to say, wheat mainly changed from nutrition to growth, and at the same time turned to vegetative growth and reproductive growth, which is also the initial stage when overwintering pests and diseases began to enter the harm. Therefore, in management, it is necessary not only to chase chemical fertilizers, but also to prevent overwintering pests. We call this management stage the first critical period.

Greening jointing stage: This period mainly controls take-all disease, sheath blight, root rot, stem rot and overwintering pests, such as aphids, red spiders and mites, and improves the cold resistance of wheat.

The preparation method is as follows: 1% brassinolide 15 ~ 20g +98% dipotassium phosphate 50g ~ 80g +25% pyraclostrobin emulsifiable concentrate 25~30ml+ avermectin high chlorine fluoride solution10 ~/5ml, mixed with 30kg of water, and sprayed on it.

Second, the control period, heading and flowering.

Heading and flowering are simultaneous vegetative growth and reproductive growth of wheat, which means that wheat begins to turn to reproductive growth. In this management stage, wheat pays attention to management, which determines the number of ears per mu, high field density, poor ventilation and light transmission, high temperature and rainy weather. Frequent rainfall will cause or cause wheat diseases and insect pests. If it is not prevented in time, it will be difficult to prevent it again, and the harm is the most serious time. Once the pests and diseases are not properly controlled, many wheat tillers can't head and die gradually. The number of spikes per mu decreases and the yield decreases, which is called the second critical period of this wheat management stage.

Third: prevention and control period, wheat filling period.

Wheat grain filling is the most critical period of wheat grain formation and the last period of wheat yield formation. If the management is not in place, it will have an important impact on the high yield of wheat. Wheat needs a lot of nutrients to form grains when it enters the filling stage. At the same time, the ability of wheat roots to collect water and nutrients is gradually aging and decreasing. At this time, if the management can't keep up, it will seriously affect the 1000-grain weight of wheat and lead to a reduction in production. Wheat is the most critical period of management at present.

1. Defend against dry and hot wind, bacterial wilt, rust and ear aphid.

2. Ensure that the wheat is harvested within 15 days after peanut planting.

3. Planting corn, cotton and soybean in wheat intercropping ten days before the wheat harvest, and planting soybean after the wheat harvest.

4. Sowing spring valley, mung bean and sesame is the best time.

At the end of May, pay attention to the prevention and control of tobacco thrips, spring corn borers and stem borers. Attention should be paid to prevent thrips and planthoppers from harming maize rough dwarf disease in spring. The main stem of cotton has 3~4 leaves, and it is injected to control aphids.

6. Plant summer onions, summer cucumbers and autumn celery.

In the best period of wheat harvest, the growth process of wheat from sowing to maturity can be divided into emergence, three leaves, tillering, wintering, turning green, getting up, jointing, booting, flowering and filling maturity, and the filling period can be divided into grain formation, milk maturity, wax maturity and complete maturity. Milk maturity, wax maturity and complete maturity are divided into 12 growth stages.