It is the experience of the peasants to "see" the topdressing and watering. The so-called "three look" refers to watching the sky, seeing the soil, and watching the seedlings. Look at the sky, it is to see if the weather is raining, to what kind of solar terms; to see the soil, is to see how the soil is lyrical; see the seedlings, it is to see how the wheat seedlings and individuals grow, lack of fertilizer, no shortage of fertilizer, lack of water, no shortage of water . The core of Tian, ​​Tu and Miao is the seedlings, so it is the most important thing to look at the diagnosis of seedlings, the management of seedlings, and the management of seedlings.
Nowadays, the temperature will rise and wheat will enter a stage of rapid growth and development. The key period of wheat returning to green and topdressing will also come. Most farmers arbitrarily increase the amount of reclaimed green fertilizer when topdressing, causing wheat to fall and reduce production. In this regard, the author suggests that farmers' friends should apply “three look†to the wheat to return to the green fertilizer to ensure a bumper harvest of wheat this year.
First, look at the seedlings and fertilize
In the process of topdressing, it should be classified according to different seedlings. In general, late seedlings and weak seedlings should be re-fertilized to increase the rate of tillering and panicle formation; strong seedlings should be less or not. At the same time, for the winter, there is no strong seedlings or few single plants, and the wheat fields with a total stem number of less than 400,000 per mu should be applied early and reapplied. Generally, 20 kg of tri-element sulfur-based compound fertilizer is applied per mu.
For the wintering period, the individual develops well, and the moderately strong seedlings are less or not applied. The main control is to control the jointing fertilizer to reduce the breeding of ineffective tillers in spring, prevent ridges from closing, and is conducive to ventilation and light transmission. For the Wang Chang Miao, which is too large in the group, in addition to controlling the fertilizer and water during the regreening period, measures such as deep tillage and chemical regulation should be taken to control the growth of wheat roots, stems and leaves.
The second is to see the soil fertilization
Because the sand seedlings do not produce old seedlings, the fertilizer and water retention are poor, and appropriate fertilization should be applied. If the fertilization is insufficient, it will have a certain impact on the number of spikes and the number of grains and the growth in the later stage. Due to the poor performance of the previous fertilizer, the clay should be applied less during the regreening period, and the roots should be fertilized at the booting stage. Pay attention not to excessive fertilization to prevent greed and lodging.
The third is to look at the fertilizer
If it is raining during the greening period, use chemical fertilizer spreader to apply chemical fertilizer. It is strictly forbidden to apply fertilizer to avoid burning seedlings, burning leaves and affecting wheat growth. Fertilizer application can not only be well absorbed by wheat, but also causes the volatilization and loss of fertilizer, resulting in waste. In the drought, fertilize water in time to increase the utilization rate of fertilizer. (Li Jinfu)
Wheat should be carefully poured into the green water
The main limiting factor affecting wheat growth during the regreening period is not the water but the temperature. Although the temperature gradually rises after entering the spring, the temperature at night is still low, and the temperature suitable for wheat growth has not yet been reached. As long as the sensation is sufficient, the increase of ground temperature by cultivating the loose soil is the focus of wheat field management.
The temperature of the ground is closely related to the soil water content. In spring, the climate characteristics of our province are windy and rainy, and the spring is cold. The early spring watering is easy to cause the field to cool down. It is very unfavorable for the growth of wheat after greening. The air is coming to cause freezing damage, so don't blindly pour back the green water.
The specific pouring should not be poured back to Qingshui according to the condition of the seedlings. For wheat fields that are planted in a timely manner before winter, due to insufficient soil fertility, there are few tillers, and the number of panicles is insufficient (about 500,000 per acre total stems before winter) can be poured back to Qingshui, and combined with watering, 7.5-10 kg of urea per mu. Add 5 to 7.5 kg of potassium sulphate or potassium chloride to promote the early spring tiller production, try to get more spikes as much as possible, and lay a good foundation for high yield.
Late sowing wheat and the total stem number of 700,000 ~ 900,000 strong seedlings or more than 900,000 more than the seedlings and fertilizers are generally not poured back to Qingshui, with cultivating loose soil, keeping warm and warming, and freezing Chunsheng tiller to a minimum; Before the winter, the wheat growing in the wheat field consumes a lot of fertilizer and water before winter, but it is not watered before winter. The field is very bad. In the early spring, it is easy to cause cold seedlings in cold spring. It should also pay attention to timely returning to Qingshui.
The time to pour back the green water should be based on the soil moisture. Any wheat field that has been sown before winter and has not been irrigated with frozen water, poor quality of land preparation, and severe field loss, and poorly developed wheat in the field and severely droughted in the group should be poured back into Qingshui in time. The time for pouring back into Qingshui is The average temperature is above 3 °C. In general wheat fields, as long as the lyrics allow, you can not pour back to Qing Shui, or postpone it to get up or jointing.
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