The wheat is about to enter the green period. Many farmers’ friends are preparing to pour back to Qingshui, and some farmers are grabbing water from the ditches. The author gives everyone a reminder: Wheat turns green, and fertilizer should be used with caution.
The main factor that affects the growth of wheat in the return period is not water but temperature. Although the temperature gradually increases after spring, the nighttime temperature is still low, and the temperature suitable for wheat growth has not yet reached. As long as there is ample lyrics, raising the ground temperature in the cultivating loose soil is the focus of field management in wheat returning to the green period. The temperature of the ground is closely related to the soil moisture content. The spring weather in our province is characterized by windy and rainy weather. The spring and early winter is frequent. Early spring watering can easily lead to large cooling in the field, which is unfavorable to the growth of wheat after returning green, and the heavy air is also caused by cold air. The advent of freezing injury, so do not blindly poured back to Qingshui. The return of green manure should be scientifically mastered. Fertilizer can also cause too many infertile labors in spring, large groups, one cause nutrient waste, and the second place hidden dangers for later lodging and pest damage.
First, the time for pouring back to Qingshui should be determined according to the soil moisture conditions. Before winter, pluck seedlings and not irrigate frozen water. The poor quality of field preparation, serious field deficiencies in wheat fields, and poor wheat individual development, small groups of serious drought conditions should be Timely pouring of green water and pouring back to Qingshui can only be performed when the average daily temperature reaches 3°C or more. Generally, as long as the lyrics permit, the wheat field should delay or not return to Qingshui, delaying the arrival of spring and water until the time of getting up or jointing. For groups of small gaps or poor winter wheat growing before the long wheat growing season, can be combined with 10 acres of urea watering topdressing, watering wheat field after the appropriate time to plan the protection of locusts.
Second, pouring back to Qingshui to strictly control the amount of water due to changes in temperature in early spring day and night plus frequent cold and warm air flow alternately, the amount of water to pour water is appropriate, flood irrigation should not be flooded, to prevent the occurrence of cold currents and ground temperature is too low to wheat Causes freezing injury.
Three, pouring back to Qingshui but also according to the seedlings of the wheat field sown before the winter, due to lack of fertility caused by fewer tillers, panicle number is not enough (before the winter, the total number of stems per mu is about 500,000) can be poured back to the Qingshui, and combined with pouring Water per acre Topdressing urea 7.5-10 kg Add 5-7.5 kg of potassium sulphate or potassium chloride to promote early spring tiller production, try to get more panicles as much as possible, lay a good foundation for high yield; late sowing wheat and total stem number 70-90 thousand strong seedlings or more than 900,000 bitumenous seedlings with sufficient water are generally not poured back to Qingshui, mainly for cultivating loose soil and keeping larvae warm, and the spring raw tillers are pressed to the minimum; Before the large amount of growth and consumption of fertilizer and water, but before winter and not poured frozen water, poor field moisture, early spring encounter cold and easy to lead to dead seedlings, but also should pay attention to timely pouring back to Qingshui.
In short, pouring green water should be due to land, due to Miao system should not avoid blindness, so as to avoid unnecessary losses.
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