The first water in spring wheat field has a great impact on the yield, watering too early, resulting in soil compaction, affecting the increase in ground temperature; late soil drought, affecting the spike differentiation of wheat, yield is difficult to increase. When does the wheat field pour the first water in early spring?
Look at the sensation: grab the hoe and sow without freezing water, poor quality of the preparation, loss of field weight and poor wheat development. After pouring, pay attention to planing, in order to improve the temperature and protect the oysters, increase the spring delivery, promote the formation of spikes. Whereever the autumn crops are cultivated, frozen winter water is poured, and wheat fields with more rain and snow fall and fall are generally not poured back into Qingshui. Especially in high-yielding fields, the density is relatively large and should be postponed to the jointing stage and combined with fertilizing to infuse the spring and water; if the wheat field is in good condition, it can be postponed to the jointing stage and then poured; the lack of sensation can be in the period of getting up.
To see the seedlings: Before winter, the total number of stems per mu is less than 500,000, and the lack of lye should be poured back to Qingshui, and urea urea should be 7.5 to 10 kilograms; the population is moderate, the sensation is not enough, or the springs that are weak before winter can turn weak and can pour water; The fattening stage can increase the spike rate and increase the number of mu spikes. It is suitable for wheat fields with insufficient population, severe drought, and weakened spring before winter; late seeding wheat field and seedlings with a total stem number of 700,000 to 900,000 or 90 More than 10,000 lean seedlings, adequate fertilizer and water, mainly for ploughing and heat preservation, the first water in early spring can be postponed until the period of jointing to jointing; wheat has more tillers, and the higher density is postponed to the jointing stage and combined with fertilization. Spring water. Watering in advance can cause late lodging.
Look at the weather: If you need to return to Qingshui, wait for 5 cm to stabilize the temperature at 5 °C. Watering is too early and the water is held in the unperverted layer of permafrost, which will thicken the permafrost layer and affect the respiration and greening of the root system. In general, as long as the lyrics permit, the wheat field should delay or not return to Qingshui and postpone until the jointing period. In early spring, there is a large temperature difference between day and night, and the cold and warm air flow alternates frequently, and small water is appropriate. After pouring, plan the protection in time.
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