It is now the season for planting winter wheat in the north. Agricultural experts said that it is recommended that the sown areas pay close attention to changes in moisture conditions and the emergence of wheat. If there is a lack of moisture in the soil and the emergence of wheat seedlings is difficult, you can irrigate "head covering water" to ensure the normal emergence of wheat.

So, what is "head covering water"? When is the wheat "covered"? Is it watered before planting? Or should it be poured after sowing?

Wheat "masking water" refers to the general term for irrigation in the field before germination after the wheat is sowed. There are two situations in which "head covering water" is poured after wheat sowing: one is passive "head covering water" and the other is active "head covering water".

Because of loosing soil sowing and forced to water the seedlings after sowing, it is called passive "head covering water". In this case, because watering will cause the ground temperature to drop, soil compaction, and poor ventilation, compared with foot-moisture sowing, wheat seedlings tend to grow weaker and have fewer tillers, which is not conducive to cultivating strong seedlings before winter, so that ideal strong seedlings cannot be formed Seedlings affect the future growth and development of wheat, resulting in reduced yield. Therefore, try to avoid pouring head water. The undesirable effects of this “head masking water” vary with the texture of the soil, and the clay is more serious. But as a remedy, it is better than no water.

Because the stubble is too tight and there is no time to moisturize, the planting is used first and then watered, so that targeted watering and timely cultivation to break the compaction is called active "headwatering". Although this situation still has unfavorable factors such as ground temperature drop and soil compaction, it can be compensated by correct planting methods and management measures. The main technical measures are: the quality of land preparation should be good, and the land should be leveled; the seeding should be shallow, with a depth of 3 to 4 cm, and the seeding rate should be increased accordingly; immediately after the sowing, watering with the seeding; watering should be thoroughly watered ; When suitable for cultivating, cultivating shall be timely to eliminate compaction.

You should pour your head cover according to the emergence rate and moisture content.

If the emergence rate of wheat has reached about 90% after sowing, there is no problem with watering at this time, but if the emergence rate of wheat is about 50% or less, it depends on the moisture content.

The emergence rate of wheat after sowing is extremely low, so you must not blindly water it immediately. It is necessary to observe and analyze which link the problem lies in, such as drought, pests, or seeds, and then take corresponding measures.

Pay attention to the following matters when pouring wheat "head water":

1. Try to water before planting. Feeling that the soil is too dry and the moisture content is not enough, which will affect the emergence of wheat seedlings. Then water the wheat once before preparing the soil. You don't need to water too much. Just make up the soil moisture. Then there will be no problems with soil preparation and planting. .
2. Avoid flooding watering. If you have to water the wheat after sowing, you must not flood the water, especially if the wheat has not emerged, otherwise it will definitely lead to rotten seeds and affect the emergence of wheat. It is advisable that there is no accumulation of water in the field.

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