After pouring the grout water, the wheat is dead? Remember: don't pour water!
Recently, all parts of the country have gradually entered the high temperature mode, and many meteorological stations have issued dry hot air warnings! At present, winter wheat in North China and Huanghuai is at a critical stage in the production of flowering pollination and grouting.
From May 13th to 14th, the highest temperature in Hebei, Henan and other regions will reach 32°C-36°C. In the central and southern Hebei, central and northern Henan, and parts of northern Shandong, there will be 1-2 days of dry and hot weather, with moderate to severe dryness. The risk of hot wind is extremely unfavorable for the harvesting of winter wheat to be harvested!
In the face of high temperature and drought, some farmers watered wheat to maintain proper soil moisture, increase air humidity, delay root premature aging, enhance leaf photosynthesis, and prevent or reduce the effects of dry hot wind.
However, some farmers, after pouring the grout water, found that their own wheat has dried up. Why?
It turns out that the wheat filling period is the most vigorous period of wheat life, and the demand for water and fertilizer is the largest.
When flooding or watering is large, the soil water is saturated for a long time, the air in the soil is lacking, the root respiration is inhibited, and the water nutrient absorption is temporarily impeded, resulting in a slow supply of short-term water and nutrients.
If the water is watered under high temperature exposure, under the strong transpiration of the plants, the leaves and other organs are rapidly dehydrated, forming a dry, causing the phenomenon of green and yellow leaves.
Therefore, the grouting water in this period must pay attention to:
First, try to use water-saving irrigation measures such as sprinkler irrigation to reduce the amount of single irrigation and shorten the period of absorption. After flooding the water to the ground, drain the water as soon as possible and shorten the flooding time.
The second is to avoid watering during high temperature period, just like spraying drugs to prevent and cure diseases, and work in the morning and evening when the temperature is low.
Third, in the event of symptoms, timely follow-up and topdressing, combined with a spray and three defenses, through the foliar to add water and nutrients, slowing the rate of water loss of the leaves until the roots return to normal.
Whether the irrigation should be done according to local conditions during the grain filling period of wheat should be comprehensively determined according to various factors.
Grouting water is good, which is conducive to further increase of wheat yield. If the technology is not well mastered, it will not only increase production, but will lead to loss of production and waste of water resources and human resources.
A look at "days"
That is to say, there is much precipitation during the filling period. If the precipitation process with precipitation above 20 mm occurs in the wheat filling period (May 10 to 25), the slurry water may not be poured. If the precipitation during the filling period is small, the slurry water may be considered.
Second, look at the "ground"
That is to say, the fertility basis of the soil, the soil with high soil fertility may not be watered, because the soil fertility is high, which can partially compensate the relative lack of soil moisture. The effect of not pouring the slurry on the yield is small, and the pouring of the slurry may lead to the yield. decline. For plots with general soil fertility levels and sandy soils with poor water retention, the slurry should be watered.
Three look at "species"
That is to say, the varieties of wheat planted, the varieties with strong drought and water-saving can not be watered. High-quality strong gluten wheat varieties, it is best not to grout the pulp water, which is conducive to improving the grain quality. However, there is still a certain increase in the production of grouting water for conventional varieties, and watering can be considered.
Four look at "Miao"
The group is too large, the amount of topdressing is too large, and the land with risk of lodging does not pour the slurry, because if the water is not poured, even if it has an impact on the output, the magnitude is not large, and once it appears to fall, the yield is reduced more and the risk is greater. .
Five look at "water"
That is to say, according to the number of watering in the previous period, the wheat field that has been poured with 3 waters of fresh water, jointed water and flowering water must not be watered.
In the face of hot weather, how to better grout water to prevent wheat from dying, have you learned?
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