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As wheat enters the regreening stage in many places, the number of farmers who irrigate the regreening water in the field gradually increases, so as to promote the normal regreening of wheat and facilitate the subsequent growth.
The little helper received a message from some friends, their local maximum temperature during the day has reached about 20 degrees, the average daily temperature is more than 10 degrees, and some farmers in the field are already watering the green water.
From the analysis of the actual planting situation of wheat, not all plots of wheat need to be watered, and some wheat fields may have the opposite effect after watering the green water, not only not to increase the yield, but also to reduce the yield. The 4 situations that the little helper is going to talk about below do not need to water the wheat back to green.
If the field moisture is good and the soil is not short of water, there is no need to water in the regreening period, which saves time and costs (watering an acre of land also costs one or twenty yuan). If it is forcibly watered, it is easy to form stagnant water in relatively low-lying plots, and it will also affect the growth of wheat.
For example, in the eastern Henan region where the helper is located, during the winter (wheat overwintering period), we have relatively sufficient snowfall here, and around mid-February, there was a snowfall.
The snow water after the snowfall melts is a good supplement to the water in the field, and the current time has reached the beginning of March, and the moisture is relatively good when you go to the field to check the moisture, so you don't have to rush to water the green water.
In the same way, if there is a relatively high amount of snowfall during the winter in your local area, and the plots that have been winter-irrigated before the onset of the wintering period, the wheat will not need to be watered. After entering the jointing stage, decide whether to water or not according to the moisture in the field.
After the wheat entered the regreening stage, some wheat seedlings grew higher and showed vigorous growth. Especially in the wheat fields that have been growing vigorously a few years ago, but have not been controlled, after entering the rejuvenation period, do not water the green water again.
The wheat field that grows vigorously in the rejuvenation period should be mainly controlled, and if it is watered and fertilized, it will only make the situation more and more serious. Wheat, on the other hand, grows very tall, but the stem is thin and the root system is not firm, and it is easy to lodging in the middle and late stages.
For the vigorous wheat field, when the water is not irrigated, to a certain extent, it is conducive to the lack of water and can inhibit the growth, in other words, the appropriate drought at this time is conducive to the control of prosperity.
After the wheat enters the jointing period, there is no effective rainfall in the local area, the field soil is relatively dry, at this time you can water the pullout water, if the jointing period, the moisture is also very good, then the subsequent growth period, no watering can also be.
When wheat enters the regreening period, there are many kinds of management work, among them, weeding work is very important, especially the plots that have not been weeded before the year, and when the wheat returns to green after the year, the weeds also begin to return to green, and herbicides need to be sprayed in time.
And for plots that have just finished herbicide, don't rush to water back the green water. On the one hand, during the watering process, the weed blades will be stained with a lot of water, or they will be washed directly against the leaves during watering. At this time, the effect of the herbicide has not yet been played, and the weeds have not completely absorbed the herbicide solution, and after coming into contact with water, the concentration of the herbicide will be diluted, thereby reducing the weeding effect.
On the other hand, after spraying herbicides, weeds absorb the herbicide solution, and according to the different components of the herbicide, the dead weeds time is also fast and slow. In the case of fast, it will take 5-7 days, and in the case of slow, it will take 15-20 days. In the early stage of weeds absorbing herbicide solution, if watered, it will inevitably affect the weeding effect, in addition, after watering, to a certain extent, it also promotes the recovery of weeds.
Therefore, if the plot has just been sprayed with herbicide, do not go to water the green water. How many days can I go to water? It is recommended to go to water again after 2 days, and there is no rush for these two days.
After the growth of wheat in different regions in winter, due to the different climates and the growth of wheat itself, some plots will be frost damaged.
If it is a plot with general frost damage, such as only the leaf tip is yellow, the stem, root system, main stem, etc. are normal, after the wheat enters the regreening stage, it can be watered and topdressed to alleviate the impact of frost damage and promote the recovery of wheat growth.
However, if the plot with severe frost damage, such as the whole wheat plant has turned yellow, gently lifting the wheat seedlings upwards by hand, it can be very simple to break from the root, and then check the root system, the root system has also rotted.
In this case, there is no need to pour back the green water, and it is a waste to water it. Therefore, such wheat fields have no remedial value, and watering and topdressing are equivalent to wasting money.
Therefore, for wheat fields with severe frost damage, it is recommended to wait until the end of March or early April to replant spring-sown crops, such as spring corn, spring soybeans, spring peanuts, etc., in time to reduce losses.
The above four types of wheat fields are the plots where the wheat does not need to be watered after the wheat enters the green period. The little helper believes that some farmers will encounter the above situation to a greater or lesser extent in the process of growing wheat.
Keep in mind that not all wheat fields must be watered, and local conditions should be adapted to suit the planting benefits to maximize.
Ask everyone, is your wheat starting to be watered back now?