#Sannong High Quality Creation Contest Season 2 #In recent days, driving on the endless winter wheat fields in Henan, you will find that the whole wheat seedling is a green and oily piece, and some of the whole field wheat seedlings are all frozen to death, showing a piece of loess. What is the reason for this phenomenon, which accounts for half of this phenomenon?
At present, it is the period of the Little Snow Festival, this year's weather is abnormal, the temperature is much lower than the same period in previous years, and the temperature in the morning and evening is around 0 °C. This has a great impact on some wheat seedlings that are late sown, dry plots, shallow sown soil layers, and weak wheat seedlings.
This year's wheat sowing early, early autumn rain, wheat germination fast, seedlings, rapid growth, plants in a suitable environment tillering is very normal, vigorous growth, wheat seedlings are strong, cold resistance, low temperature resistance, therefore, in the low temperature, it is not easy to freeze to death, so green and oily.
Some farmers delay time due to weather, housework, etc., delay the sowing of wheat, there will be many problems, resulting in wheat seedlings in a low temperature environment cold resistance is poor, there will be frost damage, the occurrence of the whole wheat seedlings death. The main reasons are:
(1), the sowing time is delayed. In the Henan region, all the wheat sown during the cold dew festival to the frost festival generally germinates quickly, emerges in unison, grows strongly, tillers are very normal, green and oily, and can resist low temperature and cold. Delayed sowing, such as wheat sown before and after the beginning of winter, due to low temperature, slow emergence of seedlings, seedlings are not neat, when encountering low temperatures, poor cold resistance, easy to frostbite and frostbite.
(2), the sowing soil layer is shallow. Wheat is sown late and the sown soil layer is relatively shallow. The shallow soil layer is relatively dry, slow germination, and slower growth, resulting in thin seedlings and weak seedlings. Such wheat seedlings are very intolerant to low temperatures, so in low temperature environments, they are frostbitten to death.
(3), soil moisture decreases. Some wheat plots are very dry, and some wheat sown is relatively shallow, resulting in drought of wheat seedlings, poor growth and development, slow tillering, and the formation of thin seedlings and weak seedlings. Such wheat seedlings have very poor cold resistance and are very susceptible to frostbite and frostbite. This is frost damage caused by low soil moisture. If the sowing is earlier, the sowing soil layer is suitable, so that the wheat seedlings grow normally, the tillers must be normal. Such wheat seedlings are very strong, strong in cold resistance, and are not easy to freeze to death.
(4), wheat seedlings are relatively thin. The main reasons for the thinness of wheat seedlings are that the sowing is too late, the sown soil layer is too shallow, the soil is dry, and the soil base fertilizer is not sufficient, resulting in slow growth, slow tillering, and wheat seedlings. Such wheat seedlings are very intolerant of low temperature, poor resistance, not resistant to cold, and are easily frostbitten to death by low temperature frostbite.
Prevent thin wheat seedlings, safely overwinter, half a month before cooling, take advantage of the good weather, increase moisture retention for the surface seedlings, promote growth, or combine with the application of nitrogen fertilizer to promote the rapid growth of wheat seedlings, so that tillers are normal, and soil insulation can improve the cold resistance of wheat seedlings. You can also use 0.3% potassium dihydrogen phosphate plus 1% urea in high temperature and sunny weather, and you can also add brassinolide to promote the growth of wheat seedlings, make wheat seedlings strong, improve cold resistance, and make wheat seedlings less prone to frostbite in low temperature environments.
[The above is my point of view, if there is something inappropriate, please leave your valuable comments in the message area, and actively participate in the comments, specially invite everyone to pay attention to the three rural areas in eastern Hubei, discuss the three rural issues together, picture source network, infringement and deletion. 】