After the wheat seedlings were frozen, they

The prosperous growth of wheat before freezing will reduce the accumulation of nutrients in the plant, lead to an earlier growth period, reduce the ability to resist cold, be prone to frost damage, and cause seedlings to die in the event of serious frost damage, leading to a significant drop in yield and even loss of production. Due to the good lye during wheat planting in the Huanghuai region of China this year, the temperature of the wheat is high after the emergence (in October this year, the temperature in many places is 1°C~3°C higher than the normal year). Although the “winter” has arrived, but the wheat Still continue to grow, resulting in some of the phenomenon of prosperous wheat fields. Therefore, it is particularly important to do a good job of controlling and prospering wheat. To control the growth of wheat seedlings, the following methods can be comprehensively used: First, timely repression and repression should be carried out before freezing, and repression has the effect of “control and promotion”. Repression can not only collapse the soil, make up for cracks, prevent running through the wind, and kill dead seedlings, but it can also effectively suppress the main stem and branches, promote roots under the bar, and make the wheat seed strong and not prosperous. The commonly used repression method is artificial pedaling. The repression should be carried out in the afternoon on a sunny day. Do not repress the frost when the frost is not frozen or when the dew is dry so as not to damage the wheat seedlings. Do not excessively suppress the number of times, usually 1 or 2 times. Repression is too heavy and damages wheat seedlings easily, causing a reduction in production. Second, the deep cultivator cut roots with sufficient fertilizer and water, when the wheat seedlings grow to 5 to 6 leaves, the leaves were hypertrophic drape-like, that is, prosperous. The methods of inter-bank deep cultivating and cutting off roots should be used in time to control their growth. Row cultivators range from shallow to deep, with a depth of 5 to 7 cm. Through the deep cultivator, part of the secondary roots can be cut off, thereby effectively controlling the absorption of water and fertilizer by the root system, reducing the ineffective delivery, and promoting the healthy growth of the wheat seedlings. Moreover, the cultivator also has the effect of eradicating weeds and safeguarding drought. Third, scientific fertilization watering For different types of prosperous wheat fields, scientific fertilization watering. For the prosperous wheat field where the fertility is full, as long as the soil is not dry, do not top-dressing and watering before the winter to facilitate the control of the wheat seedlings. However, due to poor soil fertility and insufficient basal fertility, the prosperous wheat fields caused by planting too early often consume too much nutrients due to the long wheat seedlings, resulting in insufficient nutrient storage in the plants and lowering the cold resistance. Appropriate amount of topdressing and watering before and after "Little Snow" will help the wheat seedlings safely pass winter.

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