Seedling prematurely formed
The leaves of the seedlings are slender and the tillers are insufficient. The main stem and part of the big stalk enter the two-edge period before winter. This kind of wheat seedlings tend to be weak before and after the winter. In the winter, when the temperature is low for 10 hours and 10 °C, the cold temperature will be frostbitten. It should be suppressed at the right time to inhibit the growth of the main stem and big stalk of wheat, and control the length. The suppression should be carried out on a sunny morning. If there is frost or dew is not dry, it cannot be suppressed to avoid injury. After the suppression, it is necessary to timely draw and pour winter water, and at the same time apply 15 kg of ammonium bicarbonate per 667 square meters. If necessary, spray a 0.2% to 0.3% chlormequat solution to suppress prolonged growth and prevent freezing damage.
Wang Miao
The seedlings are crowded, the individual development is poor, and there are few tillers. The seedlings should be timely released, and the fertilizer should be supplemented with water. Thinning seedlings can establish a suitable group structure and promote individual development. Sparse seedlings combined with watering to supplement the amount of available nitrogen fertilizer and phosphate fertilizer.
Wang Miao
There are many wheat seedlings, the leaves are wide, and the field is closed. The roots should be deepened, and 5 to 7 cm deep in the rows of wheat fields, cut off some secondary roots, control nutrient absorption, inhibit tillering, and cultivate strong seedlings.
Wang Miao
The sowing of spring and weak spring wheat varieties will lead to long pre-winter and easy to suffer from freezing damage. On the basis of the suppression of the slashing, the soil is rooted in the winter before the roots are applied, and the organic fertilizer is applied to protect the wheat seedlings for safe wintering.
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