1, What are the benefits of winter irrigation?
Wheat timely winter irrigation, the first is to stabilize the temperature, to prevent the freezing of dead seedlings; the second is to be able to sink the soil, crush the rubbish, eliminate overwintering pests; third is the combination of winter water and winter fertilizer, can create good conditions for the spring wheat turn green and root growth. In addition, the saline-alkali wheat fields can be fed in winter and can also be alkali-modified. According to the survey, compared with unsealed winter wheat fields, the number of ears per mu increased by 123,000 spikes, the number of grains per spike increased by 6.7 grains, the grain weight increased by 1.3 grams, and the yield increased by 27%.
2, what kind of wheat field to winter irrigation
Whether or not winter wheat is needed for irrigation depends on the situation of the flood season. Where wheat fields with water below 80% in the field before winter have irrigated wheat fields, winter irrigation should be carried out. Secondly, it depends on the situation of the seedlings, and the number of plants per plant is 1.5-2. In wheat fields, winter irrigation is more appropriate. Generally weak seedlings, especially single seedlings that are sown late, are best not to be fed in winter, otherwise it is prone to frost damage.
3, what time winter irrigation
The suitable time for wheat winter irrigation is generally started from the drop of the daily average temperature to 7°C to 8°C, and ends at about 5°C. The farmer's experience is: "Freezing and eliminating in winter, and winter irrigation is just right." Winter irrigation is too early, the temperature is high, evaporation is large, and the effect is not enough; winter irrigation is too late, the soil is frozen, the water cannot be infiltrated in time, the water in the ground area is frozen, and the wheat seedlings are easy to suffocate or die under the ice. Bing Ling, lift up the clod, break the wheat root, hang the wheat seedlings. The sequence of winter irrigation is generally to infiltrate the poor clay ground, low-lying land, and later infiltrate the water-rich sand land; the second and third types of wheat fields with insufficient irrigation or poor surface mulching are used. Early, and there is a long trend of wheat.
4. What is the amount of winter irrigation?
Winter wheat irrigation should not be too large, generally 50 to 60 cubic meters per mu. In order to save water, we must do a lot of matching facilities to prevent flooding.
5, how to manage after winter irrigation
After wheat is irrigated in winter, it is necessary to mark the loose soil in time to heal the cracks so as to increase the temperature and prevent the dead seedlings caused by the wind blow.
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