Wheat pre-winter management guarantees a good harvest in the coming year

1. Seedlings fill seedlings. When one leaf is in one heart or two leaves, when the seedlings are found, it is found that the lack of seedlings and severe ridges is more than 10 centimeters, and the seedlings are transplanted and transplanted.

2. Pour well over winter water. It is an important measure to ensure the safe winter wheat. Its role is to ensure the physiological water requirement during the wintering of seedlings; to adjust the temperature range, to increase the temperature, to ensure that the wheat is free from freezing during delivery, to prevent winter wheat dead seedlings; to practise soil; to take the initiative in early spring management, so that winter water The use of spring to solve the contradiction between low temperature and turning green.

Winter pouring time: Generally, the daily average temperature drops to around 4-5°C (winter to light snow). It is better to pour the winter water when it is cold. After pouring, it is only too late to freeze.

The winter irrigation should be reasonable, should first cast a strong Miaotian, after pouring weak seedlings field, prudent Miao Miao fields; more rain before the winter, the soil moisture content of more than 18% do not cast; late buckwheat, short growing period before winter, the effective accumulated temperature less, less root With less leaves and fewer tillers, the effective temperature accumulation in the early winter and early spring will be used to win more points, and it will not be poured out in winter.

3. Apply fertilizer as appropriate. When sowing, the wheat field with insufficient dosage of basal fertilizer or wheat fields with severe defertilization can be poured and poured over winter water, and mu will recover about 10 kg of urea to play the role of winter fertilizer and spring. For the small group, the total number of stems in the field of 50-600 thousand / mu less than the combination of water for fertilizer; the total number of stems in more than 700,000 wheat fields, generally do not apply or less fertilizer.

4. Rolling. Before rolling over the winter, it will help close the roots and soil, prevent the wheat from freezing and dying, and increase the temperature of the loose soil, promote the roots and increase the weight, press the soil to raise the earthworms, suppress the strong and help the weak, control the prosperous and strong, and control the main to promote the delivery. The role. However, it should be noted that the land should not be subject to roller compaction in the wet, morning and cloudy days to prevent it from being compacted. Overcrowding in wheat fields can inhibit the growth of the main functional stems and scorpions, and make the seedlings uniform and strong. After watering in winter, it should be shallow or squat in time to break the soil compact and bridge the cracks.

5. Weeding. Can adopt cultivator weeding and chemical weeding two methods.

Application period. After 4 leaves (mid-November to early December), weeds in wheat fields are suitable. General application of pesticides in sunny days and no frost and heavy rain within 4 days, the best temperature is 10-20 °C, 4 hours can be basically absorbed, the minimum temperature when medication is not lower than 10 °C, to avoid the effects of low temperature and produce phytotoxicity.

Available 72% of 2.4-D butyl ester EC, 50 ml per mu, spray 40-50 kg of water.

6. Forecast of pests and diseases. We must do a good job in the investigation and prediction of the overwintering bases of pests and diseases so that we can make early detection and early prevention and control, prevent the spread, and strive to control the hazards in the bud. If no pesticide is applied at the time of sowing and the soil pests are found to be harmful during the seedling stage, use phoxim 16 g + 50 kg water or methyl isoflurille 13 g shunmai ridge to water, or use phoxim 50-70 g mixed soil. 50 kilograms are sprinkled on the base of the wheat seedlings.

7. Grazing is strictly prohibited. Preventing sheep and cattle from eating wheat seedlings, the temporal lobe not only reduces the area of ​​green leaves, reduces the nutrients produced, and returns to green slowly, but also tends to the tillering section and leaf sheath (a large number of nutrients and sugars accumulate in this), which can easily cause freezing damage.

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