Winter irrigation is safe wintering in winter in northern China, and it is an important measure for preventing frost and drought in early spring. Linyi City Bureau of Agriculture experts found that some farmers in the city did not understand the essentials of winter irrigation. To this end, experts reminded the majority of farmers, wheat winter irrigation should pay attention to the "three look and one fitness", that is, to see the situation, see the temperature, see the seedlings, watering, otherwise it will be counterproductive or the effect is not obvious.
According to agro-technical experts from the Municipal Bureau of Agriculture, winter wheat irrigation has a lot of advantages. According to the survey, the number of ears per acre in winter irrigation increased 123,000 spikes, the number of grains per spike increased by 6.7 grains, and grain weight increased by 1.3 grams, and the yield increased by 27%.
Agricultural experts reminded that winter irrigation in wheat is the first thing to look at when it comes to flooding, and where the water holding capacity is less than 80% before winter and the wheat fields with irrigated conditions should be treated with winter irrigation. The second is to see the situation of the seedlings, and the number of tillers per plant is more than 2 wheat fields. Winter irrigation is more appropriate. Weak seedlings and wheat fields, especially single seedlings that are sown in late days, are best not to be fed in winter, or they are prone to frost damage. Overgrown wheat fields may be postponed or not filled with winter irrigation so as to control their growth and prosperity. The last is to look at the temperature, the appropriate time for winter irrigation, generally begins when the daily average temperature drops to 8°C, and ends when about 5°C. The masses' experience is "night freezing, winter irrigation is just right." Early winter irrigation, high temperatures, large evaporation, can not receive the desired effect; winter irrigation late, the soil is frozen, the water can not be in time infiltration, water ice area, wheat seedlings easily suffocate under the ice, or the ground Form ice ling, lift up the clod, break the wheat root, and hang the wheat seedlings. The order of winter irrigation is generally to infiltrate poor clay land, low-lying land, and post-irrigation water-rich sand land; first to fill the second and third types of wheat fields where the bottom is insufficient or the surface of the table is poor. A wheat field with a long growing trend.
In addition, wheat winter irrigation should also pay attention to adequate watering. Usually 50-60 cubic meters per mu. In order to save water, we must do a lot of matching facilities to prevent flooding. After the winter irrigation, we must remove the loose soil in time to heal the cracks so as to increase the temperature and prevent the dead seedlings from being blown.
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