After the Mid-Autumn Festival, the winter equinox is about to usher in the autumnal season. According to the past planting experience, many wheat farmers do not pay attention to details when sowing, it is easy to enter the misunderstanding of winter wheat sowing, affecting the emergence of winter wheat. Recently, the reporter interviewed Zhang Gaixue, a professor at the Agriculture College of Northwest Agriculture and Forestry University, and asked him to talk to wheat farmers about the misunderstandings that winter wheat should be planted. Variety selection Zhang Gaixuan said that choosing a variety is very important. The sowing of spring and weak winter varieties in the Zhonghe and early inhabited plots will lead to a prolonged winter wheat seedlings, which is not conducive to safe wintering. Should be based on early scratching, repression on the basis of pre-winter soil encircling the roots, or cover "smite head" to protect the wheat seedlings safe winter. Sowing too early If the wheat is planted too early, the leaves will be long and long, and the leaves will be insufficient. The main stem and a part of the big ear will differentiate into the two-legged period before the winter spike, and will experience freezing when it encounters a low temperature of -10°C in the winter. . Therefore, sowing should be timely suppression, inhibition of the growth of the main stem and the big pupa; pressure after the timely pluck, combined with watering, apply 15 kg of ammonium per acre, if necessary, with 0.2% ~ 0.3% chlorophyll solution foliar Spraying to control leggy and resist freezing injury. Sowing too late Zhang Gaisheng told reporters that due to the short growing season before winter and the accumulated temperature is insufficient, wheat seedlings grow thin and thin, and there are fewer tillers. Therefore, wheat cultivators should rely mainly on ploughing and replenishing fertilizers, applying 10 to 15 kg of ammonium bicarbonate per acre for the three-leaf stage; soils with poor soil moisture and fast water seepage should be flooded in time after the three-leaf stage. Zhang Gaisheng reminded him that water should not be watered before the winter if the plot is suitable or where the soil is heavy and the water is poor. Sowing too shallow Wheat sowing depth of 3 to 5 cm is appropriate, sowing too shallow, the growth of young wheat seedlings, bare tiller section, more and smaller tiller, susceptible to cold and premature aging. Zhang Gaisheng suggested that wheat farmers should suppress the wheat several times before emergence. After the emergence of the crop, they should combine the roots of the rammed soil. If necessary, they can use the cover soil or cover the “headed manure†during the wintering period to prevent overwintering and freezing. Sowing too deep If the wheat is sown more than 5 cm, it is sown too deeply. Zhang Gaisheng introduced that deep sowing will lead to slow emergence of wheat, slender leaves, small and small tiller, secondary roots and weak, wheat seedlings yellow thin. The wheat grower should clear the trees in a timely manner and use bamboo sticks or shovels to start from the center of the surface of the crop. Shun the ridges to the side of the rice dumplings. When it is cleared to the last row, all the remaining soil should be dragged to the back of the crop. Zhang Gaisheng reminded wheat growers that for the proper sowing of wheat, the pre-winter clearing trees usually start from the second leaf stage and end when the “small snow†forms.
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