Sowing time and method of winter wheat

Winter wheat is sown at the autumnal equinox and solar terms.

After entering the autumnal equinox, the temperature in the north and south will drop rapidly, leaving a short sowing window for winter wheat, which requires farmers to sow in time, and it is best to complete the sowing of winter wheat at the best sowing date. Because it is not good to sow too early or too late, winter wheat sown too early is prone to freezing injury before winter, and winter wheat sown too late can not guarantee normal growth accumulated temperature, and it is difficult to form strong roots and strong seedlings.

In the long-term agricultural production, the older generation summed up the agricultural proverb that "the white dew is early, the cold dew is late, and the autumnal equinox is the time to plant wheat", which is actually very instructive and applicable to most winter wheat planting areas in China as a whole. This agricultural proverb means that it is too early to sow winter wheat in the Millennium solar terms, too late to sow winter wheat in the cold dew solar terms, and it is just right to sow winter wheat in the autumn equinox solar terms.

Sowing depth of winter wheat

The sowing depth of winter wheat will have a great influence on seed germination and seedling growth. This paper summarizes the sentence "one inch is shallow and two inches are deep, not deep, not shallow and half deep". 1 inch is 3.3 cm. It is too shallow to sow winter wheat below 3 cm and too deep to sow winter wheat above 6 cm. Generally, the sowing depth is 4-5cm.

Therefore, the sowing depth of winter wheat should be suitable, too shallow or too deep is not good, and too shallow sowing and low surface water content are not conducive to seed germination and emergence; Too deep sowing will increase the nutrient consumption in the process of digging seedlings, which is not conducive to the formation of strong seedlings.

Generally speaking, when the soil moisture is suitable, the sowing depth of winter wheat is 3-5 cm. The specific situation should be detailed, such as: sufficient soil moisture, poor soil fertility, late sowing, and the appropriate sowing depth of winter wheat is 3-4 cm; If the soil moisture is poor, the soil fertility is rich and the sowing is early, the sowing depth should be 4-5 cm; Large seeds are 4-5 cm, and small seeds are 3-4 cm; The field is dry, so you can sow to a depth of 5-6 cm.