Latest roundup of common winter wheat sowing mistakes
Recently, the period of concentrated winter wheat sowing has arrived, and a little carelessness during wheat sowing can lead to common winter wheat sowing mistakes, which at best affect wheat emergence and at worst cause seed rot and dead seedlings. So what should be paid attention to when sowing winter wheat? Follow the editor below and take a look.
1. Sowing too early
If wheat is sown too early, then after the seedlings emerge, the leaves will be narrow and long and tillering will be insufficient. The main stem and some of the large tillers will enter the double-ridge stage during young ear differentiation before winter, and when winter temperatures drop to minus 10 degrees Celsius, freezing damage will occur. Therefore, when sowing in winter, timely compaction should be carried out to inhibit the growth of the main stem and large tillers. After compaction, hoeing can also be done in time, and if necessary, a chlormequat chloride solution can be sprayed to control excessive growth and resist freezing damage.
2. Sowing too late
The pre-winter growth period of winter wheat is already short. If sowing is too late, then accumulated temperature will be insufficient, which will lead to thin and weak wheat seedlings and fewer tillers. Therefore, farmers should focus on hoeing and supplementing fertilizer and water, applying nitrogen fertilizer at the three-leaf stage of the wheat seedlings. For wheat fields with poor soil moisture and rapid water seepage, tillering water should be applied promptly after the three-leaf stage; while for plots with suitable soil moisture or with heavy clay soil and poor water permeability, watering before winter is not advisable, so as to avoid excessive growth of the wheat seedlings.
3. Sowing too shallow
The suitable sowing depth for wheat is about 3-5 cm. Sowing too shallow will cause the wheat seedlings to grow prostrate, expose the tillering nodes, and produce many small tillers, making them susceptible to freezing and premature aging. Therefore, farmers can compact ICI several times before the wheat seedlings emerge, and after emergence combine hoeing with earthing up around the roots. If necessary, during the overwintering period, foreign soil covering or applying “mengtou manure” can be used to prevent freezing damage during overwintering.
4. Sowing too deep
If the sowing depth of wheat exceeds 5 cm, then it is sowing too deep. Sowing too deep will cause the wheat seedlings to emerge more slowly, and because more nutrients are consumed during emergence, the leaves will be slender, the tillers few and small, and the secondary roots few and weak, with the wheat seedlings yellow and thin. At this time, soil should be removed promptly to clear the seedlings. Using a bamboo rake or iron rake, start from the center of the bed surface and rake horizontally along the rows. When reaching the last row, drag all the remaining soil onto the bed ridge.
The above is an introduction to common winter wheat sowing mistakes. We hope it can help you. To learn more related knowledge, please stay tuned to us.