What are the common problems after sowing cotton?
Cotton is one of the most important raw materials for China's textile industry, and it is grown across a wide area in China. Cotton cultivation is mostly done by sowing, so sowing is very important for cotton. After sowing cotton, you must pay attention to good management, otherwise various problems will arise, affecting seed growth and development and hindering germination. So what are the common problems after sowing cotton? Below, the editor will introduce them to you!
1. Insufficient soil moisture
After sowing, cotton has a relatively high demand for water, so after sowing we must pay attention to the soil's water content. If the soil moisture is insufficient, it will greatly hinder the germination of cotton seeds. In mild cases, it delays seed germination; in severe cases, it can prevent germination altogether. Therefore, after sowing, cotton fields with poor soil moisture and water shortage should be watered promptly, and water can be applied by making furrows around the sowing furrow. If the amount of water applied is insufficient, then after watering the soil also needs to be compacted to improve soil moisture.
2. Rain after sowing
Although cotton seed germination needs sufficient water, there should not be too much water either. Especially if it rains after sowing and no timely treatment is done, it can easily cause soil crusting, making it difficult for germinated seeds to push through the soil. Therefore, if it rains after sowing, intertill and loosen the soil promptly to break up the crusted parts of the soil and help the seedlings emerge through the soil. If the soil covering the seeds after sowing is too thick, then we also need to remove some soil appropriately to help the seedlings emerge. However, seedlings that have been helped to emerge by removing soil must not be exposed to direct sunlight, so when removing soil, be careful to leave a small amount of moist soil.
3. Uneven emergence
After sowing cotton, strengthen management while waiting for the seeds to germinate and emerge. When the seedlings emerge, promptly check the seedling emergence situation. Check whether there are undesirable conditions such as missed sowing, rotten seedlings and dead seedlings, and if so, promptly carry out germination promotion and reseeding. For some missing seedling holes, healthy seedlings of the same growth stage should be replanted promptly. When the seedlings grow one true leaf, do a good job of transplanting seedlings, trying to transplant with soil. However, note that when transplanting, pay attention to planting density, ensure sufficient growing space, and control the amount of watering well to avoid too long a recovery period after transplanting and the phenomenon of strong plants bullying weak ones.
4. Unsuitable weather
After cotton seedlings emerge, pay attention to observing weather changes, because weather changes can be very great. If the temperature drops suddenly, it will pose a great threat to cotton growth. Therefore, when the temperature drops, pay attention to hoeing the soil to raise the soil temperature. Then evenly sprinkle plant ash along the ridges to raise the temperature around the cotton plants. And under low-temperature conditions, the incidence of disease is relatively high, so we should also appropriately spray carbendazim and other agents to avoid pests and diseases affecting the growth of cotton seedlings.
The above is a brief introduction to the common problems after sowing cotton. The management work after sowing cotton is very important and is closely related to its flowering and fruiting. Therefore, everyone must pay close attention! That is all for today's introduction. This article is for reference only, and I hope it can be helpful to everyone.