Detailed Explanation of Key Technical Points for Spring Field Management of Rapeseed
Rapeseed is a cruciferous plant native to China, mainly distributed across provinces such as Anhui and Hunan in China, and is popular with many people. As spring arrives, rapeseed cultivation has also entered its peak period. When we plant rapeseed in spring, there are certain requirements for field management. So how should rapeseed be managed in spring? Below, the editor brings you the spring field management techniques for rapeseed. Let's take a look.
1. Clearing ditches and draining water
As the snowy days of winter pass, spring brings long periods of rainy weather. Therefore, the continuous low-temperature environment causes the soil moisture content to become too high. If the water is not drained in time, it will seriously affect the respiration of rapeseed roots, leading to oxygen deprivation and rot, and causing undesirable phenomena such as lodging, which increases the incidence of pests and diseases. Therefore, when the rain stops, we should promptly clear the ditches, drain excess standing water from the field, and reduce humidity. Do a good job of soil insulation to avoid waterlogging and freezing damage. The wet soil in the ditches can be used for hilling up to prevent lodging, with particular attention to plots where seedling upheaval is relatively serious.
2. Picking moss and topdressing fertilizer
If the temperature is relatively high in winter and spring, rapeseed will be affected by this and its growth process will speed up. Especially for some early-maturing varieties and early-sown rapeseed, the time of bolting and flowering will be much earlier. Therefore, they are more susceptible to freezing damage. For these rapeseed plants that flower and bolt early, we should do a good job of picking the moss. The picked flower moss can also be eaten as a vegetable, and it can effectively delay the flowering time and prevent freezing damage. After picking, topdress fertilizer once in time, mainly with urea, to restore the growth of rapeseed as soon as possible.
3. Spraying pesticides in time
If there is insufficient water and relatively high temperatures in the autumn and winter of the previous year, then the flowering period of rapeseed will not only be advanced, but the plant will also lack nutrients such as nitrogen and phosphorus. In spring, if low-temperature and rainy weather occurs, it will further provide conditions for disease development. Therefore, in the early flowering stage of rapeseed, we should spray foliar fertilizer at the appropriate time to promote the growth of rapeseed. Prevent undesirable phenomena such as flowering without setting seed and premature aging. Avoid diseases such as sclerotinia and improve the resistance of rapeseed, and strengthen the prevention and control of pests and diseases.
4. Pest and disease control
Pests and diseases cause great harm to rapeseed. If prevention and control are improper, it may cause reduced yield in mild cases and total crop failure in severe cases. Common pests and diseases of rapeseed include sclerotinia, viral disease, and aphids. Among them, aphids are also one of the main carriers of the virus that causes viral disease. Therefore, we should pay special attention to the prevention and control of aphids. Frequently inspect the growth of rapeseed to promptly discover whether there are abnormalities. After discovering abnormal phenomena, promptly identify the specific cause, then take corresponding measures. Do not blindly use pesticides to prevent phytotoxicity.
The above is a brief introduction to the spring field management techniques for rapeseed. Rapeseed should not only be managed with emphasis in spring. No season can be neglected. Only by doing the most basic management work well can we ensure the healthy growth of rapeseed and increase yield. That is all for today's introduction. This article is for reference only, and we hope it can help everyone!