Rapeseed field management emphasizes on "six defenses"
Single Hand Crutches,Aluminum Crutches,Adult Aluminum Crutches,Medical Crutches Hebei Dingli Medical Equipment Co., Ltd. , https://www.dinglimed.com
June 26 08:27:59, 2025
The flowering period is a critical phase in the growth of rapeseed, and proper field management during this time is essential for maximizing yield and quality. To ensure healthy development, farmers should focus on preventing six key issues:
1. **Avoid Waterlogging**
After spring, rainfall increases, making drainage a top priority. It’s important to clear the “three ditches†(main ditch, field ditch, and side ditch) to prevent water accumulation and reduce the risk of waterlogging. This helps maintain good soil aeration and prevents root damage.
2. **Prevent Nutrient Deficiency**
As rapeseed enters its rapid growth phase, it requires sufficient nutrients. If leaves appear yellow or show signs of early aging, applying 15–20 kg of ammonium bicarbonate at the beginning of flowering can help. A foliar spray of 0.02% boric acid solution can boost the number of effective branches, pods per plant, and 1000-grain weight. Additionally, spraying a 2–3% superphosphate solution during the later flowering stage improves both yield and seed quality.
3. **Avoid Lodging**
To prevent plants from falling over, especially during heavy rains, farmers should loosen the soil around the roots and apply growth regulators. Spraying 30 grams of paclobutrazol (15%) mixed with 25–30 kg of water per acre helps strengthen the stems and reduces the risk of lodging later in the season.
4. **Ensure Adequate Water Supply**
Rapeseed requires significant water during its 30-day flowering period. Depending on soil moisture levels, irrigating 1–2 times ensures that the plants receive enough water to support flower development and pollination.
5. **Control Pests and Diseases**
Early removal of lower, old leaves improves air circulation and light penetration, reducing disease risk. For diseases like sclerotinia and viral infections, spraying 200 g of carbendazim (50%) diluted in 200 kg of water or 150 g in 50 kg of water can be effective. For locust damage, applying 40% dimethoate emulsion at a dilution of 800–1000 times helps control infestations.
6. **Strengthen Flowering and Seed Setting**
Regular application of trace elements such as phosphorus, boron, and manganese, or compound organic fertilizers, during the bud and early flowering stages can improve flowering and increase seed-setting rates. Using 100 grams of borax dissolved in a small amount of hot water and then diluted in 50 kg of water for one or two sprays can enhance grain filling and overall yield.
By addressing these six key areas, farmers can significantly improve the health and productivity of their rapeseed crops during the critical flowering period. Proper care not only supports plant growth but also lays the foundation for a successful harvest.