In response to the unique characteristics of spring wheat seedlings and soil moisture conditions, the key focus of early spring wheat management is to promote growth, strengthen seedlings, and enhance plant density. To achieve this, it's essential to start from the seedling stage, manage fertilization and irrigation properly, implement targeted field management, and accelerate the transition of seedlings into a more robust growth phase.
To ensure effective spring wheat management, several key practices should be followed:
1. **Management of Dry Wheat Fields**: For fields where soil moisture is below 60%, irrigation should be applied before and after green-up. This should be combined with top-dressing, typically applying 10–15 kg of urea per mu. Adjustments should be made based on the condition of the seedlings and the previous year’s fertilizer application.
2. **Management of Weak or Delayed Seedlings**: For second- or third-class fields with small, weak plants that still green up normally, cultivation should be done before and after green-up. Watering should be delayed until after the soil thaws, with 12–15 kg of urea per mu applied during irrigation. This helps consolidate winter reserves, promotes spring growth, enhances root development, and increases leaf area, ultimately boosting population and yield.
3. **Management of Strong Seedlings**: In fields with healthy seedlings and favorable growing conditions, deeper plowing should be done during the green-up period. It's important to control the production of non-productive tillers and reduce nutrient consumption. If possible, irrigation can be delayed until the late green-up or early jointing stage, with 10–12 kg of urea per mu applied during watering.
4. **Pest and Weed Control**: Early spring focuses on controlling diseases like sheath blight, pests such as spider mites, and weeds. The approach emphasizes protecting and utilizing beneficial organisms, using agricultural methods as the main strategy, with chemical controls as a supplement.
5. **High-Quality Wheat Cultivation**: This year, the city has 2.8 million mu dedicated to high-quality strong gluten wheat. Management in early spring must follow advanced cultivation techniques suited for these varieties. Key considerations include promoting water-saving irrigation, reducing the number of irrigations, and applying key water at critical times. Nitrogen fertilizer use should be minimized, with base fertilizers often sufficient if applied properly. Weeds should be removed, and other management practices should align with those used for regular wheat.
By implementing these strategies, farmers can optimize early spring wheat growth, improve crop resilience, and set the stage for a successful harvest.
Fluorine-Containing Phenylamine
Most of the Fluorine-Containing Phenylamine products are a light yellow oily liquid, relatively high density, insoluble in water. Most of them are used in the manufacturing of pesticides and dye intermediates, small part of them can be used as an analytical reagent. The steam or smoke of fluorine-containing phenylamine series is irritated to eyes, mucous membranes and upper respiratory. Vapor and air can form explosive mixtures, in case of fire, high-heat combustion caused the explosion. And oxidant may react. Decomposition by high fever and emit toxic gases. In case of high fever, increased pressure within containers, cracking and the risk of explosion. Protective measures must be done carefully during product storage. Once the fire occurred, it must be immediately evacuated from air leakage,personnel to a safe area, prohibit access to the contaminated area. Recommended emergency personnel wearing self-contained breathing apparatus and wear chemical protective clothing. In the ambulance personnel to ensure proper safety measures, immediately use foam, carbon dioxide, dry, sandy soil to put out a fire.
Containing Phenylamine,2-Bromo-4-Methoxy-Phenylamine,5-Fluoro-2-Iodoaniline
Taizhou Volsen Chemical Co., Ltd. , https://www.volsenchem.com