In plain wheat areas, proper management of weak and strong seedlings is crucial for optimal yield. For fields with good sowing quality but signs of nutrient deficiency, it's recommended to apply irrigation, top-dressing, and spray Chlormequat during the jointing stage. This helps improve plant health and promote better grain development. In fields with sparse populations, insufficient nutrients, or severe nutrient deficiencies, timely top-dressing is essential to encourage more tillers and increase the number of productive spikes. Water should be applied first, followed by urea after drainage. Avoid applying water immediately after fertilizing, as this can lead to nutrient leaching. The amount of top-dressing should be adjusted based on the condition of the seedlings and previous fertilizer use—typically 5–10 kg per mu.
For large, vigorous fields or those with high plant density, growth regulators like Chlormequat or dwarf can be sprayed early in the jointing stage to control plant height and reduce lodging risk. This ensures better structural integrity and improves grain quality.
In hilly dryland wheat regions, where water availability is limited, effective water conservation techniques are necessary. Small water storage structures such as fecal pits and ponds can be used to capture and store rainwater for irrigation. Applying about 10 kg of urea per mu can help replenish soil nutrients. In the Sichuan Basin, where phosphorus deficiency is common, using diammonium phosphate not only provides nitrogen but also supplements phosphorus. A typical application rate is 20–25 kg per mu.
Disease and pest control is another critical aspect of wheat management. Stripe rust must be monitored closely to prevent its spread to central disease zones. During April, when wheat enters the flowering and filling stage, affected fields should be treated promptly to maintain plant health and leaf function. Head blight is a major concern during the heading and flowering period, especially with frequent spring rains. Preventive measures should be taken during this time. Additionally, powdery mildew in dry hill areas requires attention. For locusts, increased monitoring and regional cooperation are needed. Technical support and coordinated control efforts should be strengthened to minimize damage.
Finally, maintaining proper moisture levels in rice and wheat fields is essential. The jointing to heading stage is a sensitive period for wheat, and excessive moisture can reduce root activity and nutrient uptake. In severe cases, many tillers may die, leading to lower spike formation rates. Before the spring rain season begins, farmers should prepare ditches and drainage systems to lower the groundwater level and prevent waterlogging. Effective drainage ensures healthy root development and supports better overall crop performance.
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