T/CQAAS 003-2024 The cultivation technology specification for reducing fertilizer application and increasing efficiency of spring potatoes

Scope

Main Technical Content: 3.1 Reduced Application of Chemical Fertilizer According to the nutrient demand rules of potatoes, this measure aims to reduce chemical fertilizer input, improve fertilizer utilization efficiency, and achieve increased yield, soil fertility improvement, and economic benefits through optimizing fertilizer formulations, fertilizer types, application rates, application methods, and application frequencies. 4. Preparation of Seed Potatoes 4.1 Variety Selection Select high-yielding varieties. It is recommended to use detoxified seed potatoes, and the quality of seed potatoes should meet the requirements of GB 18133. 4.2 Seed Potato Treatment Before seed potato treatment, remove impurities and inferior seeds, and discard diseased, rotten, or defective seeds. It is recommended to sow small whole seed potatoes, with a size of 30–50 g per seed. Seed potatoes larger than 75 g should be cut into pieces, with a vertical cut near the bud eyes. Each piece should weigh 30–50 g and contain 1–2 bud eyes. The cutting knife should be disinfected with 75% alcohol while cutting. The seed potatoes should be disinfected with a 500-fold solution of 58% Metalaxyl-MnZn WP or a mixture of 2 kg of pesticide (2.5 kg of 58% Metalaxyl-MnZn WP + 1.5 kg of 80% Allicin EC + 25 kg of talc) per 50 kg of seed potatoes. 5. Tillage and Sowing 5.1 Soil Selection The soil environment should meet the requirements of GB 15618 for soil environmental quality, and the content of pollutants in the soil should be lower than the risk control values for agricultural soil pollution specified in GB 15618. It is recommended to select sandy loam or loam soils with thick soil layers, loose texture, and good air permeability. 5.2 Tillage Requirements Before sowing, the land should be deeply plowed, rotary tilled, leveled, and finely crushed. The ridge height should be 20–25 cm, and the ridge spacing should be 100–120 cm. 5.3 Sowing Methods It is recommended to use

Development Information

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