Sweet pepper soil testing formula fertilization technology

1, fertilizer characteristics:

The absorption of nutrients by sweet peppers is mainly concentrated in the fruiting period. The absorption of nitrogen gradually increases with the growth process, and is mainly distributed in the stems and leaves before the result period. The absorption of phosphorus increases with the progress of fertility, but the extent of change in absorption is small. The absorption of potassium is less in the early stage of growth, and the amount of absorption increases significantly from the beginning of fruit harvesting, and continues until the end. Calcium absorption also increases with the growth period. The peak absorption of magnesium occurs during the fruit harvest period and is less absorbed in the early growth stage.

2. Fertilization technology:

At the medium fertility level, the fertilization amount per mu of the sweet pepper in the whole growth period is 3000-3500 kg (or commercial organic fertilizer 400-450 kg), nitrogen fertilizer 18-22 kg, phosphate fertilizer 6-8 kg, potassium fertilizer 12-15 kg, nitrogen. Potash fertilizer base fertilizer and three top dressings, the ratio of fertilization is 2: 3:3:2, phosphate fertilizer is used as base fertilizer, and fertilizer and farmyard manure (or commercial organic fertilizer) are mixed.

Base fertilizer: 3000-3500 kg of farmyard manure or 400-450 kg of commercial organic fertilizer, 5-6 kg of urea, 13-17 kg of diammonium phosphate and 7-9 kg of potassium sulfate.

Top dressing: 9-10 kg of urea per mu, 5-6 kg of potassium sulfate in the expansion period of the pepper, 5-12 kg of urea and 7-8 kg of potassium sulfate in the period of swelling of the pepper; -10 kg, potassium sulfate 5-6 kg.

Top dressing: When calcium deficiency, magnesium deficiency or boron deficiency occurs, foliar application of 0.3% calcium chloride, 1% magnesium sulfate or 0.1-0.2% borax aqueous solution 2-3 times. Facility cultivation can increase carbon dioxide gas fertilizer.

share to: