Determined according to the growth, in the case of adequate bottom fertilizer, the first 30 days of fertilizer once, 7-10 days of fertilizer once in the balling period.

Cauliflower fertilization technology

A, seedling fertilization:

Cauliflower seedling transplantation method of planting, seedling growth of nutrients required from the addition of organic fertilizer and a small amount of fast-acting fertilizers in the seedbed soil and seedling nutrient soil. Nutrient soil formula: clean garden soil 70%, organic fertilizer (well rotted and sifted) 30% calcium superphosphate, 2-4 kg / square, compound fertilizer 2 kg / square. According to this formula, the nutrients in the nutrient soil is enough to meet the needs of seedling growth, do not need another fertilizer.

Two, planting fertilizer:

Before planting, pay attention to the determination of soil N, P, K, B, Mo nutrient content (acidic soil can not measure Mo), based on the results of the arrangement of the bottom fertilizer and regular fertilizer application program. Generally need to apply organic fertilizer 3500 kg/mu, urea 5-20 kg/mu, potassium sulfate 5-15 kg/mu, calcium superphosphate 0-30 kg/mu. Chemical fertilizers and organic fertilizers are fully mixed in the turning of the ground when applied.

Three, fertilizer:

1, rosette fertilizer: cauliflower seedling growth into the rosette period, in the application of sufficient low fertilizer on the basis of a small amount of fast-acting, fully water-soluble Liheng water-soluble fertilizer, 5kg per mu can be.

2, the first ball fertilizer: flower ball diameter increased to 3cm or so, chase the first ball fertilizer: ammonium sulfate 10-25kg/mu, potassium sulfate 5kg/mu, combined with watering.

3, the second ball fertilizer: in the middle of the ball, mu Shi Li Heng water-soluble fertilizer 5kg high nitrogen type.

4, the third nodulation fertilizer: generally early, medium maturity varieties do not need the third fertilizer, late maturity varieties chase 3 times the fertilizer is good, the amount of the same as the second.

Fourth, micronutrient application:

Especially focus on boron, molybdenum fertilizer application, in the soil effective boron is less than 0.8ppm, effective molybdenum is less than 0.2% should be supplemented by foliar spraying. Respectively, 0.2% borax solution, 0.05% ammonium molybdate solution in the growth period, every other week spray, 3 times in a row. If the soil deficiency is particularly serious, it should be sprayed every 3-4 days, 5 times in a row.