Cauliflower cauliflower, also known as cauliflower, is widely grown in China due to its rich nutrition and delicious flavor. Cauliflower is a cruciferous plant that is a variant of cabbage. The cauliflower is divided into three types: early, middle and late-maturing. The planting method adopts the method of first seeding, followed by transplanting. The growth cycle is long and the yield is high. It needs to absorb a considerable amount of nutrients for its growth and development. Because of its own special growth, it requires stricter living conditions than other cabbages, and it also has strict requirements for fertilizer. Only by satisfying its requirements for living conditions and nutrients, can it achieve higher yields and better quality. Quality.
Cauliflower fertilization, in particular, should pay attention to nitrogen, phosphorus, potassium, boron, molybdenum, five kinds of nutrients sufficient supply and balance ratio. The specific schemes are as follows: 1. Fertilization cauliflower at the seedling stage is planted by transplanting seedlings. The nutrients needed for seedling growth are derived from the organic fertilizer added to the nursery soil and the seedling nutrient soil and a small amount of quick-acting fertilizer. Nutritional soil formula: clean garden soil 70%, organic fertilizer (fully cooked and sieved) 30% superphosphate, 2-4 kg / square, compound fertilizer 2 kg / square. According to this recipe, the nutrients contained in the nutritious soil are sufficient to meet the growth needs of the seedling stage, and no additional fertilizer is required.
Second, the colonization of the base fertilizer before the determination of soil N, P, K, B, Mo nutrient content (acid soil can be measured out of Mo), based on the results of the arrangement of basic fertilizer and regular top dressing application program. Generally need to apply organic fertilizer 3500 kg / acre, urea 5-20 kg / acre, potassium sulfate 5-15 kg / acre, superphosphate 0-30 kg / acre. Fertilizers and organic fertilizers are well-mixed and applied to the ground.
Third, top dressing
1. During the period of rosette dressing: After cauliflower grows slowly, it enters the rosette stage, and on the basis of applying low-fertilizer, a small amount of fertilizer is applied: urea 10 kg/mu, potassium dihydrogen phosphate 5 kg/mu, and the amount of human feces and urine is poured.
2. For the first time, ball fertilizer: When the diameter of the flower ball is increased to about 3cm, the first ball fertilizer is chased: ammonium sulfate 10-25 kg/mu, potassium sulfate 5 kg/mu, combined with watering.
3, the second ball fertilizer: in the middle of the ball, Mushi urea 5-15 kg, pouring manure once.
4. The third ball-bearing fertilizer: Generally, early and middle-maturing varieties do not need to be top-dressed for the third time, and late-maturing varieties should be followed by 3 times of fertilizers, and the amount is the same as the second time.
Fourth, the application of trace elements with particular emphasis on boron, molybdenum fertilizer application, the effective boron in the soil is less than 0.8ppm, effective molybdenum is less than 0.2% should be added by foliar spray. 0.2% borax solution and 0.05% ammonium molybdate solution were used during the vigorous growth period and sprayed once every other week for 3 consecutive times. If the soil deficiency is particularly serious, it should be sprayed once every 3-4 days and sprayed 5 times continuously.
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