Fertilization technology of cauliflower

Cauliflower is an annual plant of Brassica in Cruciferae. It is a vegetable that feeds on flower bulbs and is a variety of cabbage along with broccoli and cabbage. Cauliflower is one of the favorite vegetables because of its rich nutrition and delicious flavor. it has a long growth period and a great demand for nutrients, so fertilization is the key point to obtain high yield when planting. So how to fertilize cauliflower? Let's take a look.

1. Characteristics of fertilizer requirement

According to the experimental study, for every 1000 kilograms of cauliflower, pure nitrogen 8-11 kg, phosphorus pentoxide 2-3 kg and potassium oxide 9-12 kg are consumed. Among them, the elements that it needs most are nitrogen and potassium. It has a greater demand for nitrogen fertilizer in the peak growing season, and more demand for phosphate fertilizer in the period of flower head formation. Before budding, to ensure the supply of phosphorus and potassium fertilizer, in addition to these three conventional fertilizers, it also has a certain demand for trace elements such as boron, magnesium, calcium, molybdenum and so on.

2. Apply sufficient base fertilizer

Before production, in order to meet the nutrient demand of cauliflower, we should not only choose loose and fertile soil with strong fertility, but also apply rotten farm fertilizer and N-P-K compound fertilizer as base fertilizer before planting. When applied combined with ploughing, it was evenly mixed with the soil. Generally, mature farm manure 2500-300kg, compound fertilizer 15-20kg and borax about 0.5kg were applied per mu to avoid element deficiency in the early stage of seedlings.

3. Reasonable topdressing

After applying sufficient basal fertilizer, cauliflower needs topdressing three times in the whole growth period, the first time in the rosette stage, when 10 kg of urea and 5 kg of potassium sulfate are applied per mu to promote the rapid differentiation of flower buds and buds; the second time in the early stage of the flower bulb, 15 kg of urea and 8 kg of potassium sulfate per mu can promote the rapid expansion of the flower bulb; the third time in the middle of the head, 10 kg of urea and 5 kg of potassium sulfate are applied per mu. After fertilization, we should pay attention to the supply of water and keep the soil moist, which can speed up the absorption of fertilizer by the plant and increase the yield.

4. Extra-root fertilization

Extra-root fertilization is an auxiliary measure for planting cauliflower, which can supplement the trace elements in the middle and later stage of the plant and avoid the symptom of element deficiency in the plant, which leads to the decline of yield and quality. According to the plant and soil conditions, such as boron deficiency in the soil, low concentration borax solution can be sprayed at the flowering stage, low concentration magnesium sulfate solution can be sprayed 1-2 times when magnesium deficiency, and low concentration ammonium molybdate solution can be sprayed when molybdenum deficiency. In a word, reasonable extra-root fertilization according to the needs of plant growth can prevent plant premature senescence and improve plant quality.

The above is the introduction of fertilization technology of cauliflower. I hope it can help you. If you want to know more about it, please follow us.