Special fertilizer for common head cabbage, and preparation method thereof

Abstract

The invention discloses a special fertilizer for common head cabbage, and a preparation method thereof. The special fertilizer for common head cabbage adopts nitrogen-phosphorus-potassium, medium and trace elements and associated substances as raw materials, and solves the problems of blind excess application of a nitrogen fertilizer, insufficient fertilization amount of a potassium fertilizer, emphasizing of macro-elements and neglecting of medium elements, unreasonable period and mode of fertilization, and rich fertilizer waste caused by excess irrigation in common head cabbage production. The special fertilizer prepared in the invention has advantages of high content of nutrients, long fertilizer efficiency, balanced nutrients, and reduction of the chemical fertilizer applying amount in the common head cabbage cultivation process through only one-shot application of a base fertilizer in the whole growing stage without after manuring. The special fertilizer promotes compact heart, smooth and regular spherical shape and natural and rich taste of the common head cabbage, enhances the disease and pest resistance of the common head cabbage, and substantially improves the output and the quality of the common head cabbage.

Description

technical field [0001] The invention relates to a special fertilizer for cabbage and a production method thereof. Background technique [0002] Cabbage vegetables have different requirements for various nutrients at different growth stages. Nitrogen was consumed in the early stage, the rosette stage of cabbage had the highest nitrogen requirement, and the leaf bulb formation stage consumed more phosphorus and potassium. The ratio of nitrogen, phosphorus and potassium absorbed by head cabbage throughout the growth period is 3:1:4. Cabbage likes nitrate nitrogen fertilizer. It grows best when nitrate nitrogen accounts for 90% and ammonium nitrogen accounts for 10%. For each ton of fresh vegetables, it needs to absorb nitrogen (^^) 3.5-5.0 kg, phosphorus (&05) 0.7- 1.4 kg, potassium (heart ()) 3.8-5.6 kg. Cabbage contains more calcium, and the tip or edge of the young leaves near the growth point with insufficient calcium will wither and turn brown, or there will be symptoms...