Medium fertility level, the target yield of 1 mu is 2000~2500 kg. The fertilization amount per mu of broccoli is 2500~3000 kg (commodity organic fertilizer 350-400 kg), nitrogen fertilizer (N) 20~23 kg, phosphate fertilizer (pentaphosphorus pentoxide) 6~8 kg, potassium fertilizer (potassium oxide) ) 11~14 kg. Nitrogen and potassium fertilizers were divided into base fertilizers and three times of topdressing application. The ratio of fertilization was 2:3:3:2, and all the phosphate fertilizers were used as base fertilizer.
The base fertilizer organic fertilizer is applied as a base fertilizer at one time, and 6 kg of urea per acre, 13-17 kg of diammonium phosphate, 7-8 kg of potassium sulfate, and 0.5 kg of borax.
During the dressing period, 10~11 kg of urea per acre and 5~6 kg of potassium sulfate are applied. The initial application of urea is 13~15 kg of urea and 6~8 kg of potassium sulfate. The flower ball forms a medium-term urea application of 10~11 kg and potassium sulfate. 5~6 kg.
The external top dressing and boron deficiency can spray 0.1% to 0.2% borax solution in the initial and middle leaves of the flower ball formation; the magnesium deficiency can be sprayed on the foliar surface by 0.2% to 0.4% magnesium sulfate solution 1~ 2 times.
Gate Guide Wheel ,Rubber Guide Rollers For Slide Gates,Guide Rollers For Sliding Gates,Nylon Rollers For Sliding Gates
Jiaxing Gates Hardware Products Co.,Ltd , https://www.888gates.com