Recently, due to the low temperature period, the growth rate of rapeseed is slow, and the growth is worse than normal. In order to maximize the productivity of limited fertilizers, it is necessary to clarify the fertilizer characteristics of rapeseed and pay attention to topdressing techniques.
Chasing after, chasing early, in time. Since phosphorus can be reused in rapeseed, the earlier the fertilization, the earlier the absorption and the greater the efficiency. Therefore, rapeseed must be applied with sufficient phosphate fertilizer before the 5 true leaves of the seedlings. The flowering period is the maximum efficiency period of rapeseed nutrition, and the amount of fertilizer required is the largest in the whole life. Therefore, it is necessary to topdress in time from convulsion to flowering.
Smooth fertilization, and do a good job. In order to attack the autumn hair and winter strong, before the 5 pieces of true leaves, 5 kg of urea seedlings should be chased per acre, and 20~25 kg of phosphate fertilizer should be applied. In order to improve fertilizer efficiency, nitrogen and phosphorus should be mixed and ditched. When rapeseed flower buds are differentiated, it is necessary to chase the fertilization. At this time, the main effect is to use the quick-acting nitrogen fertilizer. The per mu of cultivating manure is about 700 kg of manure, or 5 to 7 kg of urea, and the stalking period is 7.5 to 10 kg per mu. Diammonium phosphate 2.5~5 kg, or ternary compound fertilizer 15~20 kg. In order to prevent premature aging, it is necessary to chase urea 3 to 5 kg later. In order to accelerate the conversion of nutrients, each time after topdressing, you can also spray Huimanfeng or Zhuangfuxing active liquid fertilizer at a concentration of 1:500.
Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
Peptide Powder,Collagen Powder,High Purity Ipamorelin,Bodybuilding Gdf-8 Myostatin Powder
Shaanxi YXchuang Biotechnology Co., Ltd , https://www.peptidenootropics.com