The nutrient seedlings of the nursery bed seedlings are matured with human fecal urine and decomposed organic fertilizers. The compound fertilizer is applied in an appropriate amount. Usually, a 10-millimeter seedbed is applied with 0.5-0.7 kg of compound fertilizer containing 45% of nitrogen, phosphorus and potassium. Do not use it. Urea is the base fertilizer for the seedbed. One of the basal fertilizers for cotton field is to increase various types of organic fertilizers or bio-organic compound fertilizers; the second is to make formula fertilization and balanced fertilization; nitrogen, phosphorus and potassium are formulated according to the ratio of 3:1:3; and the third is insect-resistant cotton. To increase potassium fertilizer, base fertilizer per acre of not less than 15 kg, and apply 0.5 to 0.7 kg of zinc fertilizer, holding 0.4 kg of boron; four is the amount of fertilization, should not blindly pursue the number of high content of ternary compound fertilizer per acre 25 to 30 kilograms can be; five is to change the spread of fertilization material for the ditch strip application or acupuncture points, cotton seedling roots and fertilizers to maintain a certain distance.
a chemical substance derivable from a mold or bacterium that can kill microorganisms and cure bacterial infections.
Antibiotics refer to a class of secondary metabolites produced by microorganisms (including bacteria, fungi, actinomycetes) or higher animals and plants in the process of life, which can interfere with the development of other living cells. Clinical commonly used antibiotics include extracts from microbial culture medium and compounds synthesized or semi synthesized by chemical methods. Animal use antibiotic,Veterinary antibiotics,Antibacterials for animals Shandong Unovet Pharmaceutical Co.,Ltd. , https://www.unovetcn.com
The antibacterial or bactericidal effects of antibiotics and other antimicrobial agents are mainly aimed at the mechanism of "bacteria exist but human (or other animals and plants) do not", including four major mechanisms: inhibition of bacterial cell wall synthesis, enhancement of bacterial cell membrane permeability, interference with bacterial protein synthesis and inhibition of bacterial nucleic acid replication and transcription.