The main thing is to want to be in the turnip cabbage to kill, the turnip cabbage is the most easy to produce insect spray pesticide more and not good to say that the marsh water can kill insects, which know how to spray? Last year, I burned all the cabbages
A lizard in slurry spraying 36 hours after black death and fall off, killing rate of 95.5%; aphids in slurry spraying after 28 hours of activity ability is abate, almost stopped after 30 hours, 40 hours, 50 deaths, killing rate of 94.7%. Some other pests were killed 3 hours after spraying biogas slurry, and the rate was up to 99.8%. In short, the insecticidal efficiency of chemical pesticides increased by about 5%, reduce the cost of drug use by 95%. Biogas slurry on the effectiveness of sterilization, can also be called bio pesticides.
Therefore, it has a dual role in promoting crop growth and controlling pests and diseases. A large number of scientific experiments and production practice show that as long as the correct use of the method, biogas slurry has a very good insecticidal sterilization. In the study, the use of biogas slurry spraying fruit trees and vegetables are both insecticidal sterilization, and more than 94% of the foliar fertilization. After observation, red and yellow spiders after spraying biogas slurry 4 - 5 hours lost activity, the death rate of up to 7 hours, killing rate of up to 55.5%
Biogas slurry is a kind of liquid residue which is produced by the organic matter. It contains not only the crop growth of nitrogen, phosphorus, potassium, trace elements, amino acids and other nutrients, but also contains butyric acid, indole acetic acid, vitamin B12, etc.
