What are the correct methods for pesticide irrigation?
Pesticide root irrigation follows two principles:
The concentration of root-filling agent is small, but it is easy to injure the roots if the concentration is high. Therefore, it should be changed according to the actual situation to achieve the ideal effect of disease prevention. For example, the root of vegetable seedling stage is small, the root is tender, and the resistance ability is poor. Winter medication, the concentration should also change, the concentration should be slightly higher, so that the ideal control effect.
Change in liquid dosage:
In the production, many vegetable farmers, no matter seedling or adult plants, as long as the infusion is per plant by half a jin of liquid. This is clearly not the right thing to do. For young seedlings, half a jin of liquid medicine is a little wasteful, two two sufficient; However, for the mature plants, half a jin of liquid is not enough, at best, only infiltrating the main root of the plant. As for the capillary root deep in the soil, half a jin of liquid will not infiltrate to that depth at all, so it is impossible to infiltrate into the capillary root. Compared with the main root system of vegetables, the hairy root is more susceptible to infection by bacteria, and the disease will be more likely to occur in the absence of protective agents. Therefore, adult plant irrigation root prevent disease,
Three application techniques were adopted for pesticide irrigation root, and the dosage proportion was reasonable:
Before using the medicine, the total amount of medicine for all plants should be calculated according to the amount of medicine used for each plant, and then the medicine should be diluted into appropriate concentration by adding water to the medicine. Next, the prepared medicine solution should be used for root irrigation. Note that the dosage and the proportion of water must be calculated accurately, do not estimate, in order to avoid the poor effect after irrigation or the occurrence of drugs. The fungicide should be mixed with jiamei as much as possible, and the concentration of the liquid should be no more than 1000 times of the liquid, so as to prevent the excessive concentration of the liquid in the soil around the root system of vegetables.
Give consideration to soil organisms:
Selective fungicides cannot destroy the biological community and ecological balance in soil after application. If already applied the shack of compost, do not want to use bactericide irrigation root prevents disease as far as possible, in case kill beneficial microorganism in compost, make compost loses effect. If a disease has occurred in vegetables, the root must be irrigated with an antimicrobial agent. Do not consider whether the beneficial microorganisms in the fertilizer will be damaged, so as not to cause a disease outbreak.
