Recently, when reporters interviewed Lijiabang Shui Village on Luocheng Street in Shouguang City, Master Li had encountered an upset: Overwintering and cucumber cultivation at the end of October had not yet been picked. The symptoms of premature aging and yellowing of leaves appeared on the trees. The plants grow weaker. Master Li pulled out a tree to see a large number of mantle in the soil, bite cucumber roots, seriously affecting the normal growth of cucumber.
When I heard Master Li's complaint, the reporter squatted down to observe carefully. Indeed, there was a large amount of mantle in the soil, and there were many kinds of adult moths gathering in the front face of the greenhouse. Through exchanges with Master Li, the reporter learned that the main reasons for the increase in sheds in the shed are the following two points:
First of all, when the vegetable grower trades in the winter, most of the pesticides used are not decomposed chicken manure and duck manure. The adult mantis of the mantle has a strong tendency toward unfamed manure, and the adult eggs produce on these manure, causing The great occurrence of the mantle, the growing harm to vegetables.
Secondly, during the winter rushing, in order to avoid chemical fertilizers causing rooting, many vegetable farmers ferment the ground soybeans, cornmeal, etc. in a fermentation tank within the shed for 5-7 days and then apply it to the shed with water. However, because of the low temperature, soybeans and cornmeal are not fermented thoroughly, and they have also created opportunities for infection by mantle locusts.
For the application of uncooked manure in the greenhouse, the mantle control should be as early as possible. Dichlorvos may be used to smoke adult insects before colonization, or 1.8% of avermectin may be mixed 1500 times with 75% of ciprofloxacin powder 5000 times to kill adult insects in the shed to prevent their oviposition. For the mantle that has already occurred, it is necessary to carry out the irrigating treatment, and it is possible to use retort I or 1.8% avermectin, 75% ciprofloxacin WP and so on. At the same time, vegetable farmers should also use high rates of fertigation agents to promote the complete decomposition of manure, to avoid adult spawning and to reduce the damage of mantle.