Method for preventing and controlling aphid with Menochilus sexmaculata

Abstract

The invention discloses a method for preventing and controlling aphid with Menochilus sexmaculata comprising following steps: cultivating wheat seedlings, using the wheat seedlings as the host plants of corn leaf aphid for expanding propagation; inoculating second-stage larva of Menochilus sexmaculata to the wheat seedlings; the corn leaf aphid is used as breeding food for the Menochilus sexmaculata; a combination of wheat seedlings-corn leaf aphid- Menochilus sexmaculata is placed among rows of greenhouse crop seedlings, wherein the crops are not target crops of core leaf aphid; through the management of corn leaf aphid and Menochilus sexmaculata in the late stage, the Menochilus sexmaculata population is established in the crop system so as to continuously control aphid during the whole growing period of the crops. The advantages of the invention are: through introducing host plant-insects-natural enemy to a system in advance, before the occurrence of crop pests, there is enough natural enemy in the system, which can well control the harm on the crops by pest; at the same time, the adaptation of Menochilus sexmaculata to the greenhouse climate is increased; the control rate of crop aphid is about 86%.

Description

technical field [0001] The invention belongs to the field of pest control, and in particular relates to a method for controlling aphids by utilizing the ladybug six-spotted. Background technique [0002] In order to pursue crop yields in agricultural production, a large amount of chemical fertilizers and chemical pesticides have been invested, which has led to the deterioration of the ecological environment and increased the severity of food safety. In recent years, people have begun to turn their attention to green and organic food, nutritious, healthy and delicious agricultural products From high-quality growing environment and high-level maintenance technology. [0003] In southern China, spring and autumn are the seasons with the largest occurrence of aphids. Aphids can easily enter the greenhouse through insect-proof nets, but natural enemies such as ladybugs and lacewings are kept out of the greenhouse. Failure to prevent and control in time often leads to outbreaks of...

AI Technical Summary

Problems solved by technology

[0003] In southern China, spring and autumn are the seasons with the largest occurrence of aphids. Aphids can easily enter the greenhouse through insect-proof nets, but natural enemies such as ladybugs and lacewings are kept out of the greenhouse. Failure to prevent and control in time often leads to outbreaks of aphids. The reason is that currently commonly used botanical biopesticides are only contact-killing, but aphids like to hide in hidden leaf backs, which are not easy to spray when spraying, and the control effect is poor; yellow boards can only trap winged aphids, and the trapping amount is small, easy All kinds of natural enemies are trapped, but the specificity is not strong; the commercialized Heterochromia is widely used in the provinces and regions north of the Yangtze River, and it is not resistant to high temperatures. The amount of one-time adults or egg masses is large, and the cost is high. The population is difficult to establish and cannot achieve the effect of continuous control