Maintenance workers tie disposable plastic cups to the branches
Xiamen, April 25 ( This network reporter Liu Wei correspondent Zhang Yanyan) Recently, citizens walking on Xiamen Huandao Road can find that there are many palm plant branches tied with disposable plastic cups and plastic bowls, and there are also flying "unknown objects" inside. The reporter learned from the maintenance and greening personnel that these "unknown objects" were Ji Xiao Wasp and Ding Xiao Wasp, which had a great effect on the prevention and control of coconut heart leaf beetles in pests and diseases.
prevention and cure
Adult coconut leaf beetles are afraid of the sun, like to gather at the base of the youngest unexplored heart leaf activities, see the light and quickly crawl away, looking for a hidden place, specializing in eating the most tender leaf hearts of palm plants, after being eaten by it, the leaves it has eaten appear yellow after being damaged, which will lead to plant death when severe. In order to prevent and control coconut palm beetle, the direct highway department can be described as racking its brains. Previously, the directly subordinate highway department has carried out pest control on the entire line of green plants, that is, spraying pesticides, hanging medicine bags, etc. However, from April to May, it is the frequent occurrence of diseases and insect pests, and similar to the coconut heart leaf beetle these diseases and insect pests, the vitality is very tenacious, in order to further achieve the prevention and control effect, the direct highway department has recently shown a new trick - the use of the biological control technology of the bee and the wasp to deal with the coconut heart leaf beetle.
It is understood that The Ji wasp is known as the natural enemy of the coconut heart leaf beetle, the Ji little bee, the small bee tied to the plastic cup on the trunk, the ji small bee will fly to the big king coconut and other green plants, the eggs are laid on the body of the coconut heart leaf beetle larvae, they suck the nutrition in the coconut heart leaf beetle larvae gradually grow, after dozens of days, the coconut heart leaf beetle larvae will die; or the ji small bee directly will be the coconut heart leaf beetle body hollow, until then the coconut heart leaf beetle larvae die.
It is worth mentioning that Ji Xiao Bee and Zhi Xiao Bee will not attack humans, please rest assured that the general public and friends can rest assured. After killing the coconut palm leaf beetles, they will die due to lack of food sources and will not affect other plants.
Ji Little Bee
Smack little bees
Science
Ji Xiao wasp, with or without metallic luster, has a body length of about 2mm. Antennae 7-9 segments, male antennae are often fan-shaped. The distance between the tibia segments of the forefoot is thin and straight, and the tarsal segments of the foot are only 4 segments, so it is also called oligodic wasp. Some species parasitize the larvae of Diptera and Lepidoptera; In addition, there are some agricultural and forestry pests such as the thorny wasp and the gall wasp.
Psing wasp, a dominant parasitic wasp, high parasitic rate, strong fecundity, the American white moth and other lepidopteran pests "have a special love", can stab the egg layer into the American white moth and other pest pupae, and grow in the pupa, suck up all the nutrients in the parasitic pupa, known as the "forest guard" reputation.