Pollution-free control techniques of diseases, insect pests and weeds in planting jujube

To fully implement the plant protection policy of "giving priority to prevention and comprehensive control", we should, on the basis of improving the ecological environment of orchards and strengthening cultivation management, give priority to agricultural and ecological control measures, pay attention to the protection and utilization of natural enemies, and give full play to the natural control role of natural enemies. Select high-efficiency biological agents and low-toxic chemical pesticides, and pay attention to the rotation of drugs to improve the application technology. Minimize the amount of pesticides in order to reduce pollution and residues, control diseases and insect pests below the economic threshold, and ensure that the quality of jujube fruit meets the national standards. In short, we should take agricultural and physical control as the basis, biological control as the core, and scientifically use chemical control technology to effectively control diseases and insect pests in accordance with the occurrence law and economic threshold of diseases and insect pests.

1. Agricultural control measures are taken to cut off the branches of diseases and insect pests, remove dead branches and leaves, scrape off the warped and cracked bark of tree trunks, turn over tree plates, cover the ground with straw, and apply fertilizer scientifically to control the occurrence of diseases and insect pests.

two。 According to the biological characteristics of pests, physical control methods such as sugar and vinegar solution, trunk wrapped grass rope, vibrating frequency insecticidal lamp and black light were used to trap and kill pests.

3. Biological control of artificial release of Trichogramma, protection of ladybugs, lacewings, predatory mites and other natural enemies, soil application of Beauveria bassiana to control peach heart borer, jujube inchworm, jujube armyworm, etc., using insect sex hormones to trap or interfere with adult mating.

4. Chemical control

(1) according to the biological and harmful characteristics of the control object, the principle of drug use allows the use of biogenic pesticides, mineral pesticides and low-toxic organic synthetic pesticides, limited use of toxic pesticides, and forbids the use of highly toxic, highly toxic and high residual pesticides.

(2) Scientific and rational use of pesticides to strengthen the prediction of diseases and insect pests, to achieve targeted timely use of drugs, do not use drugs when they do not reach the control target or when the proportion of beneficial insects and pests is reasonable.

Pesticides shall be used in strict accordance with the prescribed types, concentrations, times and intervals of use, and pesticides that have not been approved and registered shall not be used.

According to the occurrence characteristics of natural enemies, the types, application time and methods of pesticides were reasonably selected to protect the natural enemies. Attention should be paid to the alternating and rational mixed use of pesticides with different mechanisms in order to delay the resistance of bacteria and pests and improve the control effect.

Adhere to the correct use of pesticides, and strive to be uniform and thoughtful.