The Internet of Things monitoring information platform is established to realize real-time data transmission, automatic analysis and all-round release of early warning information, improve the prevention and control of pests and meteorological disasters, and play a key role in the management of the dynamic process of crop field production (seedling monitoring, yield forecasting, etc.).

2. Technical methods of citrus green prevention and control

(1) Monitoring and early warning of pests and diseases

According to the characteristics and rules of occurrence of citrus diseases and pests, systematic monitoring of citrus diseases and pests should be carried out, the occurrence and development trends of diseases and pests should be timely and comprehensively grasped, and the monitoring and early warning information of diseases and pests should be accurately released to provide scientific basis for unified prevention and control.

Select a representative citrus orchard, install a multifunctional pest trap and report system and an intelligent pest identification and report system to monitor the occurrence of fly pests, citrus psyllid, citrus leaf moth, citrus yellow dragon disease and other diseases and pests. Combine the climate and farmland information of field microclimate and ecological remote monitoring, and grasp the citrus growth situation in real time. The occurrence of diseases and insect pests was predicted scientifically, which provided scientific basis for the green prevention and control of diseases and insect pests in citrus parks.

(2)Agricultural control

(1) Breeding and selecting disease-resistant varieties

(2). Strengthening fertilizer and water management

(3) Strengthening pruning and clearing gardens

(3)Physical control

(1) insecticidal lamp trapping

Using the phototaxis of pests, one insecticidal lamp was installed every 15-30 mu of citrus orchard to trap and kill the phototaxis of scarabers, fruit suckers, jade butterflies, leafhoppers, citrus star beetles and citrus leaf bugs.

(2) Color plate trapping

Biodegradable Armyworm plate (yellow plate/blue plate) was used to trap and kill citrus fruit fly, whitefly, whitefly, aphids, citrus psyllid, leaf miner moth, aracanth scale, flower bud maggot, thrips and other pests.

 (3) Pheromone trapping

The special attractants were used to induce and kill the insect pests such as orange fly, orange psyllid and leaf miner moth.

4. Biological control

(1) Ecological regulation

Through planting benign weeds in the orchard, scientific medicine and other measures, to protect the use of natural natural enemies such as bee, ladybug, chrysopleus, thrips, bug bug, mantis and so on, to create an environment conducive to natural enemies and crop growth but not conducive to the occurrence of diseases and insects.

(2) Biological control

According to "treating mites with mites", artificial release of predatory mites to control red spider and rusty spider; The method of "treating insects with bacteria, treating diseases with bacteria", using biological pesticides such as Bt and natural pyrethrin to prevent and control the occurrence of diseases and pests.

(3) Biological pesticides

Biological pesticides such as abamectin, neem, matrine, nicotinic acid and rotenone were scientifically selected according to the growth period of fruit trees and the occurrence of diseases and pests.

5. Scientific drug use

In the control of citrus crop pests and diseases, adhere to scientific drug use, choose high efficiency, low toxicity, low residue, environmental friendly pesticides. When the harm of diseases and insects is serious, comprehensive prevention and control should be made use of the advantages.