Strengthen the control of citrus pests and diseases
First, the degree of occurrence
The occurrence degree of citrus leaf leaf moth was grade 4, the level of physiological cracking disease was grade 2, and phage type anthrax was grade 3.
Second, the main basis
1. According to the survey, there were 19 shoots of a hundred shoots of leafminer, with a physiological cracking rate of 1.1% and anthrax leaf disease rate of 10.4%.
2. On a continuous rainy day, the soil has high humidity and is conducive to the emergence of leaf miners. After the drought, the large amount of rainfall is prone to physical cracking. In particular, in the early stages of the citrus grove and the outgoing citrus groves, timely management of water and fertilizer should be carried out to ensure normal fruit growth.
3, anthrax pathogenic base. This year, the incidence of anthracnose disease in citrus-producing areas reached 13.7%. It is the highest incidence in recent years, and the climate conditions are suitable, and it is also the case that å´ ? å€èª å€èª å€èª 也 胤 胤 胤 (5) é‡ é‡ é‡ é‡ é‡ / / / / / / / / / / / /
Third, the main measures
1. Drain the drains in time and use the time when the soil moisture in the garden is sufficient to seize the time and restore the inter-grass grasses.
2. Ensure the normal operation of the frequency-type insecticidal lamp in the citrus garden.
3. Timely replenish calcium and potassium-based multi-element foliar fertilizers and supplement photosynthesis regulators to increase the tree's resistance to stress.
4. Use 16000 units of Bacillus thuringiensis or bifenthrin to control leaf miners. Use fluorosiliconazole (DuPont Fuxing) 400 times to prevent phlegm-type anthrax. (Hubei Dangyang Agriculture 110 Zhu Liqing)