Scientific prevention and control, improve citrus quality

Scientific prevention and control, improve citrus quality

May is an important period for the occurrence and prevention of citrus pests and diseases, and scientific prevention and control should be strengthened to ensure the safety of citrus production, enhance the quality of fruits, and win market share.

First, the degree of occurrence

According to the investigation and analysis, this year, citrus red spiders have occurred in grade 4 in spring, grade 3 in citrus anthrax, grade 3-4 in scab, and grades 2-3 in broad-winged wax moth, and grade 3-4 in hilly orchards. Leaf A, Thrips 2-3, Citrus acuminatum 3, Local 4th.

Second, the main basis

On May 10th investigation, the number of orange spider mites was 123, and the number of larvae in the clear garden was 786, which was the period of the beginning of the Chengruo era. The adult of the citrus mealworms began to appear on April 6th, compared with last year. As early as 4 days, the adult peak period from April 25 to May 3, { {wide-winged larvae hundred twigs 46 heads, leaf A class of hundred worms, citrus anthracnose average disease rate of 23.7%. According to the weather forecast, abundant rainfall in May and more rainy days than last year are conducive to the prevalence of citrus diseases. As the temperature changes drastically, the duration of insect development is relatively prolonged, which is not conducive to prevention and control.

Third, the main measures

1. Each citrus farmer friend, with the implementation of the National Food Safety Law, pesticide residue testing for agricultural products is gradually established and established in various regions. May is a critical period for the prevention and control of citrus pests. Chemical prevention and control must be based on fruit. Starting from safety, at the same time, implement comprehensive prevention and control to ensure the appearance of the fruit and enhance the citrus brand.

2, fully open the orchard frequency vibration type insecticidal lamp, so that unified contiguous, trapping adult worms.

3. Give full play to the role of cooperatives (associations) and carry out professional and unified defense.

4. Implement inter-row grass cultivation, especially the "dense change and thinning" garden, seize the opportunity to artificially grow grass, improve the ecological conditions of orchards, release predatory mites, and reduce the investment in chemical pesticides.

5, control time: May 22-28; June 15-20.

6, the main agent: citrus spider mites: 1.8% Abamectin 3000 times, can be mixed with 250 times mineral oil. Citrus aurantium and citrus mealworms were predominantly 40% profenofos or 25% buprofezin, with no maximum use of methicillin. Citrus disease can be killed by 1500 times or 75% Montsson 1000-1500 times, and triazole fungicides. In the application process, the use of secondary dilution method, reasonable mixing, safe medication. (Source: Dangyang Special Product Center) (Dangyang Agricultural 110 Zhu Liqing)