Trends and Prevention of Flower Diseases and Insect Pests in September

According to the current situation of crop pests and diseases, combined with the regional distribution of species and climate and other factors, it is expected that the occurrence of flower pests and diseases in September is moderate, partial emphasis, the main pests and diseases are leaf spot, anthrax, spider mites, scale insects, spot Flies and thrips.

First, the trend of flower pests and diseases

Leaf spot disease: It is expected that the disease will occur in moderate and local conditions, mainly causing damage to the oceanic impatiens and a bunch of red flowers.

Anthracnose: It is expected that the disease will occur in a moderate degree, and it will mainly harm the flowers such as green radish and Anthurium;

Red spider: It is expected that the disease will be moderate and local, and it will mainly harm the potted orange;

Scale insects: It is expected that the occurrence of moderate, partial emphasis, the main harm rich bamboo, etc.;

Liriomyza sativae: It is expected that it will occur in mid-range and it will cause major damage to the shade-flowering daisy.

Hummer: It is expected that the disease will be moderate and local, and it will mainly damage freshly cut chrysanthemums and lemons.

Second, based on

1, weather conditions

In August, the average temperature was slightly higher and the precipitation was less, but affected by tropical cyclones, there were heavy rains and partial rainstorms, which facilitated the occurrence of disease and thermophilic pests. Affected by cold air in September, precipitation was less than in previous years, and the average temperature was close to normal.

2, the source of pests and insects

According to the current survey of flower production bases, the average diseased leaf rate of leaf spot disease was 22.3%; the average diseased leaf rate of anthracnose was 17.6%; the insect population of red spiders was 223; the insecticide of scale insects was 73 The average hazard rate of Liriomyza is 18.6%; the number of hundred strains of Hummer is 164.

3, varieties and cultivation conditions

Too dense planting, excessive watering, poor ventilation, high temperature in the shelter, and lack of ventilation are the hotbeds for the occurrence of shade plant diseases. The number of rainy days in the previous stage is more, affecting the pest control effect of farmers, resulting in a larger base of insects.

Third, flower pest control methods

1. Control of leaf spot: 25% of Myclobutanil EC can be used, 10% difenoconazole water dispersible granules (Shigao) 1500 times, Fuxing 5,000 times, 70% thiophanate-methyl WP 600 times, 80% mancozeb WP 600 times, 50% carbendazim WP 800 times spray.

2, control anthrax: can use 50% of the United States and the United States WP 500 times, 80% blessing • zinc WP 800 times, 75% WP chlorophyll 600 times, 57.6% copper hydroxide dry The granules (Crest bacteria clear) were sprayed on the leaves 1000 times, sprayed 5 to 7 days, and sprayed 2 to 3 times.

3, control of spider mites: 500 g / l bromodecyl ester emulsifiable concentrate 1500-2000 times, 73% propargyst emulsifiable concentrate 2000-3000 times spray.

4, control of scale insects: 40% can be used & # 8226; oil emulsion 1000 times, Le Si, 25% buprofezin WP 1000 ~ 2000 times spray.

5, Liriomyza control: can use 1000 times of green vegetable treasure, 1.8% of avermectin EC 1200 to 1500 times liquid spray.

6. Control of Thrips: Use 2.5% high-permeation imidacloprid WP 1000 times, 25 g/l deltamethrin EC 1500-2000 times, 40% Dimethoate 800 times, 25% quizoprios EC 1000 times .

Intestinal localization was administered to reduce adverse effects.

Targeted site-specific release:

Two hours in gastric juice will not disintegrate or crack, dissolve within thirty minutes of disintegrating juice, providing a perfect solution for protein and peptide drugs and probiotics.

Enteric coated gelatin hollow capsule is made of gelatin and enteric coating material in gastric juice it will not collapse, but will release in the intestines as a collapse of a target product . It is often used for special packaging of drugs and health cae products which are irritating to the stomach or unstable under acid, or dissolved and effected in the intestine.

Intestinal location administration can improve the efficacy of drugs, reduce the dose and the adverse reaction, brings the convenience to patients. Moreover , it can avoid the degradation of gral protein, polypeptide or health care products and provide the best absorption sites for them.