It is commonly known as agaric, and it attracts many farmers to grow because of its high nutritional value. Snake eye disease is the most important disease in the production process of the sunflower. It seriously affects the edible value and commodity value of the sunflower, and reduces the economic benefits of the vegetable farmers. Timely pesticide control to reduce losses.
The sunflower eye disease, also known as fisheye disease and purple spot disease, is only harmful to the sunflower. It is only harmful to the leaves on the sunflower, and can occur in both the seedling stage and the adult stage, especially in the middle and late stages. In the early stage of the disease, the lesions are purple spots, or purple purple edges, middle grayish brown spots, the lesions are nearly round, and the margins are semicircular; in the middle and late stages of the disease, the lesions gradually enlarge, the edges are purple-brown, and the purple-brown side is more Wide, the central part of the lesion is grayish white, slightly concave, thin, some easy to perforate, the boundary of the disease is obvious, the lesion diameter is 1~6 mm.
The disease is caused by the genus Aspergillus spp., which is caused by the mycelium and conidia in the northern part of the country with the diseased body overwintering in the soil, or overwintering on the seed, producing conidia in the next year, with the help of rainwater and airflow. The spread is harmful; there is no wintering phenomenon in the southern region, which can be turned into an annual anniversary. Seeds are the main route of disease transmission over long distances. Humidity is the main condition for the spread and spread of the disease. It is heavy in the rainy season or year; the soil is poor, the plant growth is weak, the nitrogen fertilizer is applied, the terrain is low, and so on. It is easy to induce the disease;
The following comprehensive technical measures should be taken to prevent and treat the snake eye disease:
First, agricultural control.
1. Clean the pastoral, remove the sick body in time and remove the diseased leaves and burn them intensively to reduce the source of infection.
2. Apply decomposed organic fertilizer, rationally apply N, P, K fertilizer to avoid partial application of nitrogen fertilizer.
3. Reasonable rotation, rotation with onion and garlic to avoid continuous cropping.
4. Reasonable close planting, timely drainage, reducing field humidity.
Second, spraying foliar fertilizer at the seedling stage to improve the disease resistance of plants. In the seedling stage, it can spray 1500 times of Shileili 2000 liquid fertilizer or 3000 times of compound growth factor, which promotes early growth and improves disease resistance.
Third, chemical control.
In the early stage of the disease, China Pesticide Network recommends using 75% Dakoning WP600~800 times, 50% Kuiling WP2000 times, 2% agricultural resistance 120AS200 times, 80% Shandesheng WP600 times, 75% Dakoning WP1000 times+ 70% methyl thiophanate WP 1000 times, 20% Shi Baoling SC800 ~ 1000 times. Once every 7~10 days, use 2~3 times.
Sealand is a trustworthy manufacturer of Coriolis mass flow meter, Coriolis mass flowmeter, Coriolis meter, Coriolis flow meter and Coriolis flowmeter, ATEX, CE & IECEx approved.
The flow meter size covers from DN03 to DN150, and bigger models are being developed. The main specification is as follows.
Model No.
Diameter
(mm)
Max. flow rate
(kg/min)
MWP.
(MPa)
Accuracy grade
(%)
Zero stability
(kg/h)
CG-03
03
6
4
0.1/ 0.2/ 0.5
0.012
CG-06
06
18
4
0.1/ 0.2/ 0.5
0.04
CG-15
15
50
25
0.1/ 0.2/ 0.5
0.12
CNG-20
20
120
25
0.1/ 0.2/ 0.5
0.36
CG-25
25
200
4
0.1/ 0.2/ 0.5
0.62
CG-40
40
500
4
0.1/ 0.2/ 0.5
1.60
CG-50
50
1000
4
0.1/ 0.2/ 0.5
2.38
CG-80
80
3000
4
0.1/ 0.2/ 0.5
7.05
CG-100
100
3600
4
0.1/ 0.2/ 0.5
12.00
CG-150
150
8000
4
0.1/ 0.2/ 0.5
50.00
Coriolis Mass Flow Meter, Coriolis Mass Flowmeter, Coriolis Meter, Coriolis Flow Meter, Coriolis Flowmeter
Zhejiang Sealand Technology Co., Ltd. , https://www.sealandflowmeter.com