Bitter water rose pest control technology in China

In recent years, the frequency and types of rose pests and diseases in bitter water in China have become more and more serious. In the past few years, powdery mildew occurred mildly in individual years. The main pests are locusts and red spiders. However, the frequent occurrence of gray mold disease in recent years has become a major new disease that seriously affects the output and quality of rose products, and should attract the attention of agricultural technicians and flower growers.

First, disease prevention

1, gray mold

After observation and investigation in 2009 and 2010, when the temperature changed greatly in early May, for 2-3 consecutive days of cloudy days or rainfall, the rose is prone to gray mold. Symptoms are as follows: brown tip appears on the edge or tip of the blade. Large spots quickly spread lesions on the edges of the leaves, leaving the edges of the leaves dry and yellow leaves falling off; buds with few buds and small buds, and severe years can lead to a 50% reduction in yield. Sites where gray molds have occurred are likely to occur in the coming year.

Prevention of gray mold is the most important measure is prevention: 1 each year in April, buds have not grown before spraying 2 times to prevent, can effectively prevent the occurrence of gray mold. The agent used was: 50% fast-acting 1200-fold solution or 50% pro-heine 1200-fold solution, which was sprayed every 7-10 days. Pay attention to spraying the lower part of the tree and the inside. 2 After the fall leaves fall every year, the whole tree is sprayed with lime sulfur, which is 3 to 5 degrees in Baume.

Prevention after the occurrence of gray mold: timely spraying, using 40% of pyrimethanil 800 times solution or 50% of niacinamide water dispersible granules 1200 times or the above-mentioned agents and carbendazim or chlorothalonil complexes, each Spray once in three days. In addition, the diseased leaves will be collected and buried in time to reduce the incidence of disease in the coming year.

2. Powdery mildew

The occurrence of powdery mildew is mostly a dry season from June to August. There will be erythema on the back of the leaves at the early stage of disease. The white powder on the edge of the leaf surface will produce white powder first. In severe cases, the white powder will cover the surface of the leaf. The use of chemical control: 30% fluconazole 3000 to 4000 times or 80% ethyl allicin EC 2100 to 4000 times or 12.5% ​​diniconazole 2000 to 3000 times, alternate spraying every 7 days. Applying potassium sulfate on foliar surfaces during the onset of disease can also play a role in disease prevention and treatment.

Second, pest control

1. Antimony prevention

Also known as the red spider, thistle is mainly harmful to the leaves on the bitter rose, and it is harvested after each year's buds. Often clustered on the back of a plant leaf. The individual is very small, not easy to be found, only the red dots are seen by the naked eye. Once it is found to be harmful, it is often heavier. The leaves lost chlorosis at the initial stage, and the lesions showed small yellow spots. Afterwards, they gradually expanded to the whole leaf and the leaf margins curled, resulting in scorching and shedding. Plants died severely. Red spiders are resistant to many acaricides, so many flower farmers find it hard to control them. In order to control the damage to the fleas, we must be preventive and integrated. The prevention and control of spider mites should be combined with biological control and chemical prevention to avoid excessive growth of drug resistance. Steps taken: 1 Remove withered plants, deciduous or weeds, in order to reduce the source of radon. 2 In early spring, lime sulfur was sprayed to prevent disease and insects. 3 spray buds after harvesting: pesticide selection should pay attention to the renewal and alternate use of pesticides, and at the same time pay attention to early prevention and treatment in the early occurrence of ticks. The commonly used pharmaceuticals include: 20% adipic acid (milk) EC 1500 and 2000 times, 20% Phlegm WP 2000-3000 times, 2.5% bintural (Uranus) EC 2000-3000 times, 1.8 % Abamectin (wormworm light) 1500 to 2000 times. Usually sprayed once every 7 days, the back of the main tree's lower leaves must be sprayed.

AHD Four in One CCTV Kit

What is the AHD Four in One CCTV Kit ? The AHD Four in One CCTV Kit/ AHD CCTV Kit/ AHD CCTV Kit HD/ AHD CCTV Kit Near Me/ AHD CCTV Kit Youtube/ AHD Kit AHD CCTV System is an importable part of the CCTV Kit, and this kind of CCTV Kit is also widly applied to the many fields.

So what about the advantages of the AHD Four in One CCTV Kit?
AHD Four in One CCTV Kit is the combination of the AHD Four in One Cameras and the Digital Video Recorder. Let me introduce you the 2 parts respectively.

The AHD Four in One Camera, also called the Analog High Definition Camera, one type of the analog camera, contains 4 video formats, and they are AHD,TVI,CVI,and CVBS respectively. The AHD Four in One Camera can transmit the ultra-long distant (500 meters) high-definition analog signal(resolution above 720P is High Definition, also called the HD ) via the ordinary video cable or the 75-5 coaxial cable.The AHD Four in One Camera adopts the advanced Y/C signal separation and analog filtering technology, which can effectively reduce color noise in the high-frequency area and improve the image restoration. Besides, compared with the traditional analog high-definition camera, the image resolution of the AHD Four in One Camera has a great improvement and the highest definition can reach up to the equal level to the network HD 1080P.

The Digital Video Recorder, also called the DVR, is the video storage device(a computer system for image storage and processing) via the hard disk recording. The Digital Video Recorder has the functions of long-term image recording, voice recording, remote monitoring and control of images/voices. In terms of the image processing, image storage, retrieval, backup, network transmission, and remote control, the Digital Video Recorder is the far superior to the analog monitoring equipment because of the adoption of the digital recording technology.

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