For flower producers, summer is undoubtedly a headache season, because summer flowers and plants are affected by pests and diseases and cannot grow normally. Then, how to control the spread of disease in the production process, does not affect the commodity value of flowers and plants? Today, Xiaobian uses the production process as a clue to share with you the main points of pesticide control:
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In the process of prevention and control, we must adhere to the principle of “prevention, prevention and control†and focus on prevention from the following aspects.
The first is to prepare the site thoroughly before the start of production, the entire site must be thoroughly disinfected, and then treated with spectral fungicide. In addition, it is necessary to do drainage measures and prepare emergency drainage equipment, because if the site is flooded, the loss will be incalculable.
The second is to prepare the medium for hot and rainy summer. The medium used must be loose, permeable and permeable. It can be drained in time on rainy days to avoid physiological diseases caused by accumulated water. In addition, the prepared medium should be disinfected, and a broad-spectrum fungicide can be used.
There are several important plant pathogens for the disinfectant medium. Pythium, Phytophthora and Rhizoctonia are representative members. The conditions are appropriate, these pathogens will actively infect the roots of the host plants (the sclerotium usually infects the base of the stem), causing harm, if not improved, it will cause the plants to wilted, die, and cause economic losses.
The problem that must be paid attention to during the planting process is to newly seed the seedlings. Firstly, the quality and water condition of the seedlings should be checked, and the seedlings should be placed in the transitional site for one or two days of adaptive refining and then on the basin. The new seedlings should be watered in time, but it should not be too much. It is best to keep the medium moist and not to accumulate water. Because the seedlings of the new upper pot are relatively weak before the root system erupts, the bactericide rooting treatment can be carried out according to the situation to reduce the incidence rate.
In the production process, in addition to the regular use of drugs (the same active ingredient of the drug should not be used more than 3 times, need to be used interchangeably with other drugs), in addition to some special weather conditions, take appropriate measures.
Continuous cloudy and hot and humid weather is very conducive to the propagation of pathogens and the spread of disease. Therefore, in the summer, it is recommended to spray the fungicide for 2 days to 3 days to prevent and control the growth of pathogens and reduce the disease. spread.
The prevention and control of diseases should be prepared before and after the rain, and measures should be taken to minimize the damage.
First, prepare before the rain. Clean the drainage ditches around the production site to prevent water from clogging and causing waterlogging disasters. For the production site of tarpaulin, pull down the tarpaulin before it rains; if the terrain is low, it should be equipped with corresponding drainage equipment. , timely discharge of water.
The second is the measures after the rain. In order to remove accumulated water in time after rain, it is necessary to rinse the leaves with clean water in time to prevent harmful substances in the rainwater from causing damage to the blades. After the leaves are dried, spray a broad-spectrum fungicide such as chlorothalonil or carbendazim to prevent it. For flowers such as petunia, four seasons sea bream, African phoenix, etc., which are prone to root rot or stem rot, the pesticide manufacturer recommends that the sulphur dilute sodium 600 to 800 times solution will be very significant when the conditions permit. Effect.
Root rot is the main disease of flowers and plants, and timely prevention and control measures should be taken to avoid economic losses.
The pathogens causing root rot are mainly Pythium, Phytophthora, Rhizoctonia, Root Black rot, etc. These bacteria can infect the roots of the plants and cause the roots to rot. When 10% of the roots rot, the ground can still show a healthy state, and if the environmental conditions are not improved, the decay will further expand; when the decayed root reaches 20% to 30%, the shoot begins to show Symptoms, such as chlorosis (similar to deficiency), defoliation or leaf necrosis; when the infection spreads to the top of the plant, the plant will die very quickly.
To prevent root rot, we must start from the following two points:
The first is to avoid excessive humidity of the substrate, maintain a good drainage environment of the substrate, and disinfect the medium and the cultivation environment.
The second is to carry out chemical control. Yongning or anti-virus cockroach (fosfoss + mancozeb) 600 times to 800 times liquid spray, 1000 times liquid irrigation; speed Zhining (metalaxyl + mancozeb) 600 times to 800 times liquid spray, 800 Up to 1000 times liquid irrigation root; Minjia (ethyl phosphine aluminum) 600 times liquid spray, 200 times to 500 times liquid irrigation; Pluc (CW) 800 times to 1000 times liquid spray, 1000 times liquid irrigation.
The above pesticide formula has protective and therapeutic effects and can be used before or during the onset of the disease. The Chinese pesticide network recommends regular use from 7 days to 10 days, and the rooting effect is better.
* Plate FLANGE (Plate Flange, Flat Flange, Plain Flange)
* SLIP ON FLANGE (SORF SOFF FLANGE)
* WELDING NECK FLANGE (WNRF FLANGE)
* BLANK FLANGE (BLIND FLANGE, BLFF FLANGE, BLRF FLANGE)
* THREADED FLANGE (SCREWED FLANGE)
*BACKING RING FLANGE
Backing Flanges,Backing Ring,Ring Flange, Backing Ring Flanges
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