Performance and use of sulfur vaporizer – Detail instructions

Greenhouses are often closed for long periods of time to reduce indoor and outdoor air exchange in order to reduce heat dissipation and lower heating costs when operating in winter and early spring and late autumn. The direct consequence of this is poor greenhouse ventilation and high indoor air humidity, which makes the incidence of indoor diseases increase dramatically. In order to control diseases, and have to frequently use a variety of pesticides, and even not hesitate to use highly toxic, high residue pesticides.

A large number of frequent use of pesticides on the one hand, so that indoor pathogens may produce resistance, the use of drugs to prevent and control the effect is getting worse and worse; on the other hand, it is also very easy to cause pesticide residues in vegetable products, to the safety of the product pose a hidden danger. With the continuous improvement of people’s material and cultural living standards, the requirements for green pollution-free and non-polluting food are getting higher and higher, and the state and the industry are getting stricter and stricter in the control of the use of pesticides. The use of pollution-free, non-residual pest control methods are increasingly favoured by the majority of consumers.

Sulfur vaporizer working principle

Sulfur is one of the oldest pesticides, even in ancient Greece, people use sulfur to control pests, it has insecticidal, acaricidal and bactericidal effect, it has selective toxicity to fungal spores and mites of the powdery mildew family, and it has good control effect on fungal pests such as powdery mildew, black spot disease, grey mould and other fungal pests as well as aphids, whiteflies, thrips, leaf miners, red spiders and other insect pests.

The working principle of sulfur vaporizer is to sublimate the high purity sulfur powder (some made into cake) directly into gaseous sulfur by heating with resistance wire or light bulb, which is uniformly distributed in the relatively sealed greenhouse to inhibit the growth and development of the pests and diseases in the indoor air and on the surface of the crops, and meanwhile to form a layer of uniform protective film on all parts of the crops, which can play a role in killing and preventing the invasion of the pathogenic bacteria, thus achieving the role of protecting the crops and ensuring their normal growth. Ensure its normal growth.

The biggest advantage of using sulfur vaporizer is that there is no solid sulphur sprinkled on the surface of the crop, there is no residue on the flowers, fruits and leaves, especially for some low and dense crops, it can make the agent evenly distributed on the back of the leaves, especially for the aphids inhabiting in the back of the leaves and easy to disperse the whiteflies with better control effect.

At the same time, sulfur vaporizer will not increase the humidity in the greenhouse compared with spray application, which can effectively avoid the occurrence of high humidity diseases. Therefore, it is regarded as a residue-free method of crop pest control, especially for the control of crop powdery mildew, which is an effective and environmentally friendly method. Test results show that in the room temperature 19 ℃ ~ 26 ℃ range, sulfur evaporation up to 5 g / h ~ 10 g / h, room temperature at 30 ℃ sulfur evaporation up to 12 g / h, it can be in a short period of time (about 3h ~ 4h) within the sulfur to reach the lethal concentration of powdery mildew bacteria, so as to effectively prevent the treatment of powdery mildew.

The use of sulfur vaporizer and steps

As a preventive fumigation, can be 5 days ~ 7 days fumigation once, each sulfur vaporizer (refers to the fumigator working time, the same below) 1h ~. As a therapeutic fumigation, in the early stage of disease occurrence, can be every 3~5 days continuous fumigation twice, each fumigation 2h~3h; susceptible to disease is heavy, should be fumigated every day 2h~3h; susceptible to disease is serious, the fumigation time can be extended to 8h per day, no more than 3 days of continuous fumigation, and then return to 2h~3h fumigation time, at the same time according to the different situations of plant growth, susceptible to disease status, temperature and humidity, natural conditions, etc. At the same time, according to the plant growth status, temperature and humidity, natural conditions and other different circumstances, to strengthen the management, reasonable control of fumigation time, and with the use of fungicides, in order to achieve the ideal control effect. Generally in the evening 18:00 ~ 20:00 to start fumigation, fumigation is over, keep the greenhouse sealed for more than 5h, and then ventilation, in order to maintain the effectiveness of bactericidal.

Installation:

In accordance with the effective radius of the fumigant, with a hanging line or hanging wire will be evenly hung in the greenhouse crop canopy or above the location. For plastic film greenhouses and greenhouses, the distance of the fumigator from the plastic film on the roof of the greenhouse shall not be less than 1 m ~, so as to avoid damage to the plastic film, if the installation space is limited, in order to prevent the sulfur gas damage to the film, can be set up in the fumigator above the 1m umbrella-shaped waste film for the protection of the film (Figure 2) or directly to the sulfur fumigators and protective cover to make an integral whole (Figure 3); on the solarium, the fumigator should be suspended in the greenhouse span For solar greenhouses, the fumigators should be hung in the centre of the greenhouse spanwise or at the back wall. The effective working area of each fumigator should be controlled at 60m2~100m2. The installation of electric wires and control switches should be higher than the ground to avoid touching the operators, and the electric wires should be routed along the greenhouse skeleton or column as much as possible, and the switches should be installed on the column or back wall of the greenhouse operation corridor. The switch should have waterproof, moisture-proof, leakage and overload protection; the wire should avoid peeling off the skin and exposing the metal wire. Circuit and equipment once installed, shall not be arbitrarily dismantled and relocated.

Sulfur vaporizer loading

The medicine mantle from the sulphur fumigators, remove the residue in the mantle, the mantle inside and outside the surface scrubbing, and then, the sulphur powder (or cake) into the mantle, pay attention to the agent should not be loaded too full (not more than 2/3 of the mantle) to avoid the boiling overflow, the amount of general fumigators each time to join the amount of powdered sulphur of 30g ~ 40g.

Sulfur vaporizer bowl

Clean the surface of the fumigator heater and the bottom of the bowl, the bowl will be placed in the bowl

to the surface of the fumigator heater, to ensure that the two are in close contact, in order to facilitate heat conduction.

Sulfur vaporizer electricity

Turn on the power, the fumigator will start to work, the end of the work, cut off the power.