Caron Steel Flange,Steel Flange,Stainless Steel Threaded Flange Zhongyan Machinery Co., Ltd. , http://www.juhengflanges.com
I. Agricultural control measures
Promote disease-resistant varieties and widely use seed treatment technology. Seed disinfection work before sowing, using warm soup soaking, chemical treatment and other methods have a good effect on the prevention of pests and diseases.
Strengthen cultivation management and carry out soil leisure. High temperature sterilization in summer and freezing in winter (around -5 °C) to reduce the source of pathogens in the soil while reducing soil salinization.
Second, biological control measures
The use of sexual attractants to control lepidopteran pests is currently effective in the control of beet armyworm, Spodoptera litura, and Plutella xylostella.
Promote the virus-inducing compound insecticidal technology to reduce the number of insect populations in the next generation.
Promote the application of microbial pesticides to control vegetable pests and diseases.
Parasitic insects and predatory natural enemies are used for the control of vegetable pests and play an important natural control effect.
Third, physical control measures
Temperature control technical measures. By controlling the temperature in the shed to the lethal temperature of the whitefly (35 ° C -40 ° C), combined with the fumigation of the medicament to control the whitefly.
Color lure technical measures. Using pests to color the traits in the field to hang yellow sticky board to control aphids, whitefly, Liriomyza sativae and other pests.
Photo-induced technical measures. Use frequency-vibration insecticidal lamps and black light lamps to trap adult insects of the night moth.
The use of functional membranes (silver gray membrane, black membrane, etc.), insect nets and other repellent, isolation techniques to control pests and diseases. In the field, a silver-gray film and a silver-gray film strip are used to repel aphids. In the summer, the greenhouse vegetables cover the insect-proof nets to control vegetable pests.
4. Scientific and rational use of chemical pesticides
Strictly control the variety of pesticides, and the high-toxic and high-residue pesticides that are prohibited from being used on vegetables are resolutely used.
Symptomatic medication, clear control targets.
Grab the critical period of application of pests and diseases.
Strict implementation of the safe harvest period of pesticides.
Pay attention to the rational rotation of several pesticides.
It is necessary to select reasonable application equipment and methods to strictly control the quality of pesticide application, avoid large loss of pesticides, and reduce pollution to vegetables and the environment.
Technical measures to reduce the use of chemical pesticides in vegetable fields
With the improvement of people's awareness of the quality of living environment and the importance of food safety, building a healthy city has become a strategic goal of building a harmonious society. Therefore, we have established a sound safety production supervision system for agricultural products to ensure the safety and hygiene of agricultural products, and to prevent and control vegetable pests and diseases. With this aim, the idea of ​​comprehensive prevention and control is proposed. In terms of measures, it is considered to use less or no chemical pesticides, strengthen the promotion of comprehensive prevention and control measures such as agriculture, biology and physics, and improve the level of agricultural health services.
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