The cultivation of green vegetables is the adoption of comprehensive technical measures to prevent diseases, and to create ecological conditions conducive to the growth of vegetables that are not conducive to the occurrence of diseases and insect pests. Scientifically select high-efficiency, low-toxicity, low-residue chemical pesticides to reduce the pesticide residues in vegetables. National standards must take the following five measures in the cultivation process.
Put a good seed off
To use high quality, high yield, resistance (resistant) vegetable pests.
Prepare for a good broadcast
1. Before sowing, plowing should be done early to expose the soil to remove residual roots and branches and leaves, and to eliminate the residual bacteria source and insect source. 2, do a good job in seed treatment: use warm water soaking, that is, with warm water 55 °C, soak for 15 minutes, you can kill the seeds attached to the surface of the bacteria.
Good management of cultivation
Strengthen management, and time seedlings, Dingmiao, weeding, weeding, removal of diseased plants, control of pest transmission.
Put a good fertilization off
1, base fertilizer should be dominated by organic fertilizer, and to fully decomposed to reduce the introduction of pathogenic bacteria and eggs. 2. Top dressing should be based on decomposed feces and urine, supplemented by multiple compound fertilizers to prevent excessive application of nitrogen fertilizer leading to leggy. Fertilizer urea, diammonium phosphate and other fertilizers should be discontinued 15 days before harvest. 3, the rational use of hormones and trace elements, in strict accordance with the label instructions the use of concentration and dosage to prevent overdose caused by phytotoxicity.
Good prevention and control
In terms of prevention and control, “based on the physical method, biological pesticides are at the forefront, earth-based pesticides are supporting actors, and high-efficiency, low-toxicity residual chemical pesticides are used to help power, and highly toxic pesticides are not applied to fields.â€
The physical method is used to exterminate insect-free insecticidal yellow films. The insects such as aphids, whiteflies, and spotted lilies are sensitive to yellow and have a strong yellowing characteristic. This special yellow is used in combination with special viscose to achieve Trapping of pests.
Try to use biological pesticides and plant pesticides to control Pieris rapae and Plutella xylostella with BT-emulsion bacillus; use agricultural streptomycin to control bacterial keratoses, Chinese cabbage soft rot, and black rot; use dingycin to prevent and control the occurrence of dry rot Disease and root rot; control of aphids with ET-107 acaridin.
The scientific use of chemical pesticides must earnestly implement the "Pesticide Management Regulations" and "Pesticide Safety Interval Regulations". The use of DDT, methamidophos, methyl isophosphorus and other highly toxic high-residue pesticides is strictly prohibited.
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