The prevention and control measures of diseases and insect pests should be done well if the yield of broad bean is high.

Planting broad bean in the field, diseases and insect pests are inevitable, but how can the harm of broad bean diseases and insect pests be reduced to a minimum? Then it is necessary to do a good job in the prevention and control of diseases and insect pests of broad beans:

Broad bean

I. Agricultural prevention and control

New broad bean varieties with disease resistance were selected, rotation and non-legume crops were carried out for more than three years, interplanting broad bean and interplanting broad bean and isolation zone were adopted to protect and plant broad bean, plant cultivation control technology was adopted, and the distribution of light, heat, water and air among broad bean plants were coordinated. timely removal of diseased plants, removal of diseased leaves and pods, artificial cleaning of the countryside.

II. Physical prevention and control

1. Facility protection: close the vent of large facilities with anti-insect net, cover with plastic film, anti-insect net and sunshade net for rain shelter, sunshade and insect-proof cultivation, so as to reduce the occurrence of broad bean diseases and insect pests.

2. Trapping and repelling: broad beans cultivated in protected areas can use yellow boards to trap aphids and Liriomyza huidobrensis, hanging 30 ~ 40 25cm × 40cm yellow boards per 667m2. Broad beans cultivated in open field repelled aphids by spreading silver gray plastic film or hanging silver gray film strips, and a frequency vibrating insecticidal lamp was set up for each 2hm2~4hm2 to trap and kill pests.

III. Biological control

Natural enemies: actively protect and utilize the natural enemies of aphids, Liriomyza huidobrensis and other pests to control broad bean diseases and insect pests.

Broad bean

IV. Biological agents

Biological pesticides such as azadirachtin, pyrethrin, agricultural antibiotic 120, oxymatrine, Bacillus thuringiensis and so on.

V. Pesticide control

Red spot, rust and aphids are the main diseases and insect pests of broad bean, which can be controlled by high efficiency, low toxicity and low residue pesticides. In recent years, the harm of leaf miner to broad bean has become more serious, which can be controlled by spraying 1000 times of phoxim.

Agents: shall meet the requirements of GB 4285 and GB/T 8321 (all parts). Pay attention to the rotation of drugs, rational mixed use, and strictly control the safety interval of pesticides. Highly toxic and high residual pesticides prohibited for disease prevention and treatment: methamidophos, methyl parathion, parathion, monocrotophos, phosphoramines, methamidophos, methyl isomarbophos, tert-butyl, methyl thiocarbophos, boridophos, internal absorption of phosphorus, carbofuran, aldicarb, aldicarb, thiocarbophos, thiocarbophos, flies, parathion, chlorazophos, benzenophos and other highly toxic pesticides are not allowed in the cultivation of broad beans.