In what season do peas usually grow? Attached pest control techniques

Pea is a kind of leguminous plant with economic value, its pods, seeds and tender seedlings can be eaten, stems and leaves can also be used as fertilizer, seeds have a certain medicinal value. Peas are planted all over the world, and the requirements for the planting environment are not very high. Let's take a look at the season in which peas are usually grown. Attached pest control techniques.

What season do peas usually grow?

According to the experimental demonstration and production practice, the relationship between sowing time and harvest time in the lower reaches of the Yangtze River is as follows: autumn sunshade net cultivation from the first ten days of August to the end of August before October 1, and autumn open field cultivation from late August to mid-September and mid-October. Winter greenhouse cultivation in October-February of the following year New Year's Day, winter open-field cultivation in November-around January 1 of the following year Spring open-field cultivation from February to mid-April, summer open-field cultivation from the first ten days of May to the end of May and late June, and summer sunshade net cultivation from mid-May to mid-June and early July.

Control techniques of pea diseases and insect pests

(1) Disease control techniques

1. Agricultural prevention and control

Select disease-resistant varieties according to local conditions; implement non-legume crop rotation to destroy the advantage of pathogen infection and avoid continuous cropping; sow disease-free seeds, soak seeds in warm soup or dressing seeds with 25% triadimefon (triadimefon) wettable powder with 0.2%-0.3% seed quality or 75% chlorothalonil wettable powder with 0.2% seed quantity. Reasonable close planting, clearing ditches and drainage, enhancing inter-plant permeability, and timely removal of field weeds; scientific and rational fertilization to improve crop disease resistance; discovery of central diseased plants, timely use of drugs (especially soil-borne diseases such as blight and root rot, should be irrigated in time); the fields should be cleaned in time after harvest, and withered branches and leaves should be burnt and buried deeply.

2. Chemical control

At present, chemical pesticides are still an important means of control in the process of controlling pea diseases and insect pests, so advocating the scientific and rational use of pesticides is a necessary means to ensure the quality and safety of pea products. According to the different control objects, different types and dosage forms of pesticides were selected. In the early stage of the occurrence of diseases and insect pests, timely scientific and rational use can not only control the damage of diseases and insect pests, but also reduce environmental pollution. The selection of efficient and correct pesticides and correct application methods is the key to the scientific and rational use of pesticides.

(2) Pest control techniques

1. Agricultural prevention and control

Selecting insect-resistant varieties according to local conditions; rational layout, implementing crop rotation, appropriate thinning, increasing field permeability; digging and drying the land in winter, timely removal of field weeds and damaged leaves, reducing insect sources, cleaning the countryside in time after harvest, crop residues are concentrated and buried; central insect plants (aphids) are found and removed in time; Noctuidae pests can artificially kill larvae.

2. Physical control

Black light is set up to trap and kill adults of night moths and small tigers in the field; in view of the yellowing tendency of adults of Liriomyza huidobrensis, yellow card fly killing paper is used to trap and kill adults, generally setting 15 points / 667 points, one card per point, and changing once every 7-10 days. Scientific and reasonable protection of Liriomyza huidobrensis natural enemy wasps, Liriomyza huidobrensis cocoon wasps, Liriomyza huidobrensis cocoon wasps, these three parasitic wasps have a high parasitic rate to Liriomyza huidobrensis and can inhibit the hatching of eggs and larvae For the fields where thrips occurred in the crop seedling stage, the insects were induced with yellow or blue armyworm paper with 30 sheets of armyworm paper per 667 years, and the height of the armyworm paper was equal to the plant growth point, and the natural enemy of thrips, small flower bug bug, should be protected reasonably.