Self-contained plant pesticides

Common chemical agents have different degrees of damage to vegetables and fruits. For example, omethoate should not be used 30 days before harvesting, and malathion may cause harm to melons and peaches. Therefore, plant insecticides should be vigorously promoted. Agent.
Now we introduce the following about plant insecticides:
(a) The purslane is aliased to radula and so on. Annual succulent herb. Stems lying supine or obliquely upward, branched from base, terete, up to 30 cm, pale green, often with bluish red, smooth and glabrous. Leaves alternate, sometimes opposite, stalk very short, leaf hypertrophy, obovate, entire, 1 cm to 3 cm long, 5 mm to 14 mm wide, small stipules, dry membranous, bisexual. Purslane 5 times boiled liquid, the pest killing rate of 46.9%.
(b) to open up an anamorphic hole, etc. Perennial herb, rhizome thick, curved, there are several stem marks, commonly known as hole, surface black, gray cross section, stem upright, single, high 1 m ~ 1.5 m, lower stem leaves have long-handled, base slightly expanded into a sheath, Two to three backs and three or three pinnate leaves or two or three compound leaves, small leaves ovate, acuminate, terminal leaves often 3-lobed and pinnately nicked, lateral leaves with irregularly thick serrated edges, often With feathered nicks or lobes, the upper leaves are smaller. Use 14 grams of whole grass to 300 milliliters of water and boil for 1 hour. After filtering, spray vegetable worms and kill 57% of insects.
(C) Pulsatilla perennial herb. Up to 50 cm in height, the entire plant is densely covered with white pilose, roots conical, and thickly straight. Basal leaves mostly, three out, long-handled, broadly ovate-blade, centrally dividedly sessile, sessile, 3-parted, lobed and then 2- or 3-parted. Pulsatillae 500 grams of water 5 kg, boiled or soaked for one day, filtered to prevent tigers, aphids and other soft pests.
(d) celandine Alias ​​berberine, heartbroken grass and so on. Herbs perennial, 30 cm to 80 cm tall, long rooted, more branched, yellowish or dark brown, densely fibrous roots, erect stems, many branches, slender white hairy, red and yellow juice in the body, leaves alternate, 1 ~ 2 pinnate deep lobes, basal leaves 10 cm ~ 15 cm, 5 pairs of leaves ~ 8 pairs, from top to bottom gradually smaller, top lobular broadly obovate, apex obtuse, edges are irregularly nicked. (1) Control cabbage Pieris celandine 1.5 kilograms, lime 0.5 kilograms, add water 3 kilograms for 1 hour, made gravy, spray, insecticidal rate of 70%. (2) At the flowering stage, the whole grass is cut, shaded and dried, powdered and sprinkled on the vegetable plots. There are special effects on the earthworms. (3) Dry the whole grass 800 grams, chopped heated water 5 kg soak 1 day ~ 2 days, control aphids, beetles effective.
(five) Agrimony grass alias alias grass and so on. Herbs perennial, up to 30 cm to 70 cm, with white hairs and glandular hairs. The rhizomes were developed with slender fibrous roots and a conical upwardly curved white bud emerged from the tip of the end of autumn. Stems erect, ribbed, upper branches. Odd pinnate compound leaves, alternate, basal leaves, apex acute or long acuminate, base cuneate, margin coarsely serrate. The entire grass is smashed and 21 kg of water is filtered to remove slag and sprayed to control the aphid effect by 70%. In addition to the above-mentioned plants, the plant-based insecticides include common wild plants such as Duliu, Pinellia, Speranskia sp., Northeastern peppermint, Northeastern gentian, egg-leaf peony, cocklebur, Kochia scoparia, etc., which are rich in resources and widely distributed. Easy to use, no pollution, no harm, it is worth promoting.

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