Plutella xylostella is a genus of the moth, and the vegetable cultivar also called it a filariae. It is an important pest that harms cabbage, cauliflower, Chinese cabbage and many other vegetables. In April, Plutella xylostella was moderately prevalent on cruciferous vegetables in our province. At present, the prevention and control of diamondback moth is mainly based on chemical control. Due to the large amount of reproduction of the diamondback moth, short generations and rapid variation, it is easy to produce drug resistance, and the problem of resistance of pesticides is more prominent. Therefore, comprehensive measures such as agricultural control and physical control should be adopted to improve the control and control of Plutella xylostella and its drug resistance. Agricultural control: The rational distribution of crop varieties, try to avoid continuous cropping of cruciferous vegetables, break the bridge of pest proliferation; after the harvest of vegetables, promptly clean up the fallen leaves, and then plowing, eliminate the winter and summer insects Eradication of weeds in trench fields reduces adult spawning sites and larval foodstuffs. Physical control: Plutella xylostella has phototaxis. In the adult stage, 1 black light trap is set for every 2/3 hectare of vegetable fields. Biological control: In places where conditions permit, it can release the natural enemies of the diamondback moth to control the damage. Among them, the control of Plutella xylostella was the most obvious among Plutella xylostella, Plutella xylostella and Plutella xylostella. Chemical control: The resistance of the old larvae of the diamondback moth is very strong. Therefore, attention should be paid to the control of the chemical: First, it should be controlled during the hatching period of eggs to the larval 2nd instar; Second, it can only be used 1-3 times per year, and it cannot be used frequently to prevent it. Produce resistance; the third is to use alternately with other pesticides. Optional agents are: BT (Bacillus thuringiensis) suspension 500-800 times liquid, 1% avermectin series insect extermination, extermination, insect dip light, aphid indole, 2.5% vegetable Xie Suicide 1500 times liquid 5% vegetable jelly suspension 1000 times, 0.36% Baicao 1 600-800 times, 15% batting 3500-4000 times, 5% Regent suspension 2000-2500 times, 5% Tai Tai Bao EC 1500-2000 times liquid, 5% stuck flumethasone 2000 times 1500 times, diluting 1500-3000 times, 2.5% cyhalothrin (Kung Fu) 3000 times, Suave 1000-1500 times Wait.
Hawthorn Dry with a variety of vitamins, maslinic acid, tartaric acid, citric acid, malic acid, also contains flavonoids, lactones, carbohydrates, protein, fat and calcium, phosphorus, iron and other minerals, To promote the digestion of fatty foods. Promote the secretion of gastric juice and increase gastric enzyme and other functions. Chinese medicine believes that hawthorn with consumer-delayed, convergence stop dysentery, blood stasis and other effects. Indications diet stagnation, chest phrenic fullness, hernia blood stasis atrophy. Hawthorn contains medicinal ingredients such as terpenes and flavonoids, has a significant expansion of blood vessels and antihypertensive effect, enhance myocardial, anti-arrhythmia, regulate blood lipids and cholesterol levels.
Tips
1>. Hawthorn helps digestion is only to promote the secretion of digestive juice, not through the function of the spleen and stomach to digest food, so usually spleen and stomach are unfit for human consumption;
2>. Children are in the period of tooth replacement, long time gluttonous hawthorn or hawthorn slices, hawthorn cake, detrimental to the growth of teeth. Everyone should not eat too much hawthorn, but also pay attention to timely gargle after eating to prevent harmful to the teeth;
3>. Hawthorn has the role of hypolipidemic, hypoglycemic people eat hawthorn will affect the health;
4>. teeth afraid of acid can eat hawthorn cakes hawthorn products.
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