Raising big bosses in the age of rebirth

Chapter 569 Tour, Insect Pests

When I woke up that day, Xie Linlang dressed more formally and went to participate in the pest problem in Fujian Province two days ago.

The leaders of Fujian Province arranged for her to take the main position, and even thoughtfully prepared a soft leather notebook and two pens.

Compared with the previous stop in Guangdong Province, the people in Fujian Province are so polite and considerate that they make you feel at home.

The meeting started quickly, because Xie Linlang was not the host, so she just listened in from the beginning, and did not express herself.

She was such a person in the first place, and she didn't need to attract too much attention if it was not her own occasion.

The meeting was conducted around the theme of pests.

Insect pest is a combination of disease and pest, often causing adverse effects on agriculture, forestry, animal husbandry, etc. It generally refers to the damage caused by harmful insects to plant growth, and also refers to the damage caused by arthropods to plants.

There are more than 50 species of insect pests recorded, and more than 20 common species.

Various insects have different mouthparts due to different feeding and feeding methods, mainly chewing mouthparts and piercing-sucking mouthparts.

Pests with chewing mouthparts, such as beetles, locusts, moth and butterfly larvae, etc., all feed on solid food, harm roots, stems, leaves, flowers, fruits and seeds, and cause mechanical damage, such as nicks, holes, breaking, drilling Cutting stems, cutting roots, etc.

Piercing-sucking mouthparts pests, such as aphids, scorpions, leafhoppers and mites.They use needle-like mouthparts to pierce plant tissues to suck food, causing plants to shrink, wrinkle leaves, leaf curls, dead spots, growth points fall off, and galls (formed by saliva stimulation) and so on.

Knowing the mouthparts of pests can not only identify the pest species from the damage status, but also provide a basis for chemical control.

Infectious diseases can be divided into fungal diseases, bacterial diseases, viral diseases, nematode diseases and plant pathogenic nematodes according to different pathogenic organisms.

There are the most types of diseases caused by fungal infection. Generally, they are easy to develop when high temperature and humidity are high. Most of the germs spend the winter in the diseased residues, seeds, and soil, and the spores of the germs are spread by wind and rain.Under suitable temperature and humidity conditions, the spores germinate, and the germ tubes grow and invade the host plant to cause damage, which can cause plant lodging, dead seedlings, spots, black fruit, wilting and other symptoms, with obvious mold layers, black spots, etc. Powder and other symptoms.

Bacterial diseases are diseases caused by bacterial infection. The bacteria that attack plants are rod-shaped bacteria, most of which have one to several flagella, which can invade through natural orifices and wounds, spread by running water, rain, insects, etc. It is prone to disease under high temperature and high humidity conditions. Symptoms are wilting, rot, perforation, etc. In the later stage of the disease, in wet weather, bacterial mucus overflows from the diseased part, which is the characteristic of bacterial diseases.

Viral diseases are mainly transmitted by poisonous insects. Some viral diseases can be transmitted by nematodes. Viruses overwinter in living tissues such as weeds, tubers, seeds and insects. The main symptoms are mosaic, yellowing, curling leaves, deformity and clusters , dwarfing, necrosis, spots, etc.

Nematode disease Plant pathogenic nematodes are small in size and most of them cannot be seen by the naked eye. The parasitism of nematodes can cause plant malnutrition and weaken growth, shrinkage, and even death. Unable to grow normally, growth stagnation and yellowing of aboveground parts, etc., mainly spread by seedlings, soil, fertilizers, etc.

After discussing for a while, the leader asked Xie Linlang if she had any opinion?

"Ah, thanks for asking, about the pests..." Xie Linlang put forward a few innocuous opinions on several types of pests. In fact, these practices have long been suggested, and those in later generations are mainly bound into books with a large number of experiments and collected data. Speaking of which, Xie Linlang didn't feel anything else.

Regarding the content of the pests, in the past two days, she was not purely for fun. She already had some keywords. With this keyword, she can express her own opinions and opinions.

"In fact, pest control can be considered from three aspects: mechanical control method, chemical control method, and biological control method.

The first is mechanical control methods, such as using the phototaxis of pests for light trapping; according to the weight of seeds with diseases and insect pests is lighter than that of healthy seeds, seeds with diseases and insect pests can be eliminated by winnowing or water selection, and seeds can be soaked in warm water.

Chemical control method is the method of applying chemical pesticides to control pests and diseases.The main advantages are fast action, good effect, easy to use, can eliminate or control a large number of pests and diseases in a short period of time, and are not restricted by regional seasonality. It is an important means of preventing and controlling pests and diseases.

However, a large amount of pesticides are put into the environment, and we must pay attention to variables. Unreasonable use and abuse of pesticides will cause unpredictable consequences. After all, these foods will eventually enter the mouths of our public. The third point is One thing I value more, but it is not popular at present, is biological control.

Biological control is a method of using various beneficial organisms to prevent and control pests and diseases, mainly including the following aspects: First, using parasitic or predatory insects to control parasitic insects, including two types of endoparasites and ectoparasites, through artificial reproduction , to release parasitic insects into the field to control pest population density,
The types of predatory insects mainly include praying mantises, aphid lions, and walking insects. These insects mainly prey on pests and play an important role in suppressing the population of pests. Propagating and releasing these beneficial insects in large numbers can control pests.

The second is microbial control, using fungi, bacteria, and viruses to parasitize the pests, making them sick and dying or inhibiting them from harming plants.

Third, animal control uses beneficial birds, frogs, chickens, ducks, etc. to eliminate pests, such as ducks to eliminate locusts, which have existed since ancient times.

Fourth, the application of sterile insects uses radiation or chemical treatment to make pests lose their fertility and cannot reproduce offspring, so as to achieve the purpose of eliminating pests. "

Just these words, professional and insightful, completely conquered all the officers present.

Originally, everyone should be polite, but in the past two years, we have not seen some scholars who are purely gold-plated or talk about the mountains, so that everyone is actually not optimistic about the so-called experts who are sent to give speeches, and they are more optimistic about those who can bring them. Technology, the kind of hard-working experts who bring new ideas and stay in Fujian Province for a long time to witness the birth of the results.

Unexpectedly, Xie Linlang was not too old, but his mastery of professional knowledge was astounding.

Xie Linlang's attitude at the beginning of the meeting is what she is now. It's not because everyone is looking at her at this meeting, and there are emotions such as arrogance and arrogance.

This steady look made some people directly question Xie Linlang without any scruples about the possible embarrassing consequences.

(End of this chapter)