Necessity and urgency of online pest monitoring
The agricultural losses caused by pests and diseases every year are very huge, which not only causes serious waste of resources, but also causes huge economic losses. An effective way to prevent agricultural diseases and insect pests is to strengthen pest and disease detection and early warning. Through on-line monitoring of pests and diseases, it not only provides a basis for prevention and control of plant diseases and insect pests, it has won the prevention and control time, through effective prevention, minimized economic losses, and the quality of agricultural products has also been obtained. Promote. With the development of science and technology, and the need for the actual work of pest and disease monitoring and reporting, the necessity and urgency of on-line monitoring of pests and diseases has become increasingly apparent.
Although monitoring and early warning of plant diseases and insect pests is one of the keys to disaster prevention and reduction, due to the backwardness of the forecasting technology for a long time, it has severely restricted the development of the forecasting work. Traditional means of surveying and forecasting mainly rely on artificial techniques or visual inspection to obtain these characteristic information. It is not only slow, error, poor real-time, and labor intensity, but also some features are difficult to describe quantitatively, which severely restricts the promotion of information management technology. Therefore, the realization of online pest monitoring is an urgent need for the development of agriculture and forestry informatization.
On-line monitoring of pests and diseases mainly uses computers to simulate human visual functions, obtain information from images of objective things, process and analyze them, and finally use for actual measurement, control, and detection. The advantages of on-line monitoring of pests and diseases are obvious. It has the characteristics of high speed, large amount of information, and many functions, and therefore can play an important role in the current development of agriculture. It is mainly used for quantitative diagnosis, monitoring, early warning and prevention of crop pests and diseases, etc. jobs.
At present, strengthening the construction of agricultural pest detection and early warning information system is the key to developing China's modern agricultural industry, increasing the competitiveness of agricultural products in the international market, realizing the increase of farmers' income, agricultural efficiency, and the sound and sustainable development of agriculture and forestry industry. Therefore, it has become a top priority to realize online pest monitoring. The plan indicates the direction for the development of automatic identification technologies for diseases and pests in the future, laying the foundation for further advancement of monitoring and early warning of plant diseases and pests.
[Advantages of α-linolenic acid compared to DHA]
DHA (brain gold) is one of the derivatives of α-linolenic acid. Supplementing α-linolenic acid has advantages over directly supplementing DHA:
Different medical importance: α-linolenic acid is an important nutrient in the 21st century. It is an unsaturated fatty acid necessary for the body. The human body cannot directly synthesize it by itself and must be ingested from the outside world. DHA is not. The human body's own regulation is different: α-linolenic acid is the precursor of DHA, which can provide DHA to the maximum extent according to the human body's needs. However, direct supplementation of DHA is a strong supplement that the human body cannot control itself and is prone to negative effects. Applicable to different groups of people: α-linolenic acid is helpful in regulating blood pressure, blood lipids, and blood sugar, while DHA comes from fish oil. Pregnancy-induced hypertension inevitably contains animal cholesterol, and women with gestational hypertension, obesity, and overweight cannot use it. use. The "Usage" of the secondary directory is modified to:
Direct drinking: average daily dose of 5-10 ml; drop on warm rice, bread or steamed buns, reduce to 1-5 ml for children.
Smart salad dressing: Add to cold dishes or salads.
Soup seasoning: drop into cooked porridge, soup, and milk.
Baked pastries: Use organic nutritious oils instead of hydrogenated oils or butter in baked pastries.
Homemade preparation: mix it with ordinary edible oils such as soybean oil, peanut oil or rapeseed oil in a ratio of 1:5-1:10 before consumption.
Secret combination: Take 5-10 ml of nutritious oil and mix it with sugar-free homemade yogurt or sugar-free yogurt before eating. It is a popular anti-cancer food therapy in Europe and the United States.
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