Trichogramma species is a paradoxical natural enemies in the natural world. It is the smallest of its natural enemies and its body length is only 0.5 mm. Because its compound eye is red, it is called Trichogramma. There are many species of Trichogramma in nature, including Trichogramma ostriniae, Trichogramma dendrolimi, Trichogramma chilonis, Trichogramma ostriniae, Trichogramma species, and Trichogramma species. Species, some species in the nature control pest rate of more than 10%. The Trichogramma, which we now use to control corn borer, is the Drosophila trichophae, which is the highest peak of the artificial release of the parasitizing corn borer of the Trichogramma species. Generally, Trichogramma is released to the field at the beginning of the adult stage of the T. communis. Trichogramma eggs are laid in the eggs of the corn quail so that the eggs cannot be hatched into larvae to achieve the purpose of controlling corn borer. Trichogramma released in the field after 10-12 days, the descendants of the bees emerged, and continued to search for new eggs of the corn borer. The general offspring Trichogramma control the role of corn borers in the field until September.
To determine the best time for releasing Trichogramma, it is the key to make good insect forecast. Should be based on the progress of local overwintering larvae feathering, according to the situation of insect investigations, bee-letting plans to ensure that the bees and eggs meet. The initial stage of adult egg laying is the best period for the control of Trichogramma. Baicheng, Songyuan and Shuangliao in the western part of Jilin Province will start from May 20; Changchun, Siping, Liaoyuan and Tonghua in the central and eastern regions will begin on May 30; Jilin will conduct pest investigations from June 5 onwards. Investigate once every five days, accurately grasp the growth and development progress of the overwintering corn cockroaches, timely release relevant information on the corn cockroaches, and determine the best prevention and control time for each place according to the different climatic conditions of each place and the current weather forecast data.
Release time: When the overwintering rate of the adult corn borer reaches 20%, push back for 10 days for the first release of the Trichogramma period. The western 2nd generation area is around June 20; the middle and eastern 1-2 generation areas are around July 5; the eastern 1st generation area is released on the 10th of July and is released for the second time at 5 days intervals.
Number of releases: 15,000 heads per mu, the first release of 07,000 heads, and the second release of 08,000 heads.
Release setting: 1 release point per acre. Starting from the side of the bee field, number 20 is the first one to put the bee, and the first bee is 20 steps inward to be the first release point, and then the second step is to follow the forty steps. The release points, and so on, are pushed to the ground, and the first one is released, the next is 40, and the second one is the bee, and so on.
Release method: it is required to release the bee in the morning, place the bee, select the middle blade of a corn plant, tear half of the middle of the blade, roll down into a tube shape, and then use the tanned straw or needle thread (sew) in the cylinder Both can. Trichogramma eggs in the field of egg parasitism rate of 70% or more, more than 65% control effectiveness, prevention and control costs 1.20 yuan / mu, mu yield more than 25 kg, input-output ratio of 1:20 or more.
Lycium barbarum polysaccharides(LBP)have been identified as one of the active ingredients responsible for biological activities. Polysaccharides are isolated from dried Lycium barbarum through the way of boiling water extraction.
The content of Goji polysaccharide is more than 6% in dried Goji, 1.5% in the Goji raw juice and 4.5% in the Goji concentrated juice.
In China, many experts have begun to research the medical theory and component of Goji since the early 1900s. In recent yaers, through abundant medical theory research, the experts here and abroad found that the Goji has the functions as folloing.
1. Ajusting immunity,
2. Anti-aging,
3. Anti-tumor,
4. Anti-fatigue,
5. Anti-radiating damage,
6. Reducing the blood fat and sugar,
7. Decreasing blood pressure,
8. Protecting the genital system,
9. The other pharmacological action.
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