1. Winter plucking bollworm is generally wintering at 2.5-6 cm (up to 9 cm deep) from the ground. Winter plowing can damage the diverticulum, change the natural state of the carcass, and reduce the emergence rate of late spring; The maggots turn to the surface, causing them to die, freeze or be eaten by their natural enemies. Some insects can be turned into the deep layers of the soil to make them unable to normally emerge and become suffocated, thus reducing the source of overwintering insects. The sooner the winter plowing time is, the better. Generally, after the harvest of the former crop, it must be carried out. Before the earth is frozen (more than 5 cm in the frozen soil layer), it will be cultivated to prolong the weathering time, improve the pest control effect, and facilitate the multi-admission. Rain and snow. The depth of ploughing should be more than 10 cm; the deeper the winter ploughing, the better the worming effect. It should be noted that due to the strong fly ability of the adult Helicoverpa armigera, winter plowing must be carried out in large areas in order to be effective; in addition to the reserved white cotton land, wheat fields are interplanted, orchard gaps, and winter plowing is also required.
2. Winter irrigation After winter ploughing followed by winter irrigation or spring irrigation, not only can the soil be immersed and weathered, but also the mortality rate of overwintering lice can be increased. According to a study by the Chinese Academy of Agricultural Sciences, when the relative soil moisture content is 40%, the mortality rate of Helicoverpa armigera is 35.7% and the emergence rate of adult is 40%. When the soil moisture content is 70%, the mortality rate of Helicoverpa armigera is 46.7%. The eclosion rate was 33.3%; when the soil moisture content was saturated, the mortality rate of pupa was 100%. According to another data, the wintering mortality rate of cotton bollworms is about 80% for winter plowing and winter plowing, and the wintering mortality rate is 60-70% for non-irrigated plots and 30-40 for non-irrigated plots. %.
3. Winter sun In the cold winter, the freezing treatment of cotton seeds can reduce the moisture content of the seeds and increase the storage stability. Second, it is beneficial to increase the germination rate of seeds and enhance the cold resistance of seed seedlings after seedling emergence. Third, winter cold can be directly frozen to death in cottonseed wintering cotton pests (According to the survey, cotton bollworm larvae in the winter of cotton seed usually accounts for about 15% of the amount of overwintering insects), and ultraviolet rays in the sun can kill some Pathogens attached to the seed surface. Freeze drying method: choose sunny day to select the good cotton seeds on the leeward, sunny open space, the thickness of 3-4 cm, continuous freezing sun 7-10 days; if the spring before sowing 3-5 days, then the effect better. For cotton seed with water content above 12%, do not freeze drying to avoid freezing seeds and loss of germination.
4. Winter shovel is to eradicate weeds. Some pests often migrate to winter in fields and surrounding weeds after the crops are harvested. By early spring, these weeds are often used as “refuges†and wild hosts for the breeding of overwintering pests; experts have used the weeds around cotton fields. On the previous investigation, 8-15 tigers were found in overwinter land per square metre, and the number of 100 insects (eggs) was 1194 in the early spring weeds. Therefore, it is an effective measure to prevent and control overwintering pests by combining fat and fertilizer in winter and spring, eradicating weeds in and outside the fields, or spraying the weeds in early spring.
5. In winter, some pests (such as corn borer, etc.) are often hidden in the stem or cob of the host crop after harvesting; in winter or early spring, the stems or cobs of these host crops are used as fuel (or Feed, fertilizer, etc.) are burned and can greatly reduce the overwintering base of pests.
6. The winter coating of white trunks in winter will not only prevent sunburn and frost damage of fruit trees, but also eliminate a large number of pathogens and pests that overwinter over the trunk. The proportion of whitening agent is generally: 10 parts of quicklime, 2 parts of lime sulfur, 1 part of salt, 2 parts of clay and 35-40 parts of water. The time for whitening is preferably 2 times, the first time after deciduous fruit trees before the soil freezes, and the second time in early spring.
7. Winter Binding uses the pests' selectivity to wintering sites. After the autumn, the grass is tied to the big branches of fruit trees or broken into sack pieces to trap the insects and pupate them for winter. According to the survey, this method has a 47-78% effect on the trapping of P. edulis and P. edulis, and it is also very good for spider mites, red spiders, leafworms, leaf spines, leaf roller moths, and leaf roller moths. The trapping effect, especially when the density of overwintering worms was greater in the year, was more pronounced.
8. The winter skin scraper saying: "to eat pears, scrape bark." In the trunks of fruit trees, cracks, and cracks in trunks, there is often a great deal of wintering germs and
Green Tea Extract Powder EGCG (Epigallocatechin Gallate) is an anti-oxidant polyphenol found mostly in green tea. Recent studies have indicated the EGCG could be a powerful natural fat burner.it may have health benefits as a nutritional supplement for cancer, atherosclerosis, blood sugar control, HPV virus infection, and neurodegenerative diseases.
Active Components and Constitutional Formula
The cardinal antioxidative ingredient in the green tea extract is green tea catechins (GTC), which comprise four major epicatechin derivatives; namely, epicatechin (EC), epigallocatechin (EGC), epicatechin gallate (ECG), and epigallocatechin gallate (EGCG).
Other components include three kinds of flavonoids, known as kaempferol, quercetin, and myricetin.
EGCG 6%-95%
Catechin 15%-90%
L-Theanine 20%-99%
Tea Saponin 10%-90%
Green Tea Extract,Green Tea Extract Powder,Green Tea Extract Egcg,Green Tea Liquid Extract
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