To effectively control pests and diseases and cultivate high-quality and safe vegetables, pesticides must be used scientifically and reasonably. Before use, it is necessary to understand the control subjects and methods of use of each pesticide and accurately select medicines so that they can be targeted. There are the following four principles for using vegetables in greenhouses.
One is the timely medication. The pesticide should be applied at the initial stage of pests and diseases. Taking into account the warm and moist environment in the shed, it is not appropriate to spray on cloudy or rainy days to prevent the shed from overheating and reduce the efficacy. At the same time, do not use sulfur preparations to prevent diseases of melons and vegetables at high temperatures to avoid phytotoxicity.
The second is rotation of medication. Pesticides of different types and mechanisms of action should be used interchangeably. For example, dimethoate belongs to organophosphorus pesticides, and the enemy kills pyrethroid pesticides. Their mechanism of action is different. If attention is paid to rotation, pest resistance can be avoided or delayed. The production.
The third is safe medication. In the production of vegetables, high-efficiency, low-toxicity, low-residue pesticides should be used. Never increase the concentration of the drug at random. The number of drugs used should not be excessive, and the drug should be used strictly according to the safety period. At the same time, the use of highly toxic pesticides such as organic chlorine, carbofuran, and methamidophos must be strictly prohibited.
Fourth, do not purchase expired pesticides. When purchasing or using chemical pesticides, the quality of pesticides must be identified. If you purchase or use pesticides that have already failed, it will not only directly cause economic losses, but also cause phytotoxicity.
24% Flavonoids Ginkgo Biloba Extract is a kind of Ginkgo Biloba Leaf Extract, which is the Key Product of our company. The stems and leaves of Ginkgo Biloba Leaf are used as raw materials to extract, concentrate and dry yellow brown powder.
Ginkgo Biloba
Born in the sun, moist and fertile loam and sandy loam for china's specialty, generally for artificial cultivation.the cultivated area extends to liaoning in the north, guangdong in the south, zhejiang in the east, shaanxi and gansu in the west, and sichuan, guizhou and yunnan in the southwest.
It can improve brain circulation and protect brain cells and blood brain barrier.It can improve learning and memory, protect nerve, reduce hearing nerve damage, and significantly improve aging, dementia and brain dysfunction.For cardiovascular system, it can reduce myocardial oxygen consumption, protect ischemic myocardium, reduce the occurrence of arrhythmia, dilate blood vessels, and inhibit angiotensin-converting enzyme (ACE).Free radical scavenging, anti-lipid peroxidation;Antiplatelet activating factor, inhibiting platelet;It can enhance the stability of biofilm.It can relax tracheal smooth muscle directly and relieve spasm on gastrointestinal smooth muscle.It has the effect of lowering blood lipid;It has anti-microbial effect;Can increase the secretion of sebaceous glands, make dry or aging skin to increase ruddy color.Through the test, it has the effect of expanding the arteries and vessels, and can resist the vasoconstriction caused by adrenaline, and has the effect of lowering blood cholesterol in addition.
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