Goji, Goji Berry, or wolfberry is the fruit of either the Lycium barbarum or Lycium chinense, Lycium is a genus name and pronounced similarly to the word "Lycos", which means wolf in Greek. Goji is pronounced similarly to its Chinese pinyin "gÇ’uqÇ". With the increase of its exports, the name "goji" is becoming more and more popular.
Goji berry ( [Goji" means [happy") has been used for thousands of years by herbalists in China to protect the liver, help eyesight, boost immune function, improve circulation, and promote longevity and overall well being. It has only recently gained popularity in the west, it has become so polar, in fact, the Time Magazine recently named the Goji berry as [super-fruit" of the year. A big reason why Goji berries have quickly become a favorite nutritional supplement is that its impressive list of ingredients. The Goji berry, also called the wolfberry, is a bright purplish red or purple red berry that comes from a shrub that is native to China. In Asia, goji berries have been eaten for generation in the hope of living longer.
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It is impossible to apply pesticides without pesticides. Therefore, the state has considered this factor in the formulation of standards. It only determines the residue standards for certain pesticides. As long as the rational application of pesticides can meet this standard, in fact, many growers will not be reasonable. Apply medicine. As far as Chengdu City is concerned, 30% of farmers use highly toxic pesticides on leafy vegetables, such as methamidophos, monocrotophos, and methyl parathion, and high residual pesticides are sprayed on the leaves. In addition, the Chengdu Crop Protection Department survey found that many farmers generally fight drugs one day before harvesting vegetables, which does not meet the pesticide safety interval regulations, resulting in pesticide residues exceeding the maximum allowable pesticide residue limits, posing a threat to food safety.
There are two points worth noting in the analysis of pesticide sales and application status in our province: First, the structure of pesticide products is irrational. There are 30% pesticides in our product structure, pesticides account for 70% of total pesticides, organic phosphorus accounts for 70% of pesticides, and highly toxic organophosphorus accounts for 70% of organophosphorus pesticides. The province's use of pesticides was analyzed from 1987 to 1991. The ratio of insecticides, bactericides, herbicides and other pesticides was 75:15:3.5:6.5, which has not changed much. Pesticide product structure is aging, low technical content, high toxicity, high residual toxic pesticides are mostly. Second, farmers' awareness of safe and rational drug use is lacking, and they lack knowledge of safe and rational drug use. There are blind drug use cases, such as the listing of pesticides on the market, and unauthorized use of increased drug concentration and frequency. Therefore, the following points must be noted for rational pesticide application:
First, it is more popular to promote the use of highly effective, low toxicity, low residue pesticides. The first thing to know is that banned pesticides in vegetable production are: Phosphorus (3911), Phosphorus (Suhua 203), Parathion (1605), Parathion (methyl 1605), Phosphorus ( 1059) Killing scorpion, monocrotophos, phosphoamine, methamidophos, isopropylphosphor, trisphos-ium, omethoate, zinc phosphide, aluminum phosphide, methylthiophosphonium, methylisophospor, Cyanide, carbofuran, fluoroacetamide, arsenic, insecticidal fleas, Xilisheng, Sailisan, net ulcer, chloropicrin, pentachlorophenol, dibromochloropropane, 401, HCH, DDT, chlorine Dan and other highly toxic, high residue pesticides.
Second, the issue of safety intervals. Make sure that the vegetables can be marketed after a safety interval has passed after applying the pesticide. After pesticides are sprayed on vegetables, regardless of their stability, there will be complex chemical and biochemical reactions under natural conditions and after biochemical actions, and ultimately lose their toxicity. The last time pesticides are applied until harvest time is to ensure the above changes. The time when the process is completed is called the safety interval. The length of the interval is different from the season of pesticides and crop varieties. For example, the safety interval between cabbage and Chinese cabbage is not less than 7 days: 40% of Dimethoate EC is ≥10 days and 90% of trichlorfon is ≥7days. 2.5% cyfluthrin EC is ≥7 days, 50% anti-inflavor WP is ≥11 days, 40.7% chlorpyrifos EC is ≥7 days, 5% EC is ≥7 days, 1.8% EC for ≥ 7 days, 75% chlorothalonil wettable EC for ≥ 10 days, while others such as dichlorvos, phoxim, cypermethrin, deltamethrin, fenpropathrin, copper citrate, cis-cypermethrin Safety intervals such as pesticides are all within 7 days.
Third, the selection of pollution-free new pesticides. Such pesticides are harmless to people, animals and the environment. Such as plant-sourced pesticides such as veratridine, matrine, azadirachtin, etc.; bio-source pesticides such as arbutin, agricultural streptomycin, neomycin, and Jinggangmycin. There are also fungicides such as root rot that can prevent chronic diseases such as bacterial wilt and blight, and bacteriostatic preparations that use Bacillus thuringiensis, bacillus bacillus, Beauveria bassiana, etc. for many years.
Fourth, pesticide dosage. When pesticides are used, it is easy to produce phytotoxicity, and the effect is not good. Therefore, pesticides should be used at the recommended dosage on the instructions, and they cannot be increased or decreased at will. There are two situations in which the dosage is excessive: the number of times of use is too large and the concentration is too large. For example, the maximum number of times of application and the maximum dosage of each time in cabbage and Chinese cabbage are: (the following pesticide formulations are the same as above) and dichlorvos is 5 times. And 200 ml/mu, phoxim 3 and 100 ml/mu, trichlorfon 5 and 100 g/mu, cis-cypermethrin 3 and 20 ml/mu, anti-influenza 3 and 30 Grams/acre, chlorpyrifos for 3 and 75 ml/mu, Qidane for 1 and 50 ml/mu, chlorothalonil for 3 and 120 g/mu, copper chloride for 4 times and 300 ml /mu.
Fifth, use more natural enemies. Protect natural enemies such as ladybugs, spiders and grasshoppers, create an environment conducive to the survival of natural enemies, and release predators, parasitic wasps, and Trichogramma and other natural enemies.
Sixth, no industrial wastewater, domestic sewage, these polluted water have metal ions, poisons, bacteria, eggs and so on.
Non-pollution green vegetable application method
The production of pollution-free vegetables is the trend of food safety. According to the core meaning of pollution-free vegetables and green food vegetables, we can attribute the main sources of harmful substances in vegetable products to two: First, fertilizer is a medicine—the fertilizer is the source of nitrate and nitrite in vegetables. Pesticides are the source of pesticides in vegetables. Therefore, we must strictly control the application of fertilizer and pesticide application.