In agricultural production, pests are generally easier to find, easier to identify, and easier to control. Therefore, the relative damage is relatively small. However, in individual years, due to the migration of adults, coupled with more appropriate climatic conditions, there have also been years of serious insect damage, resulting in large losses for farmers. Therefore, the prevention and control of pests must not be taken lightly. How to do a good job of prevention and control of pests, farmers also have a set of methods, as long as the law of the occurrence of pest control, seize the key links for comprehensive prevention and control, the effect is also very significant. To master the law of occurrence of insects The key to the severity of insect pests is the source of insects, which determine the extent and amount of damage. The main sources of insects in our province are as follows: 1. In the plow layer where the soil is cultivated, some adults, larvae, cockroaches and nymphs live over winter. 2. Weeds and crops in the field The poles and branches of fruit trees are the main wintering sites for adults, larvae, pupa and eggs. 3, there is no fermentation of good fertilizer, pests, cockroaches, eggs and larvae. 4. The epidermis of seeds, eggs, larvae, insects and some adults in the seeds. 5. Adults, such as adults of tapeworms, armyworms and aphids, migrate to our province through the wind and currents, and are often the source of pests. To master the law of occurrence of pests The occurrence of pests is closely related to the environment. 1. Temperature: Generally, the pest activity temperature is 15°C or more, the optimum temperature is 26°C or so, and 38 to 45°C is the temperature for the suspension of breeding. If the temperature is too high or too low, the insects must die. 2. Humidity: Various pests have different humidity requirements, such as excessive soil moisture, affecting the development of locust eggs; Rice II and III pods, winter low temperature, low humidity, can not winter. 3, pests have different requirements for crops, such as monophagous pests, soybean borer only harm a soybean crop, other crops do not harm; Oligophagous pests such as cabbage caterpillar, only harm cruciferous plants such as cabbage; omnivorous pests For example, armyworm, aphids, and grasshoppers can eat hundreds of crops, so the damage is very serious and the food chain determines the amount of insects. 4. Biology: There are many natural enemies of pests in nature, such as birds, frogs, insects, fungi, etc., which have a certain inhibitory effect on the occurrence and reproduction of insect pests. To master the laws of pest control 1 Always go deep into the fields, observe carefully, and find that pests are early to start. It is necessary to treat early, rule small, and rule. 2 Comprehensive agricultural prevention and control, with emphasis on the soil, deep and ultra-deep antisepsis, so that the pests and eggs cannot be safely overwinter; the farmer's fertilizer must be decomposed to eliminate the pests, cockroaches and eggs in the manure; thoroughly remove field weeds before the spring plowing With section poles, do a good job of pruning trees, so that the overwhelming insects and cockroaches do not exist; scientific irrigation, drainage, can effectively control the underground pests. 3 To use quarantine seeds, seeds should be screened, air-dried, and mechanical seed dressing and chemical seed dressing. 4 Strengthen management, do a good job of changing crops, and control the harm of single-feed pests. Control the density of crops and enhance the ability of crops to resist pests. 5 Do a good job of chemical control. First, choose high-efficiency and low-toxic pesticides to kill pests. The second is to vigorously use biological fungi to exterminate insects. The third is to actively promote magnetic silicon fertilizers and biological vaccines (aminopolysaccharides) to increase crop resistance to insects and diseases. The fourth is using purple light, yellow sticky board and other methods to attract insects. 6 Grasp the key link to pest control. General insect damage is mainly adults and larvae, as long as the adult mating spawning period and before the larvae three orders in time to fight drugs, control effectiveness can be achieved with less. Anti Oxidation Cosmetic Ingredients Anti Oxidation Cosmetic Ingredients,Nmn Powder,Nmn Powder Pure,Nmn Pharmaceutical Grade Youth Biotech CO,. Ltd. , https://www.youtherb.com