Insect net covering the cultivation of leaf vegetables supporting measures
1. Pastoral clean-up: Cleanup of plant residues and weeds prior to sowing and reduce the number of worms. Remove weeds from inside and outside of the web foot and around them to prevent eggs produced by pests from falling into the net and hatching hazards.
2, soil disinfection: cover the net before deep-turning the soil, before planting with chlorpyrifos or dichlorvos on the surface spray, kill the pests in the soil.
3. Variety selection: cabbage, summer (autumn) cabbage, summer (autumn) cabbage, spinach, lettuce, parsley, cauliflower, radish, leeks, onions, garlic and other vegetables exposed in summer and autumn, more pests and diseases, especially suitable to cover the insect network Cultivation. The humidity in the greenhouse is slightly greater than the exposed area, and the summer temperature is 2-4°C higher than the outside world. It is necessary to use vegetable varieties that are resistant to heat, moisture, and disease. Vegetables in the same net shed should be of the same variety and variety, and it is best to plant them at the same time to facilitate management and prevent the spread of pests and diseases.
4. Control of wet drainage: In summer, the vegetables in the net shelf are susceptible to high temperature and high humidity. In areas with high groundwater level and high rainfall, deep ditch sorghum planting is required to facilitate drainage and maintain proper humidity, which is not conducive to pests and diseases. The environment that occurred.
5, full coverage: At present, more than the application of insect nets in summer and autumn.
6. Shed Management: Shelving should be strong and the column should not be too small. It is required to be windproof and snow resistant. The area of ​​the net shed is 1335 -2670 square meters, so as to avoid large areas of damage caused by strong winds. Personnel are required to close the door, often check the insect nets for cracks and make timely repairs. The leaves and insect nets must be kept at a certain distance to prevent pests from producing eggs on the leaves. Vegetables will attract pests to lay eggs on the insect-proof nets. Newly hatched larvae can easily infiltrate into the net, and insect nets should be cleaned frequently.
7. Pest management: According to the prevention and control targets and distribution, minimize the use of drugs and control the use of drugs during the best period of prevention and treatment. Biopesticides are preferred, selective use of chemical pesticides, such as Bt, avermectin, pyrethroids, insect hormones, and a few organophosphorus pesticides, to strictly control the safety intervals of various pesticides. You can also use natural enemies to eliminate pests in the net shed, such as ladybugs, grasshoppers, parasitic bees, etc.
Lab devices are suited for quickly testing medical samples. When the patient sample can be examined directly in the practice laboratory, then the benefit of this practice is considerable time savings. Our assortment encompasses analysis devices for the most used, relevant parameters. In addition to the specific analysis devices, you will also find a large range of lab technology, such as Distilling Apparatus, Water Bath, Digital Oil Bath and Magnetic Hot Plate.
Additionally, we supply further laboratory consumable products like Disposable Test tubes, Pipette Tips, Vacuum Blood Collection Tube to complete your laboratory project.
Lab Electronic Machines,Electronic Lab,Electronics Lab,Electronic Laboratory
NINGBO YINGMED MEDICAL INSTRUMENTS CO.,LTD , https://www.chinayingmed.com