First, choose a good plot

The vegetable nursery bed should be selected for landform with high dryness, convenient irrigation and drainage, fertile soil, and good permeability. It is best to avoid plot breeding for continuous crops or similar vegetables that have been planted on the plot to prevent soil-borne diseases and avoid pests in the ground. Severe land plots have occurred. Full maturity farmyard fertilizers should be applied as base fertilizers. According to the cultivated varieties, appropriate amount of compound fertilizer and a small amount of trace fertilizers should be used, and shallow plowing should be performed once.

Second, prevent high temperatures

For vegetable seeds that are difficult to germinate, such as lettuce and celery, the seeds must be treated before sowing. Soak the seeds for 8 hours and wrap them in wet gauze, put them in deep wells or in cold place to germinate them, or treat them at low temperature. Celery is treated at 2～5°C for 48 hours, and lettuce is treated at about 5°C for 72 hours to promote germination and increase. Germination rate. You can also sprinkle some crushed wheat straw on the seedbed or cover the seedbed with a shade net.

Third, prevent virus disease

Viruses in vegetables are severe under high temperature conditions. In addition to the above-mentioned nursery facilities, 10% trisodium phosphate solution can also be used to treat eggplant and tomato seeds for 10 minutes, and then rinse with clean water. Vaccine can also be used to inoculate tomatoes, select antiviral varieties, use nylon net yarn to prevent warts, use silver-gray membranes to avoid warts, and timely prevent dental caries and other technical measures to prevent the occurrence of viral diseases.

Fourth, prevent heavy rain

Sandy loam soils should be selected in storm-prone areas. Drainage should be smooth around the seedbeds. Temporary coverings such as old sheds should be used to cover rainstorms. After sowing, rainstorms should occur. After the rain, cultivators should lightly plough once to prevent picking on the salted surface and affect seedling emergence.

V. Prevention of drought

The foot water was poured first, then soil preparation, sowing, sowing and soil suppression. For vegetable seeds that are weak in germination, such as alfalfa, lettuce and celery, they can be covered with weeds, corn leaves, newspapers, and other shades (removed in time after emergence). When the seedbed is in drought, sprayers are used in the morning or evening. Spray water on the seedbed to increase the humidity of the surface, which will help the seed germinate.

Sixth, prevention of protege

Summer seedlings can easily cause leggy seedlings and may be sprayed with plant regulators to control their growth. Timely seedlings or seedlings, for cucumber, tomato can be sprayed with ethephon to control leggy shoots, tomatoes in the 5 leaf, 7 leaf stage with 40% to 50% of chlorpyrifos 1000 times each spray, can make seedlings stout, leaves Dark green color, thick leaves, promote flower bud differentiation, increase production.

Ophthalmology Scanner

Ophthalmology Scanner,Ophthalmic Equipment,Eye Ultrasound Scanner,Ophthalmic Windows Based Scanner

Guangzhou Sonostar Technologies Co., Limited , https://www.sonoeye.com