1. Preparation before nursery
(1) Nursery facilities
Winter and spring nursery should be carried out in a plastic greenhouse or a multi-span greenhouse. The indoor and outdoor sheds cover a membrane and a net. Lay a thick plastic film on the bed or set the nursery bedstead in the shed.
(2) plug
Use a 54 cm 28 cm, 32 hole (48) plug tray. When using old plug trays, clean, rinse, dry, and sterilize plug trays.
(3) Matrix
Self-growing organic substrate: Peat, vermiculite and perlite can be mixed in a ratio of 3:1:1, and an appropriate amount of compound fertilizer is added per cubic meter. One cubic meter of the base was added with carbendazim 50% WP 150 g or thiophanates 70% WP 150 g with mixing and disinfection. The water content of the prepared matrix is ​​about 65%, reaching the state of being held in a group and loosening. Commodity Matrix: A tray seedling substrate purchased from a substrate manufacturer.
2, loading and sowing
(1) Packing
Pour the prepared substrate into the plug tray, scrape it from the side of the plug tray to the other side with wooden planks, fill each hole with a matrix, put the 4-5 plug trays vertically, and place a top Empty plate, handcuffs pressed evenly and forcefully, and then put the tray neatly on the nursery bed, so that the boundaries of the various custas after the matrix plate is clearly visible.
(2) Seed processing
Put the seeds into warm water of 50-60°C, and continuously stir the seeds for 20 minutes. The temperature of the water drops to room temperature and the stirring is stopped. Then the water is soaked for 8-10 hours. The grains are rinsed, rinsed with water, and the water is filtered off. Germination temperature is controlled at about 25°C.
(3) sowing
When the germination seeds more than 70% dew can be sown. In the center of each hole, a depth of 0.5-1 cm is pressed, the seed is placed flat in the hole, one for each hole, and the seed is covered with a fine substrate. The plug tray is discharged to the seedbed or bed frame, and water is sprayed to seep out the water at the bottom of the plug tray. Then the plug tray is covered with a layer of plastic film, and a small shed is covered outside.
3, seedbed management
(1) Temperature management. Before emergence after sowing, the greenhouse was sealed to increase the temperature inside the shed and the seed was promoted as soon as possible. When 60% of the seed cotyledons are unearthed, the mulching film on the floating surface should be removed in time. At the same time, the plastic film on the doors and both sides of the greenhouse should be opened, and the temperature of the greenhouse should be reduced to 25-30°C. After the seedlings are ready to emerge, try to control the temperature at about 25°C during the day and 15-18°C at night. If the seedlings have “hats†when they are unearthed, they can be manually removed in the morning when the humidity is high and the seed shells are soft.
(2) Lighting management. Continuous low temperature, rain, and snow can be supplemented with light by means of light curtains and additional incandescent lights.
(3) Moisture management. In early spring, the weather is cloudy and the temperature and humidity are very different. When the weather is clear and the temperature is high, it is necessary to pay attention to timely replenishment. When the surface of the substrate is whitish, it needs replenishment. Every day, water is poured 1-2 times. When the cold wave invades and rains, it is necessary to strictly control the moisture and, depending on the circumstances, to avoid dripping or dripping. If every rain is long and clear, the temperature in the shed rises quickly, when the ground temperature is relatively low, the seedlings are prone to physiological water shortage, and the leaves wither. At this time, the leaf surface spray should be used to supplement the water, and proper shading should be used to remove the membrane. Cooling, alleviating wilting and prompting the seedlings to return to normal growth.
(4) Pest control. The main diseases and insect pests are damping-off, blight, and worms. Physical control: Yellow plate trapping kill aphids. A yellow sticky board or yellow slat (25 cm 4 O cm) is hung in the field, and a layer of engine oil is applied on the field, 30-40 pieces per mu. Medium and small sheds cover silver-gray mulch to repel aphids. Chemical control: Bleeding disease can be selected by spraying 500 times of mancozeb 500 times solution or 500 times spray of carbendazim; Bacterial wilt can be sprayed with 70% Dikeson 800 times liquid spray or 10% Liquicine 500 times spray; Aphids can be sprayed with 2.5% deltamethrin EC 2000-3000 spray or 10% Imidacloprid 2000-3000 spray.
4, hardening seedlings and transplanting
After the “two leaves and one heartâ€, attention should be paid to timely ventilation and light transmission to reduce the temperature and humidity in the shed. Gradually reduce the temperature of the seedbed 7-10 days before planting, and gradually open the film around the greenhouse, pay attention not to excessive when hardening the seedlings. After hardening seedlings should be promptly transplanted to the field, due to different growth and development characteristics of different melons and different environmental requirements, the appropriate seedling age requirements are also different. Specific as follows: 30-35 days of cucumber seedling age, 3-4 true leaves; 30-35 days of wax gourd seedling age, 3-4 true leaves; 20-25 days of pumpkin seedling age, 3-4 true leaves; Seedling age 20-25 days, 2-3 true leaves; loofah age 20-25 days, 2-3 true leaves.
China Amino Acid Suppliers
Here you can find the related products in Amino Acid, we are professional manufacturer of Amino acid. We focused on international export product development, production and sales. We have improved quality control processes of amino acid to ensure each export qualified product.
If you want to know more about the products in Amino Acid, please click the Product details to view parameters, models, pictures, prices and Other information about Amino Acid.
Whatever you are a group or individual, we will do our best to provide you with accurate and comprehensive message about Amino Acid!
BCAA,L-Serine, L-arginine,L-Citrulline,L-Lysine, glycine,Amino Acids
Xi'an Gawen Biotechnology Co., Ltd , https://www.ahualynbio.com