A, water floating seedling
Also called float seedling.Porous polyethylene foam is used as well as the carrier, will play a good cotton seedling dish in nutrient solution water bed seedling raising a practical technology.
1. The location to build pool
Choose lee xiangyang, convenient management of land, according to the seedbed width 1.2 m, 0.2 m deep, every 667 m2 cotton seedling bed is about 2.1 m long, dig good bed pool, do consolidate all round, bed flat, level, pick up a stone, hard objects, etc., to prevent cut film, causing leakage of nutrient solution.
2. The flat membrane
Seedbed all around and the bottom water wet first, make it soft bed soil, with 0.01 mm thick film laying around the house and in the bottom of a bed, make the film close to earth, thin-film extending coverage to the edge of the 15 cm.To prevent membrane membrane perforation, and eliminate the film under air, there are air bubbles to membrane, such as leakage need to change film, potting soil compaction after testing the waters.
3. Preparation of nutrient solution
Each bag seedling fertilizer can be prepared from 150 ~ 200 kg of nutrient solution, fertile eight dish, 1600 strains of cotton seedlings.5 kg per bag seedling weight against the water first with the mother liquor, in a pool of seedling, sufficient water, add after ensure fertilizer dissolves, stir to mix well.
4. The base plate
Choose efficient mixing matrix and matrix uniformly wet with water, water knead dough by hand, fingers not running water is advisable.Into matrix evenly on seedling dish, surface flat and shake of seedling dish, make the matrix tight, down to 1-1.5 cm away from the disk, to ensure the full uniform, up and down tight, easy to sow.The general matrix for each bag can carry eight seedling plate.
Seeds 5.
Generally at the end of April to early may, the water temperature is stable in 17 ℃ above can sow seeds.Bask in the soil before sowing of 3 ~ 4 days, then with about 30 ℃ warm water soaked with 8 ~ 10 hours, select the healthy child seeding.Conditional can be under 30 ℃ temperature insulation sprouting, for cotton seed sowing the thief.Every hole 1 seed, species (bud) pointed down, is the hole bottom holes, it is advisable to sowing depth to 1-1.5 cm, after planting cover to seedling holes with substrate surface flush, spray 50% carbendazim 2000 times liquid filling water disinfection.
6. Seedbed management
After sowing, seedling dish on the indoor heat preservation can be moisture emergence, stay good seedling emergence in the pool of seedling, and two vertical horizontal arranged alternately, the gap between plate and plate must be reserved, nursery seedling insulated tank using small tunnel or greenhouses.Generally it does not rain weather, when the temperature above 20 ℃, only in the morning and evening to cover (18:30 - at 7:30 in the morning), and rainy days must cover membrane, but will open on both ends of the tunnel, all round opening tuyere, do the air circulation.After waiting for the 2 slices of cotton seedling leaf, can miao jie membrane lian, sunny days can be refined miao will leave nutrient solution as well.Cold snap hit should cover film heat preservation, or will seedling dish moved to indoor.To ensure seedling, according to the cotton seedling growth combined with spraying shrink festival amine, as appropriate, to prevent and control diseases and pests control, prevent high seedlings.
7. Timely transplanting
Heart 2 heart leaves 1 to 3 leaf 1 as the best transplanting age of seedling.Transplanting had better choose cloudy day, sunny day in the morning or afternoon 4 when after transplanting.Removed when transplanting seedling dish, hand of cotton seedling stem base, gently pull seedlings, try to keep the root system integrity.Transplanting with bed out small hoe or spatula directly transplanting, guarantee the roots stretch, seedlings upright.After transplanting timely watering the root water and living water.
