Before the cultivation of black bean seedlings, first of all, the seeds should be wind-selected, water-bleaching, eliminating mechanical rolling damage and insect damage, mold, too small seeds. Water bleaching should be gently scrubbed repeatedly by hand, repeatedly skimming impurities inferior beans, and then the black beans into the bamboo sieve to control the water can be.
Black bean seedling planting conditions
1, water conditions
Black bean seedling planting requires more water, reproductive period requires the least amount of water, flowering pods need the most water , pods . and in between during expansion.
2, temperature conditions
Black bean seedling planting temperature is very important, black beans are more temperature-loving, germination to be more than 18 degrees to be able to do, but then can not be more than 25 degrees, seedling to be 20-24 degrees between grow fast.
Black bean seedlings planting steps
1, land fertilization
Planting black bean seedlings, it is best to selected paddy fields deep plowing of the field once with a farm machine, will be left in the field of the previous crop of roots and weeds and other debris are removed. Then apply 800 pounds of organic fertilizer, 200 pounds of urea, and 70 pounds of calcium-magnesium-phosphorus compound fertilizer per acre, and then plow the field once more to turn the fertilizer into the ground.
2, sowing time
Black bean seedling planting to in the spring when the underground temperature rises to about 10 degrees, you can sow. Before sowing, wrap the seeds in a seed coating to improve the immunity of the seedlings once they emerge.
3, sowing method
Sowing, first the ridge plank pressure, and then in accordance with the distance of 15 cm - 20 cm per plant digging holes for sowing, each hole needs to be sown 3-4 black bean seedlings. After sowing, cover with 3cm-4cm thick fine soil, press it gently with a wooden board, and then water it 1 time.
Black bean seedlings high-yield management points
1, drainage and irrigation water management
Wanting black bean seedlings high-yield, it is necessary to black bean seedlings entered into the pod period, watering enough water, especially continuous drought. If you don't irrigate in time, it's easy for fruit drop to occur.
2, fertilizer management
In the black bean seedling just into the flowering time, per mu of field should be applied 10 kg -20 kg urea to promote the black bean growth. After entering the full bloom period, pursuing 80 pounds-90 pounds of urea per mu field to increase the number of pods.
3, plowing and weeding
In the black bean seedling complex leaves just grow out of the time to carry out a shallow plowing, at the same time will be in the field of weeds are removed. When the black bean seedling grows to 20 centimeters high, you need to carry out 1 time of mid-plowing and weeding, then you can increase the yield of black beans at harvest time.