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Hydroponics technology shallot

Author:xc    newsCopyFrom:Original Site    Hits:1068    UpdateTime:2010/11/4

  Chive is the general public one of favorite vegetables, spices.

  Ma hydroponic gardening facilities for field use, since 1995, growing chives for 2 years, to achieve better efficiency, the water culture technique shallot now described below.

  1 with soil planting seedling varieties Shengxian shallot, because of its less developed root system, leaf size, growth rate was slower, so the seedling is longer, take a soil planting seedlings, is conducive to nurturing seedlings, suitable for spring sowing 3 early April to 4 months late autumn early July to 10 later this month.

  2 A hydroponic soilless planting management approach shallot cultivation, planting of early spring, April 5 in late autumn, late August to 12 months early. The best growing season in spring onion 4 to 5 months, the fall in the September 11 mid-early May.

  2.1 When the onion seedling planting means there are 2 to 3 leaves, plant height 10 ~ 12cm, Ages 35 to 45 days, to colonization. 1 day before the lifter will be Water the seedbed, the soil root lifter after the wash, to minimize root injury. Hydroponics with Deep Flow Technology (DFT). Cultivation tank length 28 ~ 30m, width 1m, groove depth of about 10cm, bottom polystyrene plates laying (EPS board), floor thickness 1.25cm, floor covering black film of nutrient solution on the leakage of nutrient solution depth of about 6 ~ 8cm , then covered with EPS lid on it, cover length 1.5m, width 1.0m, thickness 2.5cm. Cover the hole spacing may be different. Appropriate density of shallot 8cm square, planting hole diameter of 2.6cm, top diameter put 2.5cm, 4.0cm high small plastic bowl, each bowl of onion planting three seedlings, 540 m2 aluminum greenhouse planting hole about 40,000, onion seedlings can be planted about 120,000. After planting the onion roots immersed in nutrient solution.

  2.2 The management of nutrient solution flow by deep cultivation scallions, 540 square meters of greenhouse equipped with a pump to mobilize 0.4 kilowatts for the liquid, 2 times a day for the fluid regularly, morning and afternoon and 1 times, each time for the liquid 1 to 2 hours. Onion 1 to 2 days after planting, the supply of water, without fertilizer. Nutrient solution for 3 days, a unit of fertilizer nutrient solution 4 tons of water, named EC values of nutrient solution maintained at 0.9 ~ 1.0mS/cm, pH value of 6.0 ~ 6.5. To promote early live trees, sunny case of strong sunlight, the day after planting can cover 1 to 2 days shade net, thrown off the evening. 6 to 7 days after planting, nutrient solution concentration, a unit of fertilizer nutrient solution, add water 2 tons, the EC value reached 1.4 ~ 1.5mS/cm, pH value is adjusted to 6.0 to 6.5, nutrient solution temperature was controlled at 15 ~ 20 ℃, temperature in the greenhouse can be switch skylights, doors and side window regulator, named the indoor temperature during the day and not more than 30 ℃, 13 ~ 15 ℃ at night between the shallot in general no pest infestation is no need for pesticides.

  3 harvested in the appropriate temperature, chives grow rapidly. 50 ~ 60 days after planting to harvest. Spring water culture, 6 to 7 months can be harvested in autumn water culture, has been available from mid-September to next February harvest. When the onion plant height 30 ~ 40cm, stem diameter can be harvested when the 0.3 ~ 0.5cm, 540 square meters can produce about 500 kg, high up to 800 kilograms, soilless cultivation of onion, yellow leaves less moisture adequate good quality. If the use of continuous cultivation of annual greenhouse shallot, spring crop can be harvested 2 to 3, 2 or 3 crop in autumn, the annual crop harvest 4 to 5, 540 square meters of greenhouse annual output of up to 2000 to 2500 kg, the output value of 6000 ~ 7,000 yuan.