Overwintering eggplant seedlings in greenhouse

The overwintering winter eggplant cultivation in solar greenhouses is generally planted in early September, with seedlings aged 50 to 60 days, planted in late October, harvested in early December, and pulled in June to July in the second year. It is a key to solve the severe winter and early spring market supply and realize the key to supply of eggplant anniversary. General mu production of 4000 to 6000 kg.

First, applicable varieties

The cultivation of overwintering eggplants in solar greenhouses is mainly based on local eating habits. The selection of early-maturing varieties that are more resistant to low temperatures and weak light, stronger in disease resistance, less open plants, suitable for dense planting, fast fruit development, and good coloring It is necessary to consider varieties with thicker skin, resistant to storage and transportation, resistance to Brownie disease, and stronger ability to fight M. elegans. Such as: fast round eggplant, Fengyan 2nd, round miscellaneous No. 2, Solanza No. 8 and so on.

Second, nursery

Overwintering quail eggplant in order to enhance cold resistance and increase eggplant resistance to Verticillium wilt, bacterial wilt, root knot nematode disease, and root rot, generally adopt grafted cultivation. Rootstocks can be used Torurubam, C. oleifera (CRP) or red eggplant, of which Tolubemu has a strong affinity for grafting, growth potential is obviously enhanced, and most of the production is applied. The root stocks of Toubamu Mu are 10~15 grams, and the scion varieties are 30~40 grams.

Grafting is generally used for grafting. When the rootstock, scion 5 to 7 true leaves when grafting suitable time for the middle and late September. On the afternoon of the grafting day, 800,000 units of green and streptomycin were sprayed on 15 kilograms of water, or sprayed with 800 to 1000 times of chlorothalonil to eliminate the source of infection. Wells were removed. The rootstock seedlings are properly controlled before grafting to prevent brittleness of the embryonic axis during grafting. Count up from the base of the rootstock, leave 2 true leaves, and traverse the stem with a blade, then cut a 0.7-0.8 cm deep incision along the stem midline from the incision, and then select a scion similar in thickness to the rootstock. Seedlings, numbered from the top, under the second or third true leaf, cut the stem into two wedges with a bevel 0.7-0.8 cm long, and insert it into the cut of the rootstock. Align the skins of the scion and rootstock, clip them with a grafting clip and place them in a small shed.

After grafting, the seedlings were placed on a seedbed and drenched. Cover a small shed, heat preservation and moisturizing, appropriate shading, temperature during the first 5 days during the day 24 °C ~ 26 °C, night 18 °C ~ 20 °C, relative humidity within the shed more than 90%, 5 days after the gradual reduction of humidity, air humidity 80%, seedlings Appropriate to see the light, ventilation, 8 days after the relative humidity reached 70%, 10 days after removing the small shed, remove the graft clip, transferred to normal management. Rootstock grows very strongly. Branches are often sprouted below the grafting interface and must be removed in time to avoid consumption of nutrients.

If you grow your own roots, it is best to use seedlings or plugs to protect the roots. If it is necessary to divide the seedlings, the seedlings can be raised in the open field. When the seedlings are divided, they are transferred to the greenhouse and the seedlings are transplanted into the nutrition bowl. In the open season, seedlings should also be erected with arches and covered with rain-proof film. The focus is to strengthen the insulation at night. Pay attention to rain and shade in the early stage of nursery, and keep warm in the night during the late period. In high latitudes or high-cold areas, seedlings must be grown in greenhouses or in Yangshuo, and it is particularly important to keep them warm.

III. Preparation for soil preparation, fertilization, cultivation, and planting

15 days before planting, sulfur powder 1.5-2.5 kg per mu or dichlorvos 250 ml, mixed with sawdust and ignited, closed 24-hour fumigation. It is also possible to confine greenhouses for a week at a high temperature, which can effectively kill pathogens and eggs in the soil. Deduction of membranes in advance, generally from late September to early October. Planting the cold-proof soil outside the wall before and after planting and filling the cold-proof ditch outside the foot before freezing. This is an important measure for the cultivation of this quail eggplant in the colder regions of the north.

Overwintering pods are long-term cultivation and must be basal. In general, 10,000 kg of grass manure is prepared and deep-turned; decomposed chicken manure 2 and diammonium phosphate 30-50 kg are used for fertilization. After leveling, press the widthwise row 90 centimeters and the narrow row 70 centimeters to open the north-south direction of planting trenches. The width of the trenches will be 40-50 centimeters and the depth of the trenches will be 30 centimeters. The fine fertilizer will be applied deep into the trench and mixed thoroughly with the soil. Water in the ditch. After water infiltration, it can be used to fill the ditch with a height of 20 cm and a width of 60 cm. Leave a 30cm walkway in the wide line and a 10cm water ditch in the narrow line. The above work should be completed about 7 to 10 days before planting.

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