Greenhouse Citron Cultivation Technology

1 Timely shed

Generally, there is a period of physiological dormancy after the fall of the scented citron. If the colonization is earlier, then the shed will be held in the evening. Otherwise, the pods will not germinate and grow well. If the planting is carried out after late November, the shelter will be placed immediately after planting. At this time, the axillary buds have been released and the temperature should be raised immediately to promote germination.

2 temperature and humidity adjustment

After the citron seedlings are transplanted into the greenhouse, they may not be warmed for several days, so that the temperature can be maintained at 15°C in order to ease the seedlings. 8 to 10 days after the start of heating, so that the temperature within the shed control at 18 ~ 24 °C during the day, control at 12 ~ 14 °C at night, the ground temperature maintained at 15 °C above. At the same time should maintain a high soil moisture, after planting irrigated, so that the relative humidity of air is maintained at about 85%, the humidity is too low, easy to make buds atrophy, slow growth. Humidity is too high, easy to reduce the greenhouse temperature, axillary bud germination slow. If the humidity is not enough, you can spray the branches at noon on sunny days. When the humidity is too high, it should be ventilated and ventilated at noon on sunny days.

3 hormone treatment

After planting the seedlings, four to five dormant buds of the upper seedlings of the toon seedlings are smeared with the raw liquid of extracting the sticks, and generally 100 to 120 buds are applied per 1 g of the medicament, and the buds are germinated after 7 to 9 days after the application, and the yield can be increased by 10% to 20 %.

4 Timely harvest buds

Under optimum temperature, the top buds can germinate after 40 to 50 days in the buckle shed. When the buds grow to 15 to 20 cm, and they are harvested when the coloring is good, the harvesting will affect the yield as early as possible, and the axillary buds will age later and the quality will decrease. The terminal buds can be harvested and harvested. When the lateral buds are harvested, one or two leaves of the base can be left as the auxiliary leaves. The harvesting should be carried out in the morning and at night. Generally, harvesting takes place every 7 to 10 days for a total of 4 to 5 times. Every axillary bud 2 ~ 3d before harvest to be foliar spray fertilizer, after the start of picking buds topdressing watering more than 10 times, each with ammonium nitrate 300kg/hm2. In general, until mid-April, the greenhouse shall be seeded with pods, that is, from 10 to 15 cm above the ground, the seedlings will be cut back. The height of the seedlings remaining in the year is 10 cm, and the seedling height of 2 years or more will be about 15 cm, and then transplanted to open cultivation. The spacing between the rows was 30cm and 40cm, and the density was about 90,000 plants/hm2. After transplanting enough water, timely cultivating, budding germination, choose to leave a strong bud, training into the next year seedlings.

5 Pest control

Toona sinensis has fewer pests and diseases, and it is not necessary to spray medicine during the budding period. Seedling stage susceptible to blight, damping-off, root rot, etc., can be sprayed with 25% carbendazim WP 600 times, or with 1% double effect Ling 500 ~ 700 times Irrigation, every other 7d irrigated once, with irrigation 2 to 3 times. The pests of Toona sinensis have tortoiseshell caterpillars, hornbills, and moths, etc., and 90% trichlorfon crystal 800 times solution or 40% dimethoate EC 150 times can be used for prevention and control. Before planting, if it is found to be harmful to the tea plant, 15% daphthol cream 1500-2000 times should be sprayed for prevention and treatment.

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