Due to the influence of climate, the winter greenhouse fruit and vegetable production is rare. Generally, it is planted in February every year. The main production varieties are tomato, cucumber and beans. From the seedling age, the solar greenhouse in early spring is in early spring. The tomato is about to be planted. Therefore, we must do the appropriate preparation before seedlings.
First, the preparation of nursery sites
Winter vegetable seedlings are carried out in a greenhouse, and the greenhouse in which the seedlings are prepared is to be inspected before the seedlings are raised. First, pay attention to repairing the plastic film, and repair the damaged place in time to prevent the air from leaking and causing the indoor temperature to drop. The second is to adjust the cold-proof quilt, especially the use of the roller blind machine to be carefully adjusted, so that the cold-proof is freely retracted, preventing problems in the nursery process and affecting seedlings. The third is to add cold-proof cotton curtains on the greenhouse door to improve the effect of greenhouse cold insulation. The fourth is to prepare the cold-proof two-story curtain and the small-small arch shed, which is very important for thermal insulation in the cold winter. The fifth is to do a good job in greenhouse disinfection. Before planting seedlings, pay attention to doing a good job of indoor cleaning. It is necessary to clean up the dead leaves in the greenhouse in time to reduce the base of pathogenic bacteria and pests. Conditional disinfection technology can be used to reduce and avoid the occurrence of greenhouse vegetable diseases. For the old greenhouse, 500-1000 grams of sulfur fumigation is used per 1000 square meters, and the new greenhouse can use 200-300 grams of formaldehyde fumigation per 1000 square meters. Sixth, we must do a good job in ground leveling. The commonly used seedling raising method is to raise seedlings and nursery seedlings. When placing, we must ensure that the ground is flat. Otherwise, uneven watering will occur due to unevenness of the ground, resulting in roots or diseases. occur.
Second, the preparation of heating facilities
Winter vegetable seedlings are affected by the climate, and the nursery greenhouse needs heating facilities. Generally, there are two kinds of commonly used greenhouse heating facilities: First, the coal stove is heated, and it must be built before the seedlings are raised, and the test burns to ensure that there is no smoke in the room, so as to avoid the smoked seedlings caused by the smoke leakage during the nursery process, resulting in unnecessary Loss. The second is to warm the geothermal line. When using it, it should be noted that the electric leakage protection device must be installed when using the electric heating heating line. It is forbidden to turn the electric heating heating line into a loop and bundle the electric current test, otherwise the plastic skin will be softened due to heat concentration. Faults such as short-circuit of core wire, each geothermal wire has a fixed length and power. It is not allowed to be cut short and cut off. It should be evenly distributed during wiring. It should not overlap or cross. It should not accidentally damage the plastic skin, and it should not be knotted and used. Always operate the heating zone to cut off the power.
Third, the preparation of nursery nutrient soil
Before raising seedlings, the seedling nutrient soil should be prepared. Generally, the ratio of seedling soil is 5 parts of decomposed horse manure (pecochar), 3 parts of field soil, 1 part of Chenling ash, 1 part of compost, and 1 kg of compound fertilizer per cubic meter of nutrient soil. After sieving, mix well. In the absence of horse manure or peat, it can be replaced by decomposed crop straw. The ratio of nutrient soil is 5 parts of field, 3 parts of decomposed straw, and 2 parts of decomposed organic fertilizer. It is best to use the fertile sandy loam soil for three years. The field soil of the solanaceous fruits, melons and cruciferous vegetables has not been planted for three consecutive years. At the same time, we should understand the use of herbicides in the plots and use herbicides in the front and the top. The land in Trajin cannot be borrowed (usually 38% of Atrazine per 667 square meters is used in excess of 300 grams), and the plots using the herbicide imidazolidinic acid within three years are not available. earth. When picking up the soil, pay attention to the topsoil within 13-17 cm. In order to prevent soil-borne fungus-borne diseases and pest diseases, the bed soil can be disinfected. The commonly used disinfection treatment method is: adding 50% carbendazim WP 50g to each nutrient soil, 50% 30 grams of thiram double wettable powder, 90% of crystal trichlorfon 80 grams, the pesticide is first formulated into an aqueous solution, sprayed on the nutrient soil, mixed well and covered with plastic film, 2-3 days to kill Multiple pathogens and eggs in the soil.
The above is about the preparation of winter vegetable seedlings and pest prevention, for your reference, I hope to help everyone.
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