When will tomato seedlings be planted?
Spring tomato seedlings are generally planted in February, autumn and winter tomato seedlings are generally planted from July to August, winter and spring tomato seedlings are planted from November to early December, and overwintering seedlings are planted from mid to late September to October. Generally, seeds germinate 3-4 days after sowing, and can be transplanted when two or three true leaves grow.
Tomato sowing techniques:
1, soil preparation: tomato nutrient soil requires porosity of about 60%, ph6~7, available phosphorus more than 100mg / kg, available potassium more than 100mg / kg, available nitrogen more than 150mg / kg, loose, fertilizer and water retention, and then evenly spread on the seeding bed.
2. Seed treatment: tomato seeds can be soaked in warm soup or trisodium phosphate. The seeds can be sowed directly after soaking, but it is best to accelerate germination and sowing. The seedlings emerge quickly and neatly after seed sowing, which is conducive to the cultivation of robust seedlings.
3. Sowing density: tomato seeds contain about 300 seeds per gram. According to the planting density, the amount of seeds used in every 6 mu of field is 20,30g, and the sowing bed can sow 10g per square meter. If the seed germination rate is less than 85%, the sowing rate should be increased appropriately.
4. Sowing time: the sowing time of tomato should be considered comprehensively according to planting season, climatic conditions, cultivation methods and other factors. Spring open-field cultivation in Beijing is usually sown from mid-February to early March. In autumn, open-field cultivation is sown from late July to early August to the south of the Yangtze River.
5. Sowing methods: tomatoes usually have sowing, strip sowing and on-demand sowing, and cover the soil immediately after sowing. Spread the soil evenly and thinly on the bed surface with 8 grams of carbendazim 50% wettable powder per square meter to prevent seedling collapse, and cover the seedling bed surface with plastic film in winter and spring.
The above is the introduction of when to plant tomato seedlings. I hope it will be helpful to you.
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Planting method of asparagus
Asparagus likes viscous and fertile soil, likes high temperature and humidity environment, and is not resistant to frost and cold. Soak the seeds in 50-60 warm water for 15-30 minutes before sowing, put them in a greenhouse to accelerate germination, and sow seeds when a large area begins to whiten. Reasonable close planting, its length
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Planting method of windbreak
Windbreak should be planted in fertile loose sandy loam, like warm weather, afraid of waterlogging, so to do a good job of drainage. In the germination of time to water more, after emergence to timely weeding and fertilization, in June to August need to be human manure urine, calcium superphosphate fertilizer twice
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