At noon, when the bed temperature is over 21 ℃, the edge of the film should be uncovered(sowing tray), ventilated and cooled, so as to prevent the seed potato from black center due to high temperature and affect the emergence of seedlings. In order to make each layer of seed potatoes receive gentle sprouting, turn the seed potatoes up and down once every 3-4 days(18 cell propagation trays wholesale); autumn potatoes are sown at the beginning of summer, the second step is to uncover the film and sun the seeds.
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In the north of our country, the seed potatoes selected are stacked in 5-6 layers in the pit bed and covered with plastic film(plant germination trays). The distance between the film and the seed potatoes is more than 50 cm to prevent scalding. To prevent frost damage, cover the film with grass at night, and remove the grass after sunrise in the morning(36 cell propagation trays wholesale). In the process of germination, the temperature should be kept at 18 ~ 20 ℃, not more than 25 ℃. It can be divided into two parts.(cheapest thermoformed pots wholesale suppliers india)
The best fertilizer for top dressing is nitrogen, phosphorus and potassium compound fertilizer(seed starting tray wholesale). When all the seed potatoes are forced to sprout the size of sorghum grain, the seed can be exposed to the sun. Less seed potatoes can be dried in the bed, and more seed potatoes can be dried out of the bed. In general, the sun seed lasts for 8-10 days, and turns over for 2-3 times in the middle to make all the buds sensitive evenly(plant start trays wholesale). When the buds are purple green and root protuberances appear at the base, the sun seed ends.
The method of germination and seed drying in the garden is(plastic flower pots manufacturers): lay a thin layer of hay in the garden or the open space with walls, and lay the selected seed potatoes on it about 25 days before sowing, with a thickness of about 20cm, and cover with a layer of 30cm thick straw to prevent freezing(4 cell propagation trays wholesale). Generally, 10 a.m. - 5 p.m. in the daytime, uncover the seeds and cover them with grass when they are cold. Second, the storage method of the potato is improper.
After autumn sowing, the spring potatoes harvested in that year are late in emergence and uneven in emergence(plant cell trays), so that the season is delayed, the growth period is shortened and the yield is not high. The main reasons are as follows. One is the effect of dormancy. Some crops can't germinate immediately after their seeds are mature, because there is a certain dormancy period(6 cell propagation trays wholesale). In this way, the buds are continuously stimulated for 7-8 days.(cheapest thermoformed pots wholesale suppliers india)
After harvest, the spring potato used for autumn sowing must be spread in the place of ventilation and light transmission(6 cell plant trays). In order to make the temperature and light sensitive even, it is necessary to turn over every 3-4 days. After about 20 days, the potato pieces can be seeded when all the green buds with the size of soybean grain appear(8 cell propagation trays wholesale). The depth is 50 cm, the width is 1-1.3 m, and the length can be determined according to the amount of potatoes planted.
(cheapest thermoformed pots wholesale suppliers india)The first step is to dig a pit bed 20 days before sowing in a place with high terrain and wind to the sun(50 cell plug trays). Spring potatoes in Harvest from late May to early June, when the dormancy period of spring potatoes is generally not over. Potato tubers also have this dormancy characteristic, and the dormancy period usually lasts for 3-4 months(12 cell propagation trays wholesale). There are mainly two kinds: one is the germination and sunning seeds in the pit bed, the other is the germination and sunning seeds in the garden.