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Orchids are also called green flowers, a kind of kale, rich in nutrients and green in colour, and one of the most popular vegetables. West orchid cultivation is simple, long-term and short-lived, and is also a form of veggies with a semi-cool-resistant character, with two seasons a year, i. E. A cool spring and autumn phase. In order to improve the production and quality of broccoli, we begin with planting in due course and talk about nursery techniques。
I. Date of transmission
The higher the temperature, the faster the broccoli grows at 5-20 degrees. Seeds have the highest sprout temperature of 20-25°c and growth temperature of 15-20°c during the nursery period. The western blue flowers are very cold and heat-resistant, growing at 20-22°c during the lotus season, developing at 15-18°c, and having a softer quality when above 25°c, but are slow to grow at 5°c or below as long as they are not frozen。
The seed is sowed simply in accordance with the best temperature range required for seed sprouts, usually in early april. In order for the flower ball to grow using 15-25 degrees of favourable temperature. When temperature does not reach the temperature of the seedlings, use a yin or small archer early seedlings, when temperatures return to a suitable range of growth, move in time to mature the flower ball。
According to the production practice, in the early spring of february, luminous seedlings were introduced, which were about 40 days old, and planted in mid-april。
Ii. Selection of varieties
Varieties are a prerequisite for determining the maturity, productivity and quality of the broccoli, both early and late. Without good seed, the other conditions are no better and no high-quality foods are available。
In the spring, broccoli is grown and it is recommended that pre-cooked varieties that are resistant to cold, disease-resistant and low-temperature are selected, with orchid varieties with birth periods ranging from 90 to 100 days. One of the reference varieties is green broccoli, which is pre-established in mid-premature, with new varieties of broccoli used in spring and autumn, standing, compact, strong, antiviral, and black corruption. The main flower ball weighs more than 500 grams, with high production of spring seeds and significant economic benefits. 2 fortunes to broccoli, which are almost 75 days old after planting, are well-established species. It weighs about 400 grams, and cultivation is widespread. Anti-black disease, frost disease, soft disease. New green snow broccoli, medium and late, suitable for spring or autumn planting, harvested 80-85 days after planting. One ball weighs about 500 grams. The buds are well organized, and the cultivation is broadly adaptive, cold-resistant and resistant to frost。
Iii. Measures to foster seedlings
1. Slender bed preparation: owing to the unstable temperature between february and the planting period, it is important to maintain temperature during the nursery stage. The construction of a yangtze or small arch shed may be determined on the basis of the conditions of the home and the extent of the cultivation。
In order to be fully prepared, it is generally necessary to plant 23 square metres per acre in the field, approximately 3100-3200 seedlings. The bed soil is mixed with six fully decomposed soil fertilizers, which add 1 inch of compound fat per cubic metre of soil, and 50 per cent of the moistures are humid 8 grams to prevent disease in the nursery. This is an adequately prepared bed with sufficient and stable soil nutrients and is not easy to form seedlings. Fill the bed before planting。
2. Seeding
Seeds that will be packed will not be soaked directly into seedlings, followed by 0. 5 centimetres of fine soil, and a layer of cover on the surface of the ground, which is tight, pre-sprung and dominated by temperature protection, which will not be released and which, in case of bad weather, will also be covered with cold。
3. Sapbed management
(1) temperature regulation: the temperature of the inner membrane is maintained at 25-30 degrees before seed production, and when 60-70 per cent of the seed topsoil is released immediately, a layer of fine soil is covered and the seed is protected against fallout. The inner membrane temperature remains at 20-25 degrees. When the first leaf is flatened, the inner membrane temperature remains at 18-20 degrees in the daytime and not less than 10 degrees in the evening. After two real leaf saplings, the membrane temperature is between 18 and 22 degrees during the day and not less than 10 degrees at night。
(2) saplings: after two saplings, the seedlings are moved within a nutrient sap of 10 cm in diameter and water is poured to keep temperature at the above temperature。
(3) humidity: no water before seeding, no water after seeding, no water before seeding, no water when the bed is dry and can be filled with spray. The wetting process is followed by the wetting of the wetting of the bed in the membrane, which prevents excessive moisture and causes disease. 7 to 10 days before the planting, both cooling and wetting, increasing the capacity of the seedlings to adapt to the external environment。
The criteria for growing up are: six to eight blades of leaves, thickness, short embryos and symbiosis, thick leaves, dark colours, well-developed roots, slow seeding after planting。
