A, Zucchini seedlings standard.
The zucchini is a thermophilic vegetable. In the winter and spring seasons, it is necessary to take measures to keep warm and increase the temperature. The seedling age is about 30 days, the plant height is 15-20 cm, the stems are green, the internodes are short, the leaves are green on the large surface, and the four-leaves are one before planting. The roots are well developed and the roots are absorbed. There are no pests and mechanical damage.
Second, select good varieties.
The early maturing varieties of zucchini include the early green generation, a nest of monkeys, the Atai generation, the special early No.1, the small white peel and the mosaic leaves of zucchini, etc.; the mid-maturing varieties have the long vine squash. Usually in the early spring season, the cultivation in greenhouses (rooms) is more efficient.
Third, the seed germination germination.
Before sowing, unpicked, full-grained zucchini seeds are exposed to sunlight for several hours, then placed in water at 50-55°C, stirred for 15 minutes, then soaked in room temperature for 6-8 hours, then rinsed and used again. Wash with water, put it in moisturizing and pregerminating at 25-30°C, and rinse with water once every 6 hours, and germinate after 2-3 days.
Fourth, preparation of nutritious bed soil.
6 parts of farmland soil and 4 parts of decomposed cyclamen were evenly mixed after sieving, plus 15 kg of chicken manure per square meter of bed soil and 5,000 g of compound fertilizer, and were evenly mixed for use.
Fifth, suitable for planting seedlings.
The squash are mostly cultivated by means of seedlings, and the soil temperature for planting must be above 12°C. Produced in plastic greenhouses, generally in the 2-3 months of nursery, seedling period of 30-40 days; in the open field production, generally in March-March breeding, seedling period 25-30 days. The sowing amount is 400-500 grams per 667 square meters. As the zucchini grows fast and requires a large area of ​​nutrition, it is best to use a nutritional seedling. The bed soil is loaded into a nutritional bowl or in a paper bag. It is also possible to lay the bed soil 10 centimeters thick in a seedbed, and then drench it with warm water, and plan a 1010 cm nutritious soil before planting. Within each nutrient bowl or earth, put one seed of germinating seeds in a flat place with the buds facing downward, and then cover with 2 cm thick fine soil, then cover the plastic film to keep it moist and moist. If grafted seedlings are used, the black root pumpkin is mostly used for its rootstocks.
Six, fine management of seedlings.
1 temperature and humidity management. Before the emergence of the seedlings of the squash, keep the soil temperature of the nursery bed at 15-18°C and keep the temperature at 28°C. Normally, the seedlings can emerge after 3-5 days. After emergence, remove the plastic film, reduce the temperature and humidity to prevent leggy and control the temperature at 20-25 °C. To prevent leggy, the night temperature can be controlled at around 15°C. In the conditions of high temperature and humidity, it is easy to cause leggy, slender stems, long internodes, thin leaves and light green; in the condition of low temperature and drought, it is easy to form stiff seedlings, short stature, short internodes, small and dark green leaves, plant stops. Long, underdeveloped roots.
2 prevent wearing caps. If hats are found, cover with fine soil again or remove caps manually.
3 full illumination. Zucchini is a light plant and it should be fully illuminated during the entire seedling period.
4 spray ethephon. In order to promote the female flower, spray 40% ethephon 2500 times in the 3 leaf stage. Before planting, it must meet the standards of strong seedlings.
Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone
Green and functional cosmetics are more and more favored by people. As plant extracts are more and more widely used in cosmetics, more and more varieties are used. Compared with traditional cosmetics, cosmetics prepared with plant extracts as active ingredients have many advantages, such as overcoming the shortcoming of traditional cosmetics relying on chemical composite products, and making the safety of products higher; Natural components are more easily absorbed by the skin, making the effect of the product more significant; Functional more prominent, etc. Therefore, the application of plant extracts in cosmetics is the inevitable trend of market development. In addition, plant extracts have many obvious advantages, such as wide source and targeted mechanism of action. Especially with the progress of modern extraction technology and analysis technology, its effective ingredients and related mechanisms of action have been gradually discovered and confirmed by people, in the sunscreen, whitening, anti-aging, sterilization and other aspects of significant efficacy, can be widely used in various cosmetics. Therefore, the application prospect of plant extracts in cosmetics is very broad.
Cosmetics Raw Material,Lophatherum Gracile Extract,Natural Rhodiola Crenulata Extract,Lower Price Sedum Rosea Extract
Fufeng Sinuote Biotechnology Co.,Ltd. , https://www.sntextract.com