(1) Characteristics and requirements for environmental conditions: Chinese cabbage is a two-year-old favorite vegetable. Seeds can germinate in the range of 4-35°C, and the optimum temperature for germination is 18-22°C. From seeding to emergence 2-3 days, seed germination requires light, so the seeding cannot be too deep. The Chinese cabbage seedlings have a short dormancy after the seeds are harvested, usually disappear within 2-3 months, and are effectively treated with low-temperature treatment, gibberellin and the like to promote seed germination. The optimal temperature for seedling growth is 22-25°C, and the growth is stopped below 5°C. Low temperature 3-13 °C can promote flower bud differentiation cabbage cabbage. And the lower the temperature, the earlier the differentiation. Cabbage cabbage grows well when the soil moisture is 80% to 90% and the relative humidity is 65% to 80%. The suitable soil pH is 5.5-7.0.
(2) The main points of seedling raising techniques: Chinese cabbage is mainly cultivated in autumn. According to different ripeness, the seeding time is in summer or early autumn. See Table 34 for the main cultivation season and seeding period. The cabbage seedlings are shaded and cooled. At the same time, we must strengthen mulch measures. Seeding rate of 50-100 grams per acre, 15-25 days seedling period, seedlings have 3-8 true leaves can be planted. In the Yangtze River basin and South China, it can also be cultivated in spring. The sowing time is about from February to early March. The spring seedlings must strictly control the temperature to prevent the seedlings from convulsing through vernalization, generally not lower than 10°C. In order to prevent the occurrence of diseases, cabbage cabbage seedlings should be noted: 1) Control locusts in time, and conditions should be used to isolate the seedlings with gauze to prevent worms from transmitting virus diseases. 8 The Chinese knot cabbage has a weak root system, which is not conducive to future growth after root injury, and it is also susceptible to soft rot. Therefore, it is necessary to protect the root system from damage. 2 In order to control the pests, the major pests, including cabbage caterpillars, small tigers, earthworms, and locusts, as well as the damage of rapeseed mealworms and diamondback moth, can be controlled by chemicals.
(2) The main points of seedling raising techniques: Chinese cabbage is mainly cultivated in autumn. According to different ripeness, the seeding time is in summer or early autumn. See Table 34 for the main cultivation season and seeding period. The cabbage seedlings are shaded and cooled. At the same time, we must strengthen mulch measures. Seeding rate of 50-100 grams per acre, 15-25 days seedling period, seedlings have 3-8 true leaves can be planted. In the Yangtze River basin and South China, it can also be cultivated in spring. The sowing time is about from February to early March. The spring seedlings must strictly control the temperature to prevent the seedlings from convulsing through vernalization, generally not lower than 10°C. In order to prevent the occurrence of diseases, cabbage cabbage seedlings should be noted: 1) Control locusts in time, and conditions should be used to isolate the seedlings with gauze to prevent worms from transmitting virus diseases. 8 The Chinese knot cabbage has a weak root system, which is not conducive to future growth after root injury, and it is also susceptible to soft rot. Therefore, it is necessary to protect the root system from damage. 2 In order to control the pests, the major pests, including cabbage caterpillars, small tigers, earthworms, and locusts, as well as the damage of rapeseed mealworms and diamondback moth, can be controlled by chemicals.
The fresh and natural taste is always attractive to people. When you are confused, drowsy and need to relax, if you take a few minutes to feel the aroma of the fruit, the situation will be completely different. As you know, blueberry flavor has always been popular with people. Therefore, we have developed and produced blueberry-flavored cigarette substitutes to help people feel the comfort of nature anytime, anywhere.
Green Smoke Cartridges,Blueberry Flavor E-Cigarette,Blueberry Plant Extracts Cigarette,Blueberry E-Cigarette Alternative
Dongguan Vanilla Bioengineering Co., Ltd. , https://www.healthecigarette.de