The sweet pepper greenhouse is usually cultivated in the late autumn in June and is planted in early and late August. Harvesting begins in early October and ends in late mid-November. Harvested fruits in the late period can be stored for 1 to 2 months. The cornice market has higher prices and good economic returns.
1. Variety Selection The high temperature, strong light, and rainy conditions in the early growth stage of the cornice are not conducive to the growth of the seedlings and are prone to diseases and insect pests. Therefore, it is required to select varieties with strong disease resistance, good commercial fruits, and storage-resistance. Such as: Yan Yan 12, No. 13 Yan Yan, Yan Yan new No. 6, Yan Yan new No. 5, Yan Yan No. 10, Yan Yan No. 18, Xiang Yan No. 1 and other varieties.
Second, nursery facilities
In the south-central region of the province, seedlings are generally sown in late June. During the high-temperature and rainy season, nutrient pods or plug-in mulching methods should be used. Nursery farms should choose high-dry terrain and well-drained land to build rainproof awnings. Specific approach: build 1 ~ 1.65 meters wide sorghum, surrounded by digging a good drainage ditch, every 30 to 50 cm with bamboo cutting 50 to 100 cm high arch round frame, covering the old plastic film, but should not be The film is tightly restrained and must be lifted up to help cool the shade and prevent rainstorms. Covering the film and covering the shade net at the same time, the effect is better. In addition, it is also possible to build a column with a height of 30 to 50 centimeters around the seedbed. The bamboo scaffolding, the reed curtain, or a thin layer of bamboo rakes or rakes can also be used to obtain good results. During the scaffolding, it should be noted that the covering should not be too thick, and it is generally appropriate to cause the flowers to be cool. The covering should also be gradually withdrawn as the seedlings grow. Otherwise, the seedlings are easy to grow and it is difficult to achieve the purpose of cultivating strong seedlings. In addition, the removal of the enclosure from the plastic greenhouse is also an ideal place for raising seedlings in the summer.
III. Precautions in the process of nursery
1. Seed disinfection must be performed before sowing. After soaking in warm water at 55°C for 20-30 minutes, soaking in fresh water for 3-4 hours, soaking with 1% copper sulfate for 5 minutes can prevent and cure anthrax and epidemic diseases, then rinse with clean water and then soak in 10% trisodium phosphate solution. 30 to 40 minutes, can passivate the virus activity, rinse with water. Or soaking seeds with 200 mg/L streptomycin for 30 minutes is effective for preventing scab and bacterial wilt. Seed soaking at room temperature for 8 to 10 hours, remove and dry the water and put it at 25°C～30°C to germinate. Wash with water once in the morning and evening, and sow after budding.
2. During the whole growth period, pay attention to the control of aphids and virus diseases, spraying 0.1% to 0.2% zinc sulfate + 0.2% potassium dihydrogen phosphate 2 to 3 times.
3. Nutritional nutrient soil nutrient soil is insufficient, can be poured potassium dihydrogen phosphate and ammonium nitrate equal mixture 500 times. The seedling age is required to be 30 to 40 days, and the plants can be colonized when they have 7 to 9 true leaves.
Fourth, strong seedling standards
Strong seedlings are characterized by thick stalks, short internodes, well-developed roots, complete leaves, thick leaves, dark green leaves, flower buds, no pests, no damage, uniform size, and seedlings that have been fully trained. Normal summer and autumn nursery takes 40 to 80 days. Strong seedlings are strong in stress resistance, with quick rooting after planting, quick seedlings, rapid growth, vigorous growth, early fruiting and high yield, and they are ideal seedlings.
Due to the high temperature of summer seedlings, leggy seedlings are extremely vulnerable. The leggy seedlings are characterized by slender stems, long internodes, small and thin fibrous roots, thin pale leaves, long petiole, fall off of the cotyledon, and the lower leaves tend to be yellow, and the resistance to resistance and disease resistance of the leggy seedlings is poor, after planting. Slow seedling slow, slow growth, easy to drop flowers and fruits, late flowering than strong seedlings, susceptible to disease, difficult to get early maturing and high yield. If the seedlings are sprayed with 50 mg/kg chlorhexidine, or with 500 mg/kg chlorcholine spray, stop the leggy.
Objective To study the application of spiral fixation for central venous catheter in clinical nursing.
Central Venous Catheter(CVC)
Cvc Catheter,Medical Cvc Catheter,Single Lumen Central Venous Catheter,Triple Lumen Central Venous Catheter
Zhejiang Hisern Medical Technology Co., Ltd , https://www.hisernmedical.com