I. Selection of varieties
The fragrances are small and large and the greenhouses grow large and small。
1. Small, 20-35 cm tall, 7-9 leafs of fragrance. The leaves are short, 12-15 cm long, resistant to cold disease, slow growth and late smoking. The flat seed is highly regenerative, yielding, sowing at once and reaping many times。
2. The fragrance is grown in size, up to 30-40 cm, 5-6 leaf, long, fast and late。
Preparation and seeding
(i) sowing volume
The aroma is suitable for dense planting and is spread in flats, in amounts per acre, in amounts ranging from 7 to 10 kg, in amounts ranging from 10 to 12 kg。
(ii) seed treatment
24h impregnated with water of 18-20°c, wash it with hands, remove impurities and unsaturated seeds, mix the sand, seed it in an environment of 18-20°c, 5-7 days。
(iii) fertilisation
Smoke and wet and cold weather, greenhouses are cultivated and each acre of rotted organic fertilizer is readily seeded. Seeds germinate at 16-23°c, 3000 kg, calcium perphosphate 50°g, mixed tillage 15-18°c, over 24°c poor growth. It's 100 cm wide, it's flat, it's got a relative humidity of 60-70%. Weakness, less demanding soil, more demand for nitrogen fertilizer and water, more adaptive, robust and less pests. Long-term short-lived and inflexible periods。
(iv) seeding
Water is pouring in, leaking and spreading, covering 1 cm. Or open 4 to 5 ditches deep 1 to 1. 5 cm deep, watered in the ditch and 1 cm of soil. It can also be sowed and watered。
Iii. Post-plant management
(i) sapling, chinese tillage and weeding
After planting, six to seven days of seedlings are produced, and when and when seeded, they are kept at a distance of 4 cm, combining the seedlings. One ~2 strokes are required during growth。
(ii) fertilizer water management
When the sap is 7 cm or so, the acre application of urea 15 kg, or ammonium sulphate 30 ~ 35 kg, is followed to prevent the burning of leaves and can be combined with water. In the case of multiple harvests, the same amount of nitrogen fertilizer is followed after each harvest. After 50 to 60 days of broadcasting, the standards are met。
(iii) temperature management
Ventilation should be enhanced when the aroma has a high temperature at 15-20°c and is below 4-5°c, and at 25°c。
Collection
The harvest starts at 20-30 cm. Based on market needs, a single harvest can generally be uprooted; however, small aroma is highly regenerative and can be harvested many times. In general, one harvest of 30 to 35 days is taken, with care not to rush water after harvesting, and then fattening the water after the wound has healed。
V. Pest management
The main diseases of the aroma during its growth are bacterium nuclei, pollinosis, etc., and pests include maggots, aphids, etc。
1. Bacillus disease
(1) symptoms and hazard characteristics. In the early stages of the disease, the strains were trimmed, humid or softened, and the surface was entangled in silk, i. E. A fungus filament, resulting in black brown rat faeces on the surface of the disease and inside the cavity。
(2) methods of response. Rational rotation, special attention should be paid to field hygiene before seeding, the timely collection of sick and residuals for burning, and surface spraying of disinfectants to disinfect the entire garden. Strengthen field management, which should be reasonably fertilized in the long term in the aroma, increase the application of potassium phosphate, avoid the application of nitrogen fertilizers and water in due course. Treatment with 70 per cent of the manganese zinc wettable powder 600-700 times the liquid or 75 per cent of the bacterial wettable powder 500-600 times the liquid. Sprayed about one in seven days and three to four in a row。
Pinky
(1) symptoms and hazard characteristics. The main hazards are leaf and tuber, which produce white powdered spots at the onset of the disease and on the surface of the leaf, which then expand and unite to cover the bulk of the tuber and the surface of the leaf, which in serious cases cover the entire lobe, and which is coloured by the disease, leading to both local and total mortality。
(2) methods of response. Seeds collected without a disease-free plant are suitable, density is appropriate, organic fertilizer is applied to avoid excess nitrogen fattening; air ventilation is protected, moisture is reduced and light is increased; field sanitation is completed and central strains are found to be unplugged in a timely manner; the disease is thoroughly collected and burned during harvesting; 15% of the triazine (spoiling) humid powder is sprayed 1,500 times earlier in the onset of the disease, and 50% of the sulfur yellow suspension is 200-300 times more liquid。
Pest control maggots use 90% trichlorfon (methrin) 500 times the fluid for rooting and aphids use 2. 5% bromocymethrin cream for 2,000 times。
This is all of today's content, and growers can refer more to it, or they can comment on what they want to know about the three agricultural techniques, and they can make it easier for them to do so. It's not easy to create, and i'd like you to look at the writer and forward the positive comments. Thank you
