Flax cultivation techniques
1 Soil fertilization Choose soils without soil pollution, deep soil layer, good soil structure, medium fertility, slope below 15 and use autumn crops - beans - wheat - flax or legumes - wheat - autumn crops - flax rotation method, taboo continuous cropping The rotation period is more than 3 years. It is mainly used for deep plowing in autumn, with a depth of 20~30 cm. The spring plowing can be decided by the plutonium, and the plutonium can be levelled and leveled in time. Application of organic fertilizer 30 000 ~ 45 000 kg/hm2, urea 150 ~ 225 kg/hm2, superphosphate 225 ~ 300 kg/hm2, combined with soil preparation applied as base fertilizer. 2 Seed and sowing options: yaoya 9, ya 10, dingya 19, dinga 20, ningya 11, ningya 14 and other varieties. Pre-seeding sowing seeds, eliminating impurities and pods, and drying in sunny days 3 ~ 4d. When the soil 5 cm temperature stable at 7 ~ 8 °C sowing, sowing date in mid-April. Seeding depth 3 ~ 4 cm. Seeding capacity of 45 ~ 60 kg/hm2, seedling 300 ~ 3.75 million plants / hm2. Manual or mechanical sowing, spacing 15 ~ 20 cm. 3 Field Management Omega-3 Fish Oil,Fish Oil 10/50 Tg,Omega 3 Fish Oil,10/50 Tg Fish Oil ZHOUSHAN SINOMEGA BIOTECH ENGINEERING CO.,LTD , https://www.sinomegabiotech.com
3.1 cultivating weeds, cultivating and cultivating grasses 2 or 3 times. Seedling height 5-7 cm for the first cultivator; seedling height 15-20 cm for the second cultivator.
3.2 Top-dressing as seedlings Top dressing 2 times, topdressing for the first time at the end of the pod, and ending at the budding stage for the second time. Top nitrogen and potassium fertilizers were used as top dressings, top dressing was 75~150 kg/hm2, and potassium dihydrogen phosphate was 6 kg/hm2.
3.3 Pest control The principle of harmless treatment is mainly adhered to with agricultural control, physical control, and biological control, supplemented by chemical control.
3.3.1 Selection of excellent varieties of anti-(endurance) disease for agricultural control; layout of reasonable varieties, rotation for crop rotation; balanced fertilization for soil testing, application of phosphorus and potassium fertilizers, appropriate application of chemical fertilizers; strengthening of cultivator, cleaning of pastoral areas, reduction of the number of diseases and insects, and timely treatment Onset center.
3.3.2 Biological control and protection Use natural ladybirds such as seven-spot ladybugs, food flies and grass bells to prevent flooding, create an environment conducive to the survival of natural enemies, and choose pesticides with low lethality to natural enemies.
3.3.3 Physical control According to the biological characteristics of pests, use sugar vinegar: liquor: water ratio 1:4:1:16 sweet vinegar or solar insecticide lamp 15 ~ 30 ç›/hm2 to kill armyworm and other pests.
3.3.4 Chemical Control
3.3.4.1 Flax larvae, Mythimna separata, and black cashew beetle use 2.5% emulsifiable EC 300 mL/hm2 spray 600 kg of water, control 2-3 times, safety interval 7 days, or use 50% octane Phosphorus EC 750 ml/hm2 sprayed 750 kg of water 1 or 2 times, with a safety interval of 20 days.
3.3.4.2 Aphid use 1 000 ~ 2000 times liquid 50% anti-influx WP 150 ~ 450 g/hm2 control, safety interval 11 d.
3.3.4.3 Golden spear, tiger, and earthworm use 1 000 times liquid 90% trichlorfon emulsifiable concentrate 375 g and fried oil dregs 75-120 kg mix well, sowing and sowing in the sowing ditch at the time of sowing, safety interval 7 d.
3.3.4.4 Blight, Anthrax, and Powdery Mildew use 75% thiophanate-methyl wettable powder 750~1 125 g/hm2 spray 600 to 600 kg of water 1 or 2 times, with a safety interval of 7 days; or choose 1 000~ 2 000 times liquid 64% antivirus WP 750~1 500 g spray 2~3 times, safety interval 4 d; choose 1 000~2 000 times 20% triadimefon EC 750 mL spray to control powdery mildew, safety Interval 7 d.
4 Harvested flax seed is ripe in the late harvest.