1 Cultivate strong seedling
1.1 The percentage of stay in the seedbed.
Seedbed land should be selected in the conditions of better water sources, fertile soil, no livestock and poultry hazards, no cruciferous crops have been planted in the past two years to do seedbeds, the ratio of seedbed land to field area is about 1:7-8. it is good.
1.2 The finishing and fertilization of the seedbed.
According to the seedbed net width 1.3-1.4m, groove width 30-35cm, depth 15-20cm tiller. The seedbed must be finely grounded, the surface must be flattened, and the earthworms must be finely shredded. Seed bed with high-quality decomposed organic fertilizer 2000-3000kg per acre as base fertilizer, urea 10-15kg, 25-30kg of general calcium applied to the soil surface, soaked in the soil as a seed fertilizer, while spreading 3.0% phoxim per acre Granules 3-3.5 kg control underground pests.
1.3 Prevention and control of seedbed pests.
When the cotyledon is unearthed after the seedling emergence, the ground pests shall be sprayed with 1500-times 2.5% Kungfu EC or 800-1000 times 5.7% chrysanthemum on the ground, and shall be controlled every 3-5 days until the 3-leaf stage, after which insects will occur. The situation is controlled in time.
1.4 sowing and thinning.
The sowing time is preferably 30-35 days before the planned transplanting. The seeding rate should be determined according to the 1000-seed weight and the germination rate of the seeds. Generally, 0.7-1.0 kg of seeds per acre is evenly sowed, and then covered with prepared and fully-comminuted organic miscellaneous fertilizer, so that the seeds are not exposed on the surface of the soil. . 1 leaf 1 when the heart sparse seedlings, 2 leaves 1 heart time seedlings, 3 leaves 1 heart every 6-8cm to stay a seedling Dingmiao, so that 160-180 seedlings per square meter is appropriate. When thinning, it is required to stay dense and thin, to stay small, to stay strong. Between the (fixed) timely light fertilizer after seedlings, 2-3kg of water per acre sprinkled with urea.
1.5 top dressing and watering.
The seedbed fertilizer must grasp the principle of early recovery, diligence, and a small amount. In the 3-leaf stage, 2 kg of urea per gram of water is sprayed on the watering can. Never pour on pouring water to prevent falling seedlings. 4 leaf stage appropriate control of fertilizer and water. 6-7 kg of urea per acre was applied to water for 6 days before transplanting.
2 Daejeon transplanting
2.1 Proper close planting.
Because of the high altitude, low temperature, and insufficient moisture in the mountainous areas, the transplanting density should be determined according to the height of the branching sites of different species, the strength of branching capacity, and the level of soil fertility. It is generally appropriate to control about 7000-10000 strains per mu.
2.2 Rational fertilization.
When transplanting, 6-8kg of urea per mu, and 20-25kg of calcium sulphate are used to apply water to the roots. After transplanting for 7-8 days, 30-35kg of ammonium bicarbonate is used per mu, and 1kg of borax is applied to the water. top dressing. When buds appear at the top of the main stem, 8-10 kg of urea per acre is applied to 3-4 cm of the rhizosphere as a bud-fertilizer.
2.3 Cultivated weeding and bauxite.
After transplanting, the missing seedlings should be checked in time, combined with cultivating, weeding, and fertilizing, in order to achieve loose soil, promote the early growth of new roots, enhance the absorption capacity of soil nutrients, protect the rhizosphere, prevent lodging, and increase the number of units. Area production.
2.4 timely control of pests and diseases.
When transplanting, use 3.0% to 3.5kg of 3.0% phoxim granules per acre to spread on the surface of the hoe and 5-10cm into the plough layer to kill the underground pests; use 800-1000 times the chlorothalonil pouring pond to control the rape roots. Swollen disease; Use 1500 times 2.5% Kung Fu EC or 800 times 5.7% Cinnamyl oil to spray control of cabbage caterpillars and aphids. The leaf spot leaffly was treated with a 1600-fold solution of avermectin to prevent and control white rust and downy mildew using a 450-480-fold solution of 72% metalaxyl manganese zinc spray.
3 timely harvest
In the main inflorescence of whole field pods 70% to 80% turn yellow discoloration, and when the seeds are mature color, you can harvest.
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