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1. Choose the seeds. Carrot seed germination rate is low, generally only 65 to 70%, can not choose the weak vigor for many years of Chen species, should use the new seeds of the year. When selecting seeds, special attention should be paid to selecting seeds that are full and have a high germination rate, and use light seeds that have been dehaired as much as possible. Before germination, germination tests should be done to determine the amount of sowing.
2. Seed treatment. If the seed is used, the bristles on the seed should be rubbed off before sowing, so that the seeds and the soil will be in close contact with each other, absorbing more water to facilitate germination.
3. Fine soil preparation, adequate base fertilizer. To grow carrots, we must choose rich organic matter. The soil is deep and soft, and well-drained sandy loam soil. The soil plowing depth is generally 25 to 30 cm. Applying basic fertilizer before planting, usually 3000-4000 kg organic fertilizer per acre, about 75 kg of three-element compound fertilizer, 2-3 times after cultivating, so that the soil is finely crushed, no waste, and then the land will be converted into a wide rake. For drills. Generally 2 to 2.5 meters wide.
4. Suitable for sowing. According to the soil moisture content, the seedlings were sowed immediately after wetting and loosening during drought, and then planted with six-toothed pods. New seeds are generally selected in the current year, and 0.5 to 0.8 kg of seed per acre is required. Before the emergence of the soil to keep the wet see dry, in order to ensure timely emergence.
5. Shady vegetables. When seeding, a small amount of mixed green seeds are sown and used to shade with the characteristics of fast growing seedlings. When the carrot seeds are seeded, they are ready to be picked on the market in time. This will not only benefit carrot emergence, but also economically use land and cultivate early autumn vegetable seedlings. benefit.
6. Prevention of underground pests. In order to prevent the underground pests from eating seedlings, 0.5 kg of phoxim and 50 kg of fine soil shall be sprinkled in the lotus root after each mulch, and then the seeds shall be sown again. It is also possible to use 90% trichlorfon per acre for 3 to 4 kg of wheat bran and evenly spread on the ground.
7. Chemical weeding. Carrot seedlings emerged during the seedling stage, which coincided with a high-temperature rainy season. The seedlings emerged late in the same period. If the weeding is not timely, it is easy to form a grass bully seedling. In addition to manual weeding, chemical herbicides should be applied in time after sowing, and the ground should be uniformly sprayed with 100-150 ml of “Shi Tianbu†EC and 30 kg of water per mu.
8. Cover grass moisture. After sowing, the appropriate amount of short wheat (rice) grass is covered on the surface of the car, which can not only protect the seedlings from emergence, but also prevent the rain from eroding the soil.
9. Seedling period management. It is also a crucial period of management before the cotyledons of the carrots are exposed to the ground until the leaves are exposed. Special care must be taken to keep the soil moist to preserve the seedlings.
The key technology of carrot seedling
In production, the emergence of incompleteness and incompleteness are often the main factors restricting the high yield of carrots. To make Miao Miao Qi, we must grasp the following key measures.