Carrot seeds have the characteristics of slow germination and low germination rate, while carrots are sown in the fall. At this time, most of our province is still in the hot and rainy season, so it is often because the growers did not take effective measures at the time of sowing. Seedlings, late emergence, and irregular seedlings have resulted in low yields and even planting failures. The reporter interviewed Wu Huanzhang and Guo Zhaojuan of the Vegetable Research Institute of Zhengzhou City on how to guarantee early emergence of carrots in the autumn and the issue of Qimiao. They proposed the following specific solutions:
Selection of fresh seeds due to the formation and structure of carrot seeds (its leather quality, poor water permeability, small embryos, poor ability to excavate, affected by the climate during flowering, often some of the seeds have no embryos or poor embryo development), the germination rate is low , generally only about 70%. If it is Chen seeds, the germination rate is even lower, often causing a large number of seedlings, and the fleshy roots grown by Chen seeds are prone to produce tillers and affect the yield. Therefore, new seeds must be sown. The new seeds can be distinguished by smelling and observing the color of the seed kernels: the new seeds have a pungent aroma and the seed kernels are white; the Chen seeds have no pungent aroma and the kernels are yellow or dark yellow. The life of carrot seeds is generally 5 to 6 years and can be used for 2 to 3 years.
When seed processing is purchased, try to use treated photons. If it is a hairy seed, the bristles on the seed should be rubbed off before sowing, so that the seeds are in close contact with the soil and absorb enough water to facilitate germination. At the same time, before sowing, sunny days were selected for 1 to 2 days in order to increase the seed germination and germination rate.
Immersion seed germination In most cases, carrots are broadcast live, and seedlings are guaranteed by a large seeding rate. If seed soaking before sowing can increase seed germination rate and speed up emergence. Specific methods: soaking the seeds of the mane after soaking in warm water of 40° C. for 2 hours, soaking it with gauze, placing it at a temperature of 20° C.-25° C., and germinating the seeds for 2-3 days.
For fine soil preparation, choose sandy loam soil or loam soil for planting carrots. After selecting a good place, plow deeply 25-30 centimeters, finely peck 2 or 3 times, level the ground, make 1.2 to 1.5 meters wide radon or 40 to 50 centimeters wide ridge. Apply 4,000 to 5,000 kilograms of fully organic fertilizer, 50 kilograms of compound fertilizer, 20 to 25 kilograms of superphosphate, and 25 to 30 kilograms of potassium sulfate per acre. If conditions are available, it is best to use a no-till seed drill to plow the soil to make it full.
Appropriate planting can be fully irrigated before site preparation and planting should be done when the locust situation is appropriate. It is also possible to directly make earthworms or ridge seedings, and then fully flood the water to meet the water demand of carrot seeds. Pay attention to irrigation after sowing, and ensure that the surface is not dry before emergence.
When sowing vegetables are sun-shaded, they can be mixed with a small amount of green seeds and sown in the sun. After the emergence of carrots, vegetables are harvested in time. This will not only help the emergence of carrots, but also improve land utilization and increase income.
Ganoderma lucidum after sowing, in the surface or mulch covered wheat straw, etc., there is protection, cooling, anti-rain erosion and soil compaction, is conducive to emergence.
Chemical weeding carrots have a higher planting density, they are in a high temperature and rainy season at the seedling stage, and the weeds grow rapidly. Manual weeding is more difficult. It is easy to form grasses because weeding is not timely and affects the emergence and growth of carrots. It must be done in time. Chemical weeding to avoid the formation of grassland.
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