"Yangchun rookie" can be divided into four periods in the vegetative growth stage, namely, germination stage, seedling stage, leaf growth period and fleshy root expansion period.
The growth dynamics of the aboveground leaf area showed a slow-slow-slow curve. The blade growth period is centered on the growth of the shoots. In the early stage of the expansion of the fleshy roots, the growth rate of the aboveground part is still higher than that of the lower part of the flesh, but its growth begins to weaken and the growth center shifts to the lower part of the ground.
The process of succulent root expansion can be divided into three stages. In the early stage of expansion, it is mainly the elongation of straight roots; in the middle stage, the length and thickness of the fleshy roots increase at the same time, but the transverse diameter is thickened later; in the later stage, the lower end of the fleshy roots is swollen sharply, and this stage is an important period for the expansion of fleshy roots.
The ratio of fresh weight to the lower part of the ground and the lower part of the ground can be roughly divided into three periods, namely, the sharp reduction period, the slow decline period and the stationary period. The sharp reduction period is centered on the growth of the underground; during the slow-down period, the above-ground and underground parts enter the growth period at the same time; the stationary period marks the transfer of the growth center from the upper part to the lower part. This law provides a reliable theoretical basis for scientific field management.
High-yield cultivation techniques
Soil and base fertilizer requirements Although “Yangchun Xinxiu†radish has strong adaptability to soil, it is necessary to select soil with deep soil layer, loose soil and rich organic matter to obtain high yield. Because the variety has a short growth period and rapid growth, the absorption of nutrients has the characteristics of high demand and high strength, so it should be based on the application of base fertilizer. In order to achieve a yield of 2,500 to 3,000 kg, it is required to apply 5000 kg of organic fertilizer and 70 kg of compound fertilizer as base fertilizer.
Appropriate sowing date The suitable sowing date of the variety in spring is suitable when the ground temperature at 5 cm is stable above 12 °C. The central part of the Jiaodong area is generally from April 10 to 15, and the eastern coastal area is from late April to early May.
Planting method Early spring cultivation should be ridged, with a ridge distance of 80cm, a ridge height of 15cm, a plant height of 25cm, and a double row per ridge, with a density of 6000 plants/mu. Cover the mulch after sowing, or cover the film first.
After the field management seedlings were unearthed, the membrane was broken in time, the seedlings were pulled out, and the membrane was sealed with soil. The management of fertilizer and water should master the principle of “one promotion to the endâ€. The seedling stage should properly control the growth of the upper part of the ground. Generally, it should not be watered to prevent the ground temperature from being lowered by watering. After the “breaking bellyâ€, it will enter the period of growth of the leaves, and the ground will see dry. Should be watered, such as lack of fertilizer, should be combined with watering to speed up the effect of nitrogen fertilizer 1 time, generally 15 ~ 20kg per mu. There is no need to spray bactericidal agents during the growth period, because the variety is highly resistant to disease, and spring is generally not susceptible to disease. Pay attention to the control of aphids. Watering was stopped 7 days before harvest to facilitate harvesting and storage of the product.
Benefit Analysis
Because the "Yangchun Xinxiu" generation of new hybrid radish is an off-season cultivar, it is a rare vegetable variety on the spring market, and its quality is good, taste is good, nutrient-rich, no pesticide residues, high cultivation efficiency, so it is deeply affected by vegetable farmers and consumption. The favor of the person. The average market price of commercial radish is generally 1~1.2 yuan/kg, the highest is 1.6~2 yuan/kg, the output per mu is 2500kg, and the output value per mu is more than 2500 yuan. After harvesting in early June, you can also grow summer radishes or other vegetables. If it is intercropped with crops such as watermelon and corn, it can increase 1,000-1,500 yuan per mu.
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