"Ideal big roots" are radish double crosses bred by Japan using self-incompatibility, which is early maturing, high-yield, high-quality and good. The sowing period is from July 15th to August 10th, and the production cycle is short, from about 55-60 days from sowing to harvesting. Its cultivation techniques are as follows:
1, gargle. It is advisable to use wheat, watermelon and beans in the front, avoiding heavy crops with cruciferous crops, and it is not advisable to grow radishes in the old vegetable garden.
2, land preparation. After the harvest of the former crops, the residual plants and weeds are removed in time, and the tillage and drying are carried out. Then, turn over 40 cm deep, so that the land is level, the soil is fine, there is no shovel, the trenches are ridged, and the irrigation and drainage works are needed. Doing ridge specifications: (1) Double ridge: ridge distance 100 cm, ridge top width 20 cm, ridge height 15 cm-20 cm, 2 rows per ridge; (2) single ridge: ridge distance 50 cm, ridge top width 20 cm The ridge height is 15 cm - 20 cm, and each row is ridged. It is appropriate to go north and south.
3. Fertilization. Based on the base fertilizer, the fertilization amount per mu is 8 kg of nitrogen fertilizer, 3 kg of phosphate fertilizer and 9 kg of potash fertilizer. The base fertilizer is evenly applied during the preparation of the ground, and it is not suitable to apply fertilizer at a point to prevent damage to the main root and to cause malformation.
4. Sowing. Open shallow ditch hole, 2-3 capsules per hole, sowing depth is 1.5 cm -2 cm, row spacing 40 cm, plant spacing 20 cm -24 cm, about 5500-6700 holes per acre, sowing sowing, flattening soil after sowing . If the planting is delayed due to the weather, the plant spacing can be increased to facilitate the growth of the radish and achieve the purpose of early harvesting and drying.
5, fixed seedlings. 4-5 leaves between the seedlings and seedlings, one seedling per hole. It is necessary to keep the leaf shape in line with the characteristics of the variety, the leaf color is light green, the growth is moderate, and there is no disease and insect pest. The leaves are dark green and the growth is too strong. The seedlings of the hybrid or root parts are usually separated.
6, irrigation and drainage. The radish should be smashed before planting. The water requirement during the seedling stage is not large, but the roots of the radish are underdeveloped and should be watered in time when the drought is dry, so that the surface soil can be kept moist, and the flooding should be avoided. At the peak of the growth of fleshy roots, water should be supplied adequately and evenly to prevent cracking. Under the conditions of effective soil water content of 70%-80% and air humidity of 80%-90%, the fleshy roots expand quickly and have good quality. In case of rain, drain it in time to prevent rotten roots.
7, cultivating. Before the ridge is closed, it should be ploughed in time to keep the soil loose, remove weeds and promote normal growth. Because of watering and precipitation, the roots should be cultivated in time to prevent the occurrence of bifurcation.
8, plant protection. The main pests are aphids, cabbage caterpillars, borers, small tigers, etc., can be controlled with 25% cypermethrin EC 4000-5000 times; the main diseases are virus disease, downy mildew, soft rot, black rot, White rust and seedling stage blight, squatting disease, etc., can be controlled by Jinggangmycin, Mancozeb, and agricultural streptomycin. In the prevention and control of pests and diseases, organic phosphorus and organochlorine pesticides such as dimethoate and dichlorvos are strictly used to prevent the residual amount of liquid medicine and the sale of products is difficult.
9, harvested. Harvested 55-60 days after sowing. More than 30% of the radishes are exposed to the ground for more than 10 cm, and the diameter is 3 cm to 4 cm. When the single fresh weight reaches 750 g to 1200 g, the first harvest can be carried out. Watering once every 2-3 days before harvesting, in order to facilitate the lifting, the force should be stable when pulling and pulling, to prevent unplugging. Small grow up again.
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