High-yield cultivation techniques of carrots

Carrots are rich in sugar and starch, easy to store, and resistant to transportation. They are important vegetables for autumn and winter harvest. Its high-yield cultivation techniques are:

First, fine land preparation, apply enough base fertilizer. Carrots are root vegetables, and should be planted with sandy loam with deep soil, loose soil and rich organic matter. Immediately after the harvest, immediately plow 25 to 30 cm, then finely simmer 2 to 3 times, preferably re-cultivation once before sowing. Combined with deep ploughing of 2,000 to 2,500 kilograms of manure and manure per mu, or other 5,000 kilograms of farmyard manure, combined with 15-20 kg of superphosphate, 20 kg of potassium sulphate and 1.5 kg of borax. Phosphate fertilizer is best mixed with farmyard manure for more than 15 days before application.

Second, seed treatment. It is best to use the new species of the year. Before the sowing, the bristles will be removed and sun-dried for 1 to 2 days. Soak in warm water of 40 ° C for 2 hours, then place at 20 ~ 30 ° C to moisturize and germination. Sow when most of the seeds are white.

Third, suitable for early broadcast, thin broadcast, mixed broadcast. The best sowing date in the Yangtze River Basin is from late July to early August, but it is only late. Use the amount of seed to broadcast 750 grams per acre, sowing 1000 to 1500 grams per acre. When planting, mix 2% to 3% of Chinese cabbage seeds and mix well with a small amount of fine soil. Because the seed of the Chinese cabbage is quick to emerge, it can play the role of shading, cooling, and protecting the carrot, which is conducive to the emergence of carrots.

Fourth, morning seedlings, rare seedlings. After the emergence of 1 to 2 true leaves, the seedlings begin to appear, and 4 to 5 true leaves are fixed. Fixed seedling spacing: 10 cm for small and medium-sized varieties and 13 to 15 cm for large varieties. Seedlings that are prone to form roots should be removed (ie, the leaves are particularly dark, the leaves and petioles are dense and hard, the leaves are too many and the short and thick seedlings).

5. Reasonable topdressing and watering. From sowing to emergence, watering should be carried out 2 or 3 times to keep the soil moist and promote emergence. Into the leaf growth period, it is necessary to properly control the watering, prevent the upper part of the ground from growing, and affect the formation of the root of the meat. 2 to 3 times of topdressing, the first time should be 1000 kg of human excrement per acre in the 2 to 3 times of true seedling stage, and the seedlings should be promoted for the second time; the second time should be applied after the seedlings, and the human excrement 1500 ~ 2000 kg; the third time in the rhizome expansion period combined with hydration application, the use of human excrement 1500 ~ 2000 kg plus potassium sulfate 4 ~ 5 kg mixed pouring. Post-growth application. In the later stage of growth, excessive water and fertilizer should be avoided, otherwise it will easily cause cracking and is not conducive to storage.

6. Chemical weeding. (1) Soil treatment: use 48% of cable scent of 150-200 ml or 48% of flurinol emulsifiable concentrate 200-300 ml per mu, and dilute with 50 kg of water to spray evenly on the soil surface after sowing. (2) Stem and leaf treatment: 15% per acre to kill 40 to 50 ml of emulsifiable concentrate or 10.8% high-efficiency capable emulsifiable concentrate 20 to 25 ml, diluted with 50 kg of water, in most grassy weeds in 3 to 5 leaves At the time, spray on the stems and leaves of weeds.

Seven, timely harvest. The harvest is suitable for November, to avoid harvesting too late, so that the fleshy roots are frozen.

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