Plant selection and planting should first be selected to keep the field: it is better to use loamy soil and sandy soil with uniform soil fertility, and it must be well drained and warm to the sun. When the autumn-sown carrots reach the maturity of the commodity, they are selected in the field, and the plants with the correct color, less leaves and no lodging are selected, and then the fleshy roots are selected. The surface is required to be smooth, bright in color, neatly shaped, not cracked, and less roots. The fleshy roots. Cut the selected fleshy roots back a few centimeters from the tail, select the fleshy roots with thick phloem, small stems, and orange-red, cut off the upper leaves, leave the base of the leaves about 13 cm, and plant the plants in the remaining fields. . When the plant is planted, it is necessary to ditch, move into the covering soil, and then water the planting. The planting distance varies according to the method of pruning. If only one main flowering branch is used, the row spacing can be set to 2535 cm. If it is ready to be topped, leave 4~5. For a first-level branch, it can be set at 4040 cm.
After planting the plant, the plant is gradually convulsed as the temperature rises. In general, the tops of the main branches first produce inflorescences, and then the tops of each side branches produce inflorescences. In the middle stage of development, the lateral branches produce secondary collaterals, and the tops regenerate the inflorescences, so there are many branches. Usually, the main inflorescences first bloom, and the inflorescences of the lateral branches bloom, resulting in the flowering period of the same plant and the longer duration of the seed maturity, which affects the harvesting of the seeds. Therefore, in order to concentrate nutrients and make the seeds full, full and mature, the whole plant is often treated in the production. The method includes: single planting. That is, each branch has an inflorescence on the main branch, so that the main branches bloom early, the seeds mature early, and the kernels are large, but the number of plants needs to be large. Topping the whole branch. That is, when the height is 23~27 cm, the main branches are topped, and 4 to 5 strong branches are left, one inflorescence is left for each branch, and all the lateral branches are removed. Generally pruning. That is, 4 to 5 inflorescences on the main branches and side branches are left, and the remaining branches or inflorescences are all removed.
Harvesting at the right time When the disk turns yellow-brown, the outer edge turns inward, and the lower stem begins to turn yellow, the seed can be harvested.
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