How to determine the cultivation period of vegetable cultivation? Due to the different climatic conditions in various regions and the variety of vegetables, it is not possible to specify the cultivation period for open vegetable cultivation. Generally, the timing of sowing and planting should be determined according to the local climatic conditions and soil conditions, crop types, the time required for the product to be marketed, and the specific requirements for cornice arrangements. Most of spring cultivation requires early maturing and high yield, but as long as the soil and climate are suitable, planting should be early. Specific time generally grasp the "three look" (see the sky, see the land, see seedlings) colonization. Look at the sky, we must seize the "cold tail warmer" planting, neither frost damage, but also fight for early maturity. Look at the land, that is, when the soil temperature is appropriate, dry and wet when appropriate, planting, in order to facilitate the seedlings hair roots. To see seedlings, it is to select “tough and strong seedlings†for planting and to fight for early-onset trees. If the seedlings are “old and strongâ€, the soil is wet and dry, and even if the plants are properly planted early, they will not be easily damaged due to strong seedling resistance after night frost. If the seedlings are tender and weak, although the soil is dry and wet, it should not be planted early. However, if there are several consecutive sunny days, it is easy to survive after planting. When encountering problems such as even cloudy days, long seedlings, and too wet land, conditions should be created to plant seedlings. In vegetables and vegetables, for cool vegetables like cauliflower, broccoli, mustard, and potatoes, it is generally possible to plant 10 cm soil temperature at 5 to 10°C after thawing in spring; , eggplant, pepper, cucumber and other thermophilic crops; planting 10 cm ground temperature should not be less than 10 ~ 15 °C, and must be frost. In the summer and autumn hot season and the winter cold season, it is also necessary to seize the main contradiction in accordance with the above principles and do a good job in the colonization of summer, autumn and winter vegetables. If the main contradiction in summer and autumn is high temperature, it is necessary to sow in the morning or evening or on cloudy days to avoid the influence of the hot sun and high temperature and make it survive as soon as possible after planting. The main contradiction in the winter is the invasion of the cold current. It is necessary to seize the short warming time according to the law of cold currents and to plant early.
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