As a seasoning vegetable, it is rich in nutrients and simple in cultivation and management. The main points of cultivation techniques are as follows:
The characteristics of cockroaches are of the genus Umbelliferae. It can withstand a low temperature of -1 ° C to 2 ° C, suitable for growth temperatures of 17 ° C to 20 ° C, growth slower than 20 ° C, stop growth at 30 ° C. The soil is not strict with the requirements of the soil, but the soil with good soil structure, strong fertilizer and water retention capacity and high organic matter content is conducive to the growth of alfalfa.
The selection of alfalfa varieties includes large leaf varieties and lobular varieties. Large leaf planting plant height, large leaves, lack of engraving and shallow, low aroma, high yield; small leaf planting plant is short, small leaves, deep inscription, strong aroma, cold, adaptability, but the yield is slightly lower, generally cultivated Choose the lobular variety.
The cultivation techniques of the open field can be cultivated in the spring, autumn and winter. It is not advisable to water too much during the seedling period. When the seedling grows to 10 cm, the plant grows vigorously, and should be watered to keep the surface of the soil moist. Apply water-efficient nitrogen fertilizer 1 to 2 times while watering. Pay attention to the cultivating and appropriate seedlings, and remove the weeds during the seedlings. In the summer, it is necessary to properly cover the shade, and prevent rainstorms from rushing, and drain the water in time to ensure that the seedlings are neat.
The greenhouse cultivation techniques are generally broadcast live from September to October, and the frozen water is poured before winter to facilitate the wintering of the seedlings. It is shackled in January and does not require ventilation and ventilation from January to February. When the seedlings return to green, carry out cultivating, loosening, and weeding. When the seedling height is 10 cm, the plant enters a vigorous growth period, and the greenhouse is kept at 15 °C to 25 °C. Each acre is treated with about 15 kg of ammonium sulfate per day, and it can be harvested 1 to 2 times.
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