Under the conditions of weak light, pea sprouts can easily cause the hypocotyl to elongate, which not only makes the sprouts grow thin, but also is not conducive to the development of the axillary buds in the base. Appropriately increase the light intensity, the latent axillary buds can develop into lateral branches and carry out more production. The main approach is: Whenever pea sprouts are harvested about 2 days before harvest, they are allowed to receive more than 3000 lux (maximum of 6,000 lux). This promoted the buds to become dark green, and the stems and leaves became thicker and the first node decreased. When harvesting, leave one true leaf or one branch, leave it in the air and light for half a day before harvesting, and then move to 5000-6000 lux light to cultivate the first axillary bud and branch. Grow. Two days later, it was restored to low light conditions to promote the accelerated growth of stems and leaves, while inhibiting the growth of lateral buds and small branches. In this way, when the shoots grow to a certain height (12 to 15 centimeters), they can be harvested according to the pre-harvest management measures. Then repeat the above process and harvest the third crop.
In the production process of multiple defects, the following points should be noted:
1. The light is too weak to cause the seedlings to be long and thin, and the light is too strong or the light is too long, which will increase the fiber and decrease the quality of the seedlings. Therefore, the light should not be too strong, nor too weak, with 3,000 to 6,000 lux.
2. In the production process, pay attention to the adjustment of temperature and humidity. The suitable temperature for cultivating pea sprouts is 15-20°C, and the relative humidity of air is about 85%. If there is a substrate, it must be kept moist. Therefore, fresh water should be sprayed twice a day. When spraying, be careful not to impulse the seeds.
3. During the cultivation and management process, it should be noted that the density of sprouts can not be too large, but also pay attention to ventilation.
4. In the case of multiple harvests, pea sprouts often appear to be defertilizer. Generally, in the production of the second and third alfalfa sprouts, the phenomenon of yellowish green or non-seedling stems and leaves due to malnutrition is often found. Therefore, it is necessary to supplement nutrition timely. Generally combined with water spray, 0.2% ternary compound fertilizer may be added, or potassium dihydrogen phosphate may be added, or 0.2% urea may be added to apply fertilizer.
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