The role of plant growth lights in vegetable planting

Plant growth supplement light is designed according to the light wavelength range (mainly red and blue light) required for plant growth and the required illuminance. The different ratios of the three primary color phosphors are used to adjust the spectral energy required for plant growth. Distributed lights. Reasonable use of this kind of light can improve and prolong the lighting conditions and time for plant growth, speed up the process of growing seedlings of crops and shorten the growth cycle of crops.

One, lighting effects

  1. It can shorten the nursery time up to 50%.
  2. It can reduce the occurrence of pests and diseases and the amount of deformed fruits.
  3. The crops can bloom, bear fruit or mature 15-20 days earlier.
  4. The yield of vegetables can be increased by more than 20%, and the vividness of flowers can be increased.
  5. Vegetable sunshine time

Sunshine refers to the time of day when the sun shines. For crops, especially vegetables, flower bud differentiation, bolting and flowering, fruiting, the formation of tubers, tubers, and bulbs, and the length of light time all play a decisive role. Different vegetable varieties have different requirements for sunshine time. The popularization and use of supplementary lights is to maximize crop yield potential, meet the light demand of crops with different sunshine requirements (especially medium and long-day crops), and reduce the impact of rainy weather on crop yields. The influence of the fertility process provides the possibility.

The requirements of the main vegetable varieties for sunshine time are introduced as follows. Readers can refer to these data to adjust the crop supplement light time according to the local sunshine time of the day to maximize the benefits of growing vegetables.

According to the different length of sunshine demand of vegetables, it can be divided into: long-day vegetables, medium-day vegetables and short-day vegetables.

Long-day vegetables mainly include: Chinese cabbage, cabbage, carrots, tomatoes, celery, spinach, lettuce, green onions, garlic and so on. Such vegetables require 14 to 16 hours of sunshine per day.

Vegetables in USA mainly include early-maturing varieties of kidney beans, cucumbers, peppers, eggplants, and vegetable soybeans. Such vegetables require 11 to 13 hours of sunshine per day.

Short-day vegetables mainly include: cowpea, late-maturing varieties of vegetable soybeans, concanavali, lentils, chrysanthemum chrysanthemum, amaranth and so on. Such vegetables require 9-12 hours of sunshine per day.

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