Application research progress of supplementary light technology in vege-table production
The growth of facility plants in most areas of northern China in winter and spring has the problem of light short-age.When plastic greenhouses,solar greenhouses,multi-span greenhouses and other facilities are affected by winter and spring weather,natural light cannot meet the needs of plants for light,leading to poor plant growth,which is an important reason for crop yield reduction,crop failure and quality decline.In winter or spring season of northern China,the temper-ature is low and the sunshine is short.Light is one of the main limiting factors for industrial vegetable seedlings.Vegeta-ble seedlings and grafted seedlings are prone to weak seedlings,overgrowth and slow growth in low light environment,which seriously restricts the agricultural production.In order to solve the problem of insufficient light in facility produc-tion,the use of supplementary light technology is an important means of modern agriculture.This paper mainly reviews the effects of different light environments on the growth of vegetable seedlings and the key points of winter and spring light supplementation technology,aiming to provide technical support for vegetable seedling raising and production.
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