Study on Physiological Effects of Light Water on Pepper Leaves in Lightbox

An important source of plant photosynthesis is light. The intensity of light directly affects the development of photosynthesis and affects the growth environment of the plant, such as temperature and humidity. Therefore, the analysis and study of the light intensity and soil moisture on the physiological indicators of pepper leaves is of great significance. At present, research on pepper is mainly focused on single factors such as moisture and light. There are many reports on the effects of water and light on cotton, ginger, tomato, and B-wood, but mainly on seedling growth and fruit. In terms of quality, yield, and water use efficiency, there are few reports on membrane lipid peroxidation, protective enzyme activity, and their correlations. The light box is the most needed equipment for conducting light research.

The experiment set the light box to 3 light treatments: 70% and 30% of the natural light in open field and natural light in open field, respectively, indicated by L,, L: and L:. The test was mainly based on light level, and the water level was For the secondary treatment, the two-factor split zone random block arrangement was used and 4 replicates were used. The plot and the product 2.SmX2m = S.Om', row spacing 50cm, spacing 50cm. The cells are separated by a 60cm deep plastic film to prevent moisture from seeping. Planting on May 27, using conventional management after planting to the initial flowering stage, and gradually reducing the water supply to make the soil gradually dry. When the soil moisture content reached the set minimum soil moisture limit, moisture control began on July 6th. And shading treatment, on July 18th, the same growing population in each plot was selected as the test plant. All test plots were covered with rain, and Qingda opened.

The sample was analyzed by light box. Chlorophyll was a photoactive photocatalyst. Its content and proportion reflected the photosynthetic capacity of plants and their ability to adapt to changes in environmental factors. Under water stress, most chloroplasts become round and the thylakoids and chloroplast membranes are ambiguous or disintegrated. Chlorophyll biosynthesis is weakened, resulting in a decrease in its content. Shading can increase the content of chlorophyll b, mainly due to low light conditions. Bu, the absorption band of chlorophyll b in the blue-violet light part is relatively wide. Therefore, the relative increase in the content of chlorophyll b can improve the ability to use weak light, and it is an adaptive adjustment of the pepper for low light stress. The shading rate of 30% and the relative soil moisture content of 70%^-85% were higher in the content of chlorophyll and carotenoids, which could maximize the use of light energy and increase the utilization of light energy.

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