Method for relieving weak light stress of water spinach

Abstract

The invention provides a method for relieving weak light stress of water spinach. The illumination intensity of a growing environment of the water spinach is monitored in the fast growing period of the water spinach, and weak light stress is relieved by spraying organic carbon fertilizer when the average illumination intensity is smaller than 7500 Lux. The method for relieving weak light stress of the water spinach comprises the step of organic carbon fertilizer spraying, wherein illumination intensity determination is performed in the fast growing period of the water spinach, the organic carbon fertilizer is sprayed to the water spinach which is subjected to weak light stress, and each liter of the liquid fertilizer contains 90-110 g of nitrogen, 0 g of phosphorus pentoxide, 50-70 g of potassium oxide and 80 g or above of amino acid. According to the method, operation is easy and convenient, the performance is sensitive, whether the water spinach is subjected to weak light stress or not can be accurately monitored and judged, then fast and efficient relieving measures can be taken, and the problems of yield decreasing and quality reducing of the water spinach under weak light stress can be effectively solved.

Description

technical field [0001] The invention relates to a monitoring technology for water spinach low-light stress and a cultivation technology for alleviating low-light stress, in particular to a method for alleviating water spinach low-light stress. Background technique [0002] Weak light adversity refers to insufficient light intensity, which refers to the light environment where the light intensity in the environment is significantly lower than the light saturation point for a long time or for a short time, but not lower than the minimum light intensity that limits its survival. Light intensity is an important natural factor affecting the growth of vegetables. Continuous rain in a certain period of crop growth will cause insufficient light intensity in a certain period, which will reduce the yield, plant height, leaf number, net photosynthetic rate, and chlorophyll content of vegetables. Vacuoles accumulate in large numbers, eventually resulting in reduced production. [0003]...

AI Technical Summary

Problems solved by technology

At present, the supplement of carbon nutrition in the field mainly depends on the absorption of atmospheric carbon dioxide by plants. However, the rate of plant absorption of carbon dioxide decreases under low light stress, which is far from meeting the needs of plant photosynthesis, leading to carbon starvation of plants.