Cucumber flower topping is also known as flower head. It is a common physiological disorder on cucumbers in greenhouses. It usually shows internode shortening near the point of growth. There are no heterozygous flower clusters and no heads forming. shape. Flower topping occurs at the beginning of the results and has a great influence on the yield and quality of cucumber. According to many years of experimental observation, cucumber flower topping can be divided into three types: 1, developmental dysregulation type. The early temperature is low, and the temperature difference between day and night is large. The plants are inhibited by vegetative growth and the reproductive growth is too fast. It is easy to have flowers topping. 2, wound type. High temperatures and droughts in greenhouses, especially when the soil is dry, are caused by too much fertilizer and insufficient water to cause root burning, or the soil is too wet. However, the temperature and the ground temperature are low, causing the roots to easily form a flower topping. 3, physiological deficiency type. Unfavorable soil conditions, weak root activity, and difficulty in attracting fertilizers, can lead to flower topping when physiological deficiency occurs. Prevention methods: (1) Reasonably regulate the temperature, prevent the temperature from being too low or too high; promptly loosen the soil and increase the ground temperature; if necessary, fertilize and water first, then warm up the soil to promote root development. (2) The rational use of fertilizer and water. Greenhouse cucumber fertilization, to master a small amount, multiple times, Shi Liu, the application of organic fertilizer must be fully decomposed, to prevent improper rooting due to improper fertilization. Timely and appropriate watering, to avoid flooding and affecting the ground temperature, resulting in roots. (3) Remedy. Plants with flowering toppings have appeared, female flowers have been removed in appropriate amounts and sprayed with potassium dihydrogen phosphate 300 times; when watering of rooted flowers occurs, watering is done in time so that the water holding capacity of the soil reaches 22%, and the relative humidity of the air reaches When it is 65%, it will be irrigated and will return to normal soon.
Food additives are compounds or natural substances added to food for the purpose of improving the color, aroma, and taste of food, as well as for the needs of anti-corrosion and processing technology. At present, there are 23 categories of food additives, with more than 2,000 varieties, including acidity regulators, anticaking agents, defoamers, antioxidants, bleaching agents, leavening agents, coloring agents, color retention agents, enzyme preparations, and flavor enhancers, nutritional fortifiers, preservatives, Sweeteners, thickeners, spices, etc.
Erythritol, Sweetener, Pigment, XOS , Carotene, fish oil
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