Caused by the small amount of jujube flowers, one fertilization is unreasonable, the use of large amounts of chemical fertilizers, resulting in unbalanced nutrition. Jujube trees are needed for NPK and other kinds of trace elements, especially NPK is indispensable. Partial application of a certain kind of fertilizer will cause the unbalanced growth of jujube trees, the rapid growth of partial branches with new nitrogen fertilizers, the extension of jujube hanging, and the light green leaves; partial application of phosphate fertilizer leaves are hypertrophic and dark green, and jujube stocks are short and easy to age; Partial application of potash fertilizer will result in narrow and thick black leaves, and it is not easy to extract new shoots, which is unfavorable for future tree crown renewal and expansion. Lack of other trace elements may also cause imbalance in the growth of the jujube tree; second, the summer shearing is not timely, the nutritional growth is excessively prosperous, the reproductive growth is weakened, resulting in less flowering and affecting fruit setting; the third is a large number of foliar spraying hormones. Jujube nutritional supply is inconsistent, resulting in growth disorders, vegetative growth is greater than reproductive growth, resulting in flowering without flowering, seriously affecting the yield of jujube; Fourth, pest control is not timely, pests and food damage the buds, resulting in reduced flowering.
For the reasons that are not used above, appropriate technical measures must be taken to prevent the problem of low flower-setting rate. The first is to control the amount of chemical fertilizers, especially the use of nitrogen fertilizers, and to apply more mature high-quality farmyard manures or bio-organic fertilizers and trace element fertilizers. It is advisable to carry out soil testing and formula fertilization to provide comprehensive balanced nutrition for jujube trees. The second is the scientific pruning, Xiajian timely. Through scientific pruning to create a reasonable ventilation and transparent environment for jujube trees. In advance of the summer cut to control the growth of new jujube heads, the new jujube heads on the tree should be cut off from the base to reduce nutrient consumption, concentrate nutrition supply buds, ensure flowering and fruit setting; third is to minimize the use of hormones, so that jujube trees according to their own nutritional level To adjust the amount of fruit set; Fourth, timely prevention and control of pests and diseases to reduce pest damage.
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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