Hello everyone, I am a self-media creator. Today, we will delve into the challenges faced by China, as the world's largest citrus producer, while the citrus industry is booming across the country, especially the relatively low overall yield level of citrus. The geographical distribution of citrus orchards, the differences in soil conditions, and the poor management level in the later stage have laid the groundwork for the differences in citrus yields. In this context, there are some trace element deficiencies in citrus orchards, especially zinc, iron, manganese, boron and other elements, which have become key problems that need to be solved.
First, let's talk about the role of zinc (Zn) and its solutions. Citrus is very sensitive to zinc, which is a key reproductive nutrient for citrus. Zinc can mobilize the formation of endogenous hormones in citrus, promote flower bud differentiation, and prevent and reduce yellowing of citrus leaflets. Zinc deficiency can affect the tree's growth point and apical buds, causing the branches and leaves to shrink or stop growing, forming mottled leaflets. In order to solve the problem of zinc deficiency, the pH can be adjusted in acidic or alkaline soils, organic fertilizers can be added, and zinc-containing trace element fertilizers can be applied to improve the effectiveness of zinc in the soil, so as to enhance the absorption of zinc by citrus.
Next, there is the role of iron (Fe) and its solutions. The main function of iron is to promote the activity of some important enzymes in plants, and promote the flower bud differentiation, spring shoot germination, flowering, young fruit and coloring stage of citrus. Iron deficiency causes leaves to lose green, first appearing yellowish-white on new shoots and leaves, and then gradually thinning the leaves. Iron deficiency is easily caused by alkaline soil or high humidity and poor aeration. In order to alleviate this problem, we can choose rootstocks with high iron absorption rate, adjust the pH of the soil, spray chelated trace element fertilizers containing iron in a timely manner, strengthen drainage and irrigation work, and prevent drought and flooding.
Then there is the role of manganese (Mn) and its solutions. Manganese is an indispensable trace element for the growth and development of citrus, and plays a role as a catalyst for photosynthesis and metabolic activities. The symptoms of manganese deficiency in citrus are yellow-green leaves and green loss between veins, and in severe cases, the veins of the leaves gradually expand to form gray-white spots. In the production areas prone to manganese deficiency, it is recommended to choose rootstocks with high absorption efficiency of manganese elements, adjust soil pH, flush application of organic seaweed fertilizer containing comprehensive trace elements, and spraying foliar fertilizer containing complexed mancozeb to help prevent and alleviate the symptoms of manganese deficiency.
Finally, there is the role of boron (B) and its solutions. Boron is closely related to fruit physiology and quality, and boron deficiency in plants will lead to a significant increase in the synthesis of abscisic acid and ethylene in plants, resulting in various physiological metabolic disorders and morphological changes. Boron deficiency in citrus is characterized by twisted young leaves, yellowing of leaf veins, and small, deformed fruits. In acidic red loam or sandy soils, boron is easily deficient. In order to solve this problem, water-soluble boron fertilizer and liquid boron containing boron can be selected, used continuously for many times, foliar fertilizer is sprayed in a timely manner, and the soil pH is adjusted at the same time, and organic fertilizer is added, which helps to improve the boron absorption efficiency of citrus.
Through the solutions to these four common trace element deficiencies, we can better understand the needs of citrus in the process of growth and development, and how to prevent and correct these deficiencies through scientific management methods. The comprehensive application of rational fertilization, soil improvement, and foliar fertilizer spraying is expected to provide strong support for the sustainable development of the citrus industry.
Big Harvest 321 Spring Seed Festival