(Correspondent Li Fangfang) Chloride ions are a very small part of plants that must be nutritious, but plant roots are more sensitive to chloride ions. When a certain range (ie concentration) is reached, dehydration or salt damage (referred to as burning roots) will occur. In addition, Chloride ions can also cause certain damage to the plant root environment, soil compaction, affecting the absorption of metal elements, soil salinization, and hindering plant growth and leading to death.
On April 26, Xinjiang Zhenguanda Agricultural Technology Co., Ltd. accepted a cherry tree death case, in order to find out the death of a cherry tree planted by Wang, a villager in Zhaoyuan City, Shandong Province, and the long-term irrigation chloride ion and total salt content exceeded the standard. After accepting the commission, the company appointed the appraisers Gao Shengliang and Zhao Yujiang to form an appraisal team to verify and analyze the relevant information provided by the parties: The “Inspection Report†of the Zhaoyuan Inspection and Testing Center in Shandong Province showed that the water Sample test result: chloride content is 590㎎/L, technical requirements: chloride content ≤250㎎/L. Yantai Ludong Analysis and Testing Co., Ltd. "Test Report" water sample test results: chloride content 629㎎/L, "Farmland Irrigation Water Quality Standard" GB5084-2005 limit requirements: chloride content ≤ 350㎎/L; total salt content 3490㎎/L, "Farmland Irrigation Water Quality Standard" GB5084-2005 limit requirement: the total salt content is 1000㎎/L.
Wang said that the above two test reports were sampled and tested at the same water source at different times. From 2015 to 2018, the cherry trees were irrigated with this water 10 times a year for four consecutive years, which eventually caused the cherry trees to die.
(The picture comes from the Internet)
The senior agronomist of the unit said loudly: Excess total salt content causes physiological drought, special ion poisoning and nutritional imbalance to plants, which not only inhibits plant growth, but also exerts a strong toxic effect on plants; and chloride ions are reaching a certain level. At high concentrations, root burning will occur, hinder plant growth, and ultimately lead to death.
The cherry tree is a chlorine-free tree species and is very sensitive to chloride ions. When the absorption reaches a certain level, it will obviously affect the yield and quality, and even cause death. Wang Mou's water source for irrigating cherry trees has nearly twice the chloride ion and more than three times the total salt content. The four consecutive years of irrigation are the main cause of cherry tree death.
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