One Question per Day on the Basic Knowledge of Compound Fertilizers and Functional Fertilizers 6
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True or False: 1. The use of high-chloride compound fertilizers in dry fields can effectively improve the soil and prevent soil compaction. It is beneficial for the growth of various crops. ( ) 2. The applicable range of high-chloride compound fertilizers should be clearly indicated on their packaging. And it has warning statements written on it. ( ) In the compound fertilizers and functional fertilizers section, a daily quiz on basic production knowledge is carried out. We hope that all fellow sailors will participate actively. The purpose of this activity is to review the knowledge we have already learned, and to improve and strengthen everyone’s fundamental theoretical knowledge through answering questions, thereby reinforcing what we already know and helping us recall what we have forgotten. The top 50 answerers will definitely receive a reward. Please reply with the answer hidden; otherwise it will be invalid. To view the hidden method, go to: http://bbs.hcbbs.com/thread-492556-1-1.html. Please do not edit after replying! 1. Error: The use of high-chloride compound fertilizers has certain limitations; they must not be used on crops that are sensitive to chlorine. ) 2. Correct
Wrong, Right. 1. The soil aggregate structure is formed by negatively charged soil clay particles and organic matter being connected together by positively charged polyvalent cations. Polyvalent cations bridge soil particles together to form larger particles, thereby creating soil aggregates. The cations in soil are mainly divalent calcium and magnesium ions. When an excessive amount of phosphorus fertilizer is applied to the soil, the phosphate ions in the fertilizer combine with cations such as calcium and magnesium present in the soil to form insoluble phosphates, which not only results in waste of phosphorus fertilizer but also damages the soil’s granular structure, leading to soil compaction. . When an excessive amount of potassium fertilizer is applied to the soil, the potassium ions in it have a very strong exchange capacity; they can displace the polyvalent cations that are responsible for forming the soil aggregate structure. Since monovalent potassium ions do not possess bridging capabilities, the bridges that hold together the soil aggregates are destroyed, which in turn leads to the breakdown of those aggregates and results in soil compaction. The severe soil compaction resulting from the excessive use of chemical fertilizers is mainly caused by residues of physiologically acidic fertilizers such as chloride ions. It is also related to the decrease in organic matter content in the soil, which leads to a reduction in the number of beneficial bacteria and an increase in the number of harmful bacteria. Therefore, increasing the use of organic fertilizers can activate the soil, improve its structure, break down soil compaction, and enhance the efficiency with which chemical fertilizers are absorbed and utilized. 2. In crops that are sensitive to chlorine, excessive levels of chloride ions hinder the conversion of sugar into starch; as a result, the starch content in root and tuber crops decreases ； Chloride ions can promote the hydrolysis of carbohydrates, while watermelons, beets, and grapes will have reduced sugar content ； A high concentration of chloride ions affects the burnability of tobacco, causing cigarettes to go out easily ； High levels of chloride ions often cause damage to the seedlings of sensitive crops. Tobacco, potatoes, sweet potatoes, sugarcane, watermelons, grapes, citrus fruits, beets, apples, tea leaves, Chinese cabbages, peppers, lettuce, amaranth, and others are all chlorine-sensitive crops. Chlorine has an adverse effect on Solanaceae crops. Soybeans and string beans have weak resistance to chlorine.
Reply to 1# Chemical Gas Purification: 1. Wrong 2. Right