Basic Knowledge of Compound Fertilizers and Functional Fertilizers – One Question per Day 118

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Multiple-choice question: Which of the following statements are correct regarding the proper application of silicon fertilizers? ( ) (1) Application range. The soil’s ability to supply silicon is an important criterion for determining whether to apply silicon fertilizers. The greater the silicon deficiency in the soil, the better the effect of fertilization on increasing yields; therefore, silicon fertilizers should be prioritized for areas and soils with silicon deficiencies. Different crops have varying levels of silicon demand; applying silicon fertilizers yields significant benefits for crops that require silicon. Crops for which silicon application has a notable effect include gramineous crops such as rice, wheat, and corn, among which rice is a typical example of a crop that requires silicon. Since silicon fertilizers can improve soil quality, they should be applied to contaminated farmlands as well as protected lands that have been in use for many years. (2) Application method. Silicon fertilizer does not tend to clump, does not deteriorate easily, has good stability, and there are no losses due to seepage or volatilization; it also features a long duration of effectiveness. Therefore, silicon fertilizer does not need to be applied every year; it can be applied every other year. Its application method can be to use it together with organic fertilizers and nitrogen, phosphorus, and potassium fertilizers as base fertilizers ； Water-soluble silicon fertilizers with high nutrient content can be used as base fertilizers or topdresses, but the timing of application as a topdress should be as early as possible. For example, in rice cultivation, it should be applied before the rice enters the booting stage. (3) Amount used. The application rate of silicon fertilizer should be determined based on the content of available silicon in the soil of each plot and the content of water-soluble silicon in the silicon fertilizer. In soils with severe silicon deficiency, an appropriate larger amount can be applied, while in soils with mild silicon deficiency, less should be applied. For water-soluble silicon fertilizers with an effective silicon content of 50–60%, 6–10 kilograms can be applied per mu ； For steel slag silicon fertilizer with an effective silicon content of 30-40%, 30-50 kilograms can be applied per mu ； For plots with an effective silicon content of less than 30%, 50–100 kilograms can be applied per mu. The compound fertilizer and functional fertilizer sections carry out a daily quiz on basic production knowledge. We hope that all marine enthusiasts 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, 2, 3