What is the role of silicon fertilizer for rice? An analysis of the harm of excessive potassium fertilizer
At present, there are countless people growing rice in our country. Our country has a large population, and rice is also the main food eaten by our people. If you want rice to grow well, then fertilizing is crucial, but there are also techniques when applying it. If some fertilizers are applied too much, it may cause a lot of harm. So what happens if the common potassium fertilizer is applied excessively?
What is the role of silicon fertilizer for rice
1. Silicon fertilizer can increase rice yield and improve rice quality. Most paddy soils in the north are albic soils and meadow soils. Old paddy fields take up a large amount of silicon from the soil every year, causing severe silicon deficiency in the paddy fields. Rice grows poorly, the stems are slender and weak, the leaves change from upright to weeping willow-like leaves, there are many empty and shriveled grains, the 1000-grain weight decreases, lodging is easy, and rice blast, striped stem borer and other diseases and pests are prone to occur.
2. Silicon fertilizer helps improve photosynthesis in rice. After rice absorbs silicon, silicified cells are formed, the strength of the cell walls is enhanced, the plant mechanical tissue develops, the plant type is upright, and the stems and leaves are erect. The angle between rice stems and leaves is reduced by 25.4 degrees, which helps ventilation, improves light penetration and dense planting, improves photosynthesis on the rice leaf surface, and helps the accumulation of organic matter, thereby increasing rice yield.
3. Silicon fertilizer can enhance the ability of rice to resist diseases and pests. The formation of silicified cells thickens the surface cell walls of rice and increases the cuticle, thereby enhancing resistance to diseases and pests, especially with relatively significant effects on rice blast, rice sheath blight, rice brown spot, and so on.
What is the harm of excessive potassium fertilizer to rice
1. Excessive potassium application not only wastes precious resources, but also causes a decline in the crop's absorption of cations such as calcium, causing leafy vegetable heart rot, apple bitter pit, and so on,
2. Excessive application of potassium fertilizer will cause soil environmental pollution and water pollution.
3. Excessive application of potassium fertilizer will weaken crop production capacity
How much silicon fertilizer to use per mu
The amount of silicon fertilizer applied should be determined according to the content of available silicon in the soil of different plots and the content of water-soluble silicon in the silicon fertilizer. Soil severely deficient in silicon can be given a moderately larger amount, while soil mildly deficient in silicon should be given less. For water-soluble silicon fertilizer with an available silicon content of 50-60%, 6-10 kg can be applied per mu; for steel slag silicon fertilizer with an available silicon content of 30-40%, 30-50 kg can be applied per mu; for those with an available silicon content below 30%, 50-100 kg can be applied per mu.
Fertilization methods for high-yield rice
1. Base fertilizer. Base fertilizer is the foundation of rice growth, so when applying base fertilizer, it must be sufficient. Base fertilizer occupies a large proportion in the rice growth process. Usually we generally spread some farmyard manure and ammonium fertilizer. In fact, the best way to use base fertilizer is a mixed application of decomposed fertilizer and organic fertilizer, along with a small amount of chemical fertilizer. The chemical fertilizer is mainly phosphate fertilizer and potassium fertilizer, and of course a little nitrogen fertilizer can also be added. However, it is recommended to try not to use too much chemical fertilizer such as nitrogen fertilizer in the early stage of rice growth. When applying base fertilizer, apply it as deeply as possible, so that fertility can be maintained.
2. Tillering fertilizer. Tillering fertilizer is generally applied about one week after transplanting. The amount of this fertilization should not be too aggressive, because rice tillering only needs a moderate amount of fertility. If it is too aggressive, it will cause rice to produce many ineffective tillers, which will not only fail to increase rice yield but will also reduce yield. The best fertilizer for the rice tillering stage is quick-acting organic fertilizer plus a little urea and livestock manure. Tillering fertilizer should generally be carried out in batches, in order to prevent excessive application, so generally apply a little less at a time. If rice tillering in the field is relatively slow, then apply one more topdressing.
If silicon fertilizer is applied well, it can make rice grow well and can also prevent some pests and diseases. If potassium fertilizer is applied too much, then it may cause rice to become diseased and can also pollute the environment. Usually when applying silicon fertilizer, the amount per mu should be determined according to the silicon content in it.