What are the benefits of applying silicon fertilizer to rice? Explained clearly in one article
What are the benefits of applying silicon fertilizer to rice? Please introduce. Rice is a typical silicon-accumulating and silicon-loving crop, with a relatively high demand for silicon, close to that for nitrogen, phosphorus and potassium, ranking fourth. The results of trials and applied research show that silicon plays a considerable role in rice growth. 1. Applying silicon to rice can enhance the rice's resistance...
What are the benefits of applying silicon fertilizer to rice? Please introduce
Rice is a typical silicon-accumulating and silicon-loving crop, with a relatively high demand for silicon, close to that for nitrogen, phosphorus and potassium, ranking fourth. The results of trials and applied research show that silicon plays a considerable role in rice growth.
1. Applying silicon to rice can enhance the rice's resistance to pests and diseases
After silicon is applied to rice, the rice's resistance to pests and diseases is enhanced, and the degree of damage from pests and diseases is reduced. Applying silicon to rice can improve the plant's light-receiving posture, reduce leaf drooping, improve photosynthesis, form silicified cells, thicken the epidermal cell walls of stems and leaves, increase the cuticle layer, enhance stem hardness, make the leaves stand upright, keep the stems neat and upright, and develop a strong root system, thereby improving disease and pest resistance. In particular, resistance is strengthened against rice blast, leaf spot, stem rot, rice bacterial leaf blight, the rice stem borer and the striped stem borer. After silicon is applied to rice, the silicon content in the plant increases and the rigidity of the vascular bundles is enhanced, which can increase the internal ventilation and air permeability of the plant, promote root growth, and activate phosphorus in the paddy field water, prompting phosphorus to circulate within the rice plant, improving the utilization rate of phosphate fertilizer, and reducing lodging from excessive vegetative growth caused by excessive nitrogen fertilizer application; at the same time, it can also prevent root rot and premature aging of rice, and in particular plays an important role in thoroughly curing toxic root rot in rice.
2. Applying silicon fertilizer can improve saline-alkali paddy fields and reduce pesticide pollution of the soil
Applying silicon fertilizer has a unique effect on the treatment of saline-alkali paddy fields. The silicon dioxide and calcium and magnesium ions contained in silicon fertilizer can be quickly replenished into soil that has suffered large losses of elements; at the same time, these elements in silicon fertilizer can undergo a replacement reaction with the large amounts of sodium ions accumulated in saline-alkali paddy fields to form new compounds, reducing harmful components, replenishing the silicon dioxide and calcium and magnesium ions urgently needed for rice growth, enhancing rice resistance, and improving rice yield and quality. Agricultural pollution comes from people's control of crop pests and diseases. Applying silicon fertilizer can cause rice to produce relatively hard silicified cells, making it harder for pests to bite through, thereby reducing pest and disease damage and lowering the amount of pesticides used, thus reducing pesticide pollution.
3. Applying silicon fertilizer to rice improves drought resistance and lodging resistance, with significant yield-increasing effects
Rice is a crop with a relatively high silicon requirement. Most paddy soils in northern China are albic soils, meadow soils and meadow black soils. In addition, old paddy fields that have been continuously cropped for many years extract large amounts of silicon from the soil every year through the rice they produce, causing severe silicon deficiency in paddy fields. Rice grown in silicon-deficient soil grows poorly, with slender and weak stems; leaves that should be upright at 20-30 degrees become weeping willow-like leaves; tillering is reduced, heading is delayed, there are many empty and shriveled grains, the 1000-grain weight decreases, resistance is poor, lodging occurs easily, and there is easy infection and occurrence of rice blast, sheath blight, the striped stem borer and other pests and diseases. Silicon is an important component within the rice plant. In optimized formula fertilization for rice, people often attach great importance to the application of macronutrient fertilizers such as nitrogen, phosphorus and potassium, while neglecting the combination with silicon fertilizer. In fact, the silicon element has a great impact on the growth and development of rice. Although silicon is not a nutrient element required by all crops, it has an obvious yield-increasing effect on rice. Rice is a crop that absorbs relatively large amounts of silicon. The silicic acid content in the rice plant is about 10 times that of nitrogen and about 20 times that of phosphorus. Silicon deficiency in rice has become an important factor limiting increases in rice yield. After rice absorbs silicon, the epidermal cells of the rice plant can become silicified, the stems become thick and strong, the leaves stand upright, reducing shading, photosynthesis is enhanced by 15-20%, lodging resistance is enhanced by about 85%, the leaf angle is reduced, canopy photosynthesis is enhanced, and drought resistance and water-saving capacity are enhanced, generally saving about 30% of water and increasing yield by 20% to 30%.
4. Application methods for silicon fertilizer
When applying silicon fertilizer to rice, it should be applied to the soil as a base fertilizer together with fertilizers such as nitrogen, phosphorus, potassium and zinc. It is best to broadcast it before plowing or before water harrowing, so that after water harrowing the fertilizer is distributed throughout the whole layer. The standard application rate of silicon is 1 to 1.3 kg per 667 sq m (1 mu).
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