1. Add organic fertilizer. Due to the comprehensive nutrition of organic fertilizers, generally 3000-4000 kg of fermented organic fertilizer per mu is used as the base fertilizer. The amount of base fertilizer can be applied as a whole plough layer; the amount is small and can be applied as a seed fertilizer.

2. Administration of superphosphate. Because superphosphate contains not only phosphorus, but also a large amount of gypsum, which is also called calcium sulfate, it can increase calcium fertilizer for the soil. Generally, 30-40 kg of calcium phosphate is applied per acre for base fertilizer application.

3. Spray boron fertilizer. Boron is a necessary nutrient for the normal development of plant flowers and reproductive organs. Sandy soil and severely deficient soil can apply 1 kg of borax per acre as base fertilizer or seed fertilizer. In general, the soil can be topdressed 2 to 3 times with 0.2%-0.3% borax solution at the initial flowering stage.

Spray molybdenum fertilizer. Molybdenum fertilizer can promote the development of peanut nodules, the leaves are dark green, the growth is strong, and the fruit is full and full. The root dressing is performed with 0.3%-0.5% ammonium molybdate solution per acre at the initial flowering stage or the lower needle-binding stage.

Deep application of potassium fertilizer. Potassium fertilizer should be applied deeper below the result layer to prevent excessive potassium in the resulting layer, affecting the absorption of calcium and increasing rotten fruit.

4. If the peanut seedlings are weak and the leaves are light, 0.3% urea and 0.3% potassium dihydrogen phosphate solution can be added. Once every 7-10 days, continuous spraying 2-3 times can reduce the peanut shell rate and improve the firmness. The rate can generally increase production by more than 10%.

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What problems should we pay attention to when using solar energy for power supply?
1. The whole day sunshine time of monitoring points along the expressway shall be considered first. As the main energy of the power supply system comes from sunlight, the sunshine exposure time must be considered, which is particularly prominent in mountainous areas where there is little sunshine, but not in plain areas.
2. Working power, working voltage and current of monitoring facilities along the expressway. After considering the power of the whole load, we can choose the solar panel that is more suitable for the long-term operation of the equipment.
3. If the battery discharge cannot make the monitoring equipment work for a long time, the monitoring system will be paralyzed in the rainy season, but the expressway is prone to accidents in the rainy season.
4. The conversion rate of solar cells is low. At present, the conversion rate of solar cell power supply is only about 20%, that is to say, if the silicon solar cell is spread over a square meter, 100~200W of power can be obtained, which is obviously not enough to meet the long-term operation of the monitoring equipment. Of course, with the development of technology and the improvement of the quality of crystalline silicon cells, we can obtain more power resources in a smaller area in the near future.

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