Cucumber calcium deficiency causes
1. Insufficient calcium in the soil is the main reason for the lack of calcium in cucumbers. This situation often occurs in sandy soil, old vegetable gardens, recropping vegetable gardens, and vegetable gardens with low organic matter content.
2. Generally, there will be no calcium deficiency in soils with low calcium content, mainly ammonium ions, potassium ions, sodium ions, magnesium ions dissolved in the soil can have an antagonistic effect with calcium ions, thereby inhibiting plant root calcium The absorption and utilization of ions cause calcium deficiency.
3. The absorption of calcium by the root system is mainly through the root tip. If the root system grows poorly and has poor absorption, calcium deficiency will occur.
4. The fluidity of calcium in plants is poor. The main driving force for transportation in plants is transpiration fluid flow. Therefore, the transpiration intensity is high. The longer the growth time, the more calcium is transported, resulting in less calcium in the upper leaves. .
Calcium supplementation
Cucumber calcium supplementation can prevent physiological diseases, increase calcium nutrition, and effectively prevent various physiological diseases caused by calcium deficiency; it can also increase yield and variety. Calcium can promote root absorption, cell division, and carbohydrate and protein synthesis . Calcium can reduce the activity of ethylene synthase, reduce respiration, inhibit cell senescence, and improve the storage and transportation of fruits. In addition, calcium is an important component of cell wall, which can increase the firmness of cells and organs and increase the firmness of fruits.
Essentials of calcium supplementation
1. Add organic fertilizer to base fertilizer. On the basis of phosphorus and potassium, calcium-magnesium phosphate, superphosphate, calcium nitrate and other calcium-containing fertilizers should be added to sandy soil. For old vegetable gardens, lime powder can be added to supplement the calcium content.
2. Foliar spray fertilizer, you can add 1~2 kilograms of superphosphate per 100 kg of water. After half an hour, the water chestnut is soaked for a period of time. Take the above extract and spray it. You can also choose amino acid calcium and calcium humate to absorb in vegetables Spraying during the peak period of calcium.
3. Scientific application of nitrogen and potassium fertilizers has an antagonistic effect between ammonium ions and potassium ions and calcium ions. When nitrogen fertilizer is high, it will also inhibit the absorption of calcium, so the application of nitrogen and potassium fertilizers should be properly controlled.
4. Increase the application of organic fertilizers. Organic fertilizers are rich in organic matter and a variety of nutrient elements required for crop growth, which have an excellent effect on improving soil and fertility.
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