Autumn cucumber fertilizer water management to master these details

Cucumber is not only a fertilizer-loving and water-loving vegetable, but also a shallow root crop. In the fruiting period, fertilizer and water management is particularly important, which directly affects the late harvest of cucumber. Cucumber should be fertilized and replenished in different periods according to the growth situation. This can not only avoid or reduce the occurrence of abnormal melons in cucumbers at critical times, but also replenish nutrients for cucumbers in time and improve yield and quality. In addition, the autumn cucumber fertilizer and water management should master these details.

1. The principle of multiple fertilization in a small amount

Cucumber belongs to shallow root crops, and the root system is underdeveloped. In the whole growth and development period of cucumber, its fertilizer and water demand are very large, and the absorption rate of cucumber itself is relatively low. Therefore, in the whole process of cucumber planting, we should achieve the principle of "small amount + multiple times" for fertilizer and water management, that is, more times of fertilization, but less fertilizer each time.

2. Organic fertilizer is the main base fertilizer.

The seedling stage was applied according to the ratio of nitrogen, phosphorus and potassium at 3:2:1. Enter the hanging period, appropriately adjust the ratio of nitrogen, phosphorus and potassium, generally according to the proportion of 2:2:4. If the soil fertility is low, adjust the ratio to 3:2:4. At the same time, to keep the soil moist, moderate watering during drought, the best soil moisture is about 60%.

3. Use irrigation or drip irrigation

From the beginning of seedling stage to before running vine (vine), the application of nitrogen and phosphorus fertilizer is mainly phosphate fertilizer (available phosphorus), the ratio of nitrogen to phosphorus is 3:2, potassium fertilizer can be applied a small amount, but no more than half of phosphate fertilizer. In order to ensure that the base stem of cucumber is stout in this period, and lay the foundation for high yield in the future. We use irrigation or drip irrigation, with a similar proportion of water-soluble fertilizer to achieve the integrated application of water and fertilizer, which can ensure an adequate supply of fertilizer and water. At this stage, we also need to control aphids, underground pests (small land tigers) and other hazards, combined with fertilizer and water in time to carry out comprehensive control.

4. Pay attention to the amount of fertilization.

When applying fertilizer, we should pay attention to the amount of fertilizer application, so as to avoid the occurrence of fertilizer damage such as burning seedlings, rotten roots and retting roots caused by excessive fertilization, and avoid fertilization and watering in high temperature environment.

5. Watering in autumn and winter should be controlled.

Because the water demand of cucumbers in autumn and winter is small, and watering should not be watered with water that is too low temperature. Because the low temperature water will reduce the soil temperature, it is easy to cause frost damage, which is not conducive to root growth; at the same time, it will also reduce the low temperature resistance and freezing resistance of cucumber. Therefore, watering should be carried out during the high temperature period in the middle and afternoon, while paying attention to the topdressing of potassium fertilizer and trace elements, combined with foliar spraying of S-inducer, in order to improve the stress resistance of the plant and promote the yield and income and healthy growth of cucumber.