Detailed Explanation of Key Techniques for Open-Field Vegetable Growing
For open-field vegetable growing, choose varieties with resistance to pests and diseases, high quality and high yield, and good stress tolerance. Before sowing, prepare the soil and apply fertilizer. Then optimize the planting structure, apply soil fertility-building techniques, and carry out integrated pest and disease control. In addition, because there are so many vegetable varieties that can be grown in the open field, some management details also require special attention. For example:
1. Ginger
When growing ginger in the open field, be careful to avoid excessive nitrogen application, which causes imbalanced nutrient uptake; avoid soil-related root problems, which lead to the spread and expansion of disease.
2. Potato
Before planting potatoes, soak the seed potatoes and sprout them. You can use the natural sprouting method or the gibberellin sprouting method; in addition, topdressing and hilling are especially important. Generally, hill up once at the tuber initiation stage (around the 12-leaf stage), and hill up heavily once when the rows close. Topdressing can be used in combination.
3. Chili pepper
Before sowing chili peppers, soak them in clean water for 3-4 hours, then soak the seeds in the appropriate proportion of root rot disinfectant or agricultural streptomycin, and sow only after washing them clean. Generally, the fertilizer requirement during the seedling stage is not large, and application can mainly be concentrated in the fruiting stage.
4. Other points to note
Different vegetables have different planting times. For example, cauliflower is sown from September to November, stem mustard is sown in autumn, celery is planted from early July to December, and bottle gourd is sown in February, and so on. When growing open-field vegetables, sow at the right time according to the growth characteristics of the crop.
Although the growing techniques for most open-field vegetables are similar, there are still certain differences in sowing time, fertilizing time, and other aspects. Determine them according to the actual situation, and do not apply them blindly.