Currently, the degradation of soil conditions in old vegetable fields has become a widespread issue, leading to serious pest and disease problems. As a result, the quality of vegetables and their market competitiveness have declined significantly. The causes and solutions are outlined below:
First, the main causes of soil degradation.
The primary cause is the excessive use of chemical fertilizers, which leads to soil compaction and reduced aeration. Second, there is an increasing problem of soil salinization, especially in areas with poor drainage or over-irrigation. Third, the neglect of trace element fertilizers results in nutrient deficiencies that hinder vegetable growth. Lastly, continuous monoculture over many years can lead to the buildup of harmful pathogens and pests in the soil, making it more prone to diseases.
Second, effective management measures.
1. Crop rotation: It is not advisable to grow the same type of vegetable in the same field season after season. Instead, alternating crops—such as planting melons after onions—can help reduce the occurrence of pests and diseases. Including legumes like peas or clover in the rotation can naturally increase soil nitrogen through the action of rhizobial bacteria. Certain plants, such as mustard or broad beans, can also absorb phosphorus and potassium that are otherwise difficult for regular vegetables to utilize. These plants can later be incorporated into the soil to improve its fertility and nutrient balance.
2. Rational farming practices: Applying organic fertilizers can gradually improve soil structure and deepen the tillage layer. Winter plowing combined with summer soil preparation helps promote soil maturation, ensuring loose and fertile soil conditions in vegetable fields.
3. Use of organic fertilizers and micronutrients: Increasing the application of organic matter helps form humus through microbial activity, improving soil structure, water retention, and nutrient-holding capacity. This also helps alleviate soil salinity. Based on the specific needs of different vegetables, a balanced fertilizer plan should be developed. For example, applying 1–1.5 kg of zinc sulfate per acre as a base fertilizer, 0.3–0.5 kg of borax per acre, and 0.1–0.2 kg of ammonium molybdate per acre can provide essential micronutrients. Foliar applications can include 0.05%–0.2% zinc sulfate, 0.1%–0.25% borax, and 0.02%–0.05% ammonium molybdate to meet the trace element requirements of vegetables.
4. Promoting the use of bio-fertilizers: These eco-friendly products help enhance soil structure and provide a wide range of nutrients. They support beneficial microorganisms, promoting long-term soil health and sustainable agricultural practices.
Dietary Supplements,Korean Ginseng,Elite Ginseng,Elite Extract Of American Ginseng
Yanbian Dangun Pharmaceutical Co., Ltd. , https://www.tanjunpharmacy.com