Six Ways to Break the Barrier of Continuous Vegetable Cropping

Facility vegetables with continuous cropping obstacles are manifested by poor growth and development, and decreased yield and quality. In extreme cases, even dead vegetable seedlings, no seedlings or poor seedlings appear, root vitality decreases, browning, lateral roots decrease, and pests and diseases increase.

The author proposes to start from six major aspects to overcome or reduce the obstacles to continuous cropping of facility vegetables and promote the sustainable development of facility vegetable production.

Optimize vegetable grafting rootstocks. At present, grafting has become an effective means for facility vegetables to overcome soil-borne diseases. Cucumber grafting seedlings in various places basically eliminated black seed pumpkin rootstocks, but using white seed pumpkin or yellow seed pumpkin rootstock varieties, although the quality of cucumber is improved and the color is bright, it will reduce the cold resistance of the plant and the yield will be slightly reduced. For the production of watermelon grafting, it is generally believed that the rootstock of large-seed pumpkin is better than that of small-seed pumpkin, and it is not easy to split the melon, while the black-skin watermelon rootstock must be of the gourd type. For the numerous varieties of rootstock grafted with fruits and vegetables in the current market, screening and optimization must be carried out to achieve the goal of not only reducing or overcoming the obstacles of continuous cropping of facility vegetables, but also improving the yield and quality of vegetables.

Pay attention to the physiological diseases of vegetables. The survey showed that, in addition to soil-borne diseases, the most intuitively reflected types of continuous cropping obstacles in facility vegetables are soil nutrient imbalance (i.e. physiological diseases), vegetable deficiency diseases such as facility tomatoes and cucumbers, and other unexplained physiological diseases that have increased year by year and should be caused. With enough attention from everyone, relevant research work needs to be strengthened urgently.

Plow deeply and turn the soil in the facility. At present, the cultivation of the facility soil mainly relies on small rotary tillers. The ploughing depth is about 15 cm, causing the plow bottom to become shallow. It not only affects the growth of vegetable roots and the increase of yield, but also is not conducive to overcoming the secondary salinization and compaction of the soil. As a matter of fact, in some places, artificial soil turning of 30 to 40 cm is adopted, the degree of soil compaction and salinization is reduced, and other continuous cropping obstacles are also mild. Therefore, deep ploughing is an effective measure to reduce the obstacles to continuous cropping of facilities and maintain the health of the land.

Apply new varieties and new technologies. The investigation shows that some sheds that have been cropped continuously for 20 to 30 years are still in production and the output has not decreased significantly, all of which are related to vegetable farmers consciously or unconsciously taking some practical technical measures. In fact, some traditional or simple technical measures adopted by the vast number of vegetable farmers, such as deep turning, soil drying, stubble adjustment, leisure, and uncovering shed films, have the ultimate effect of overcoming or reducing the obstacles to continuous cropping of facilities. It is necessary to attach importance to technical training for vegetable farmers, strengthen the popularization and promotion of practical and new technologies, actively take countermeasures, and unremittingly adopt crop rotation, grafting, application of straw fertilizer, application of biological fertilizer, soil improvement, biological control, and soil disinfection. These measures can significantly reduce or eliminate obstacles to the continuous cropping of facility vegetables.

Continue to apply biological fertilizers. At present, it has been proved that the application of biological fertilizers has a relatively strong effect on reducing the obstacles to continuous cropping, but the activity and reproduction of biological bacteria will also fluctuate due to the impact of soil conditions. Therefore, the application of biological fertilizers is not done once and for all, and annual application and stubble application must be emphasized in order to highlight its effect. In particular, the high-temperature stuffy shed technology measures commonly adopted in various places can kill the beneficial bacteria in the soil while disinfecting, and the beneficial bacteria can only be supplemented by the application of biological fertilizer.

It is worth noting that the current flood of bio-fertilizers and instant fertilizers in the agricultural material market should be carefully screened and try to choose large companies or well-known brands.

Pay attention to the problem of chicken manure pollution. Chicken manure is a high-quality organic fertilizer that is widely used everywhere, but currently there are practical problems such as large use, unripe and poor quality of processed chicken manure, especially the secondary salinization of facility soil caused by continuous application and excessive heavy metals. Indisputable fact. It is recommended to increase the application of cow manure, sheep manure and straw manure to improve the structure of the base fertilizer for the facility.

Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone

Powder Portable Fire Extinguisher

Powder Portable Fire Extinguisher,Fire Extinguisher Portable,Portable Fire Extinguisher,Dry Powder Hanging Fire Extinguisher

JIANGSU NEW FIRE FIGHTING TECHNOLOGY CO.,LTD , https://www.newayfire.com