In recent years, farmers have not paid much attention to the importance of land fallow in agricultural production. After consecutive years of cultivation, the quality of the soil has dropped drastically, causing diseases and other continuous obstacles. With the rise of biological bacterial fertilizer, people's fertilization concept has been changed, but in actual application, it has not been able to maximize the effectiveness of biological bacterial fertilizer. A few days ago, the reporter interviewed Liu Cunshou, associate professor of the School of Resources and Environment of Northwest Agriculture and Forestry University, and gave guidance to farmers on the scientific use of biological fertilizer.
The optimum temperature for application of bacterial fertilizer is 22°C~35°C, which is lower than 5°C and higher than 40°C. The application effect is poor. It is not suitable for crop fields under high temperature, low temperature and drought conditions.
The application of plots should be suitable for soils with high sulfur content and rust paddy fields. It is not appropriate to apply biological bacterial fertilizers because sulfur can kill bacteria. For flooded paddy fields, it is generally not applied. Spraying will be better. For bioorganic fertilizers, acupuncture or furrow application is used, and flushing is not recommended. Compound microbial fertilizers are mostly applied by foliar spraying and flushing.
The application period should pay attention to biological bacterial fertilizer is not quick-acting fertilizer, generally do base fertilizer, if the topdressing, in the critical period of nutrition of the crop and a week before the absorption of a large number of nutrients, the effect is good. In the economic crops such as vegetables, the microbial inoculants should be applied in a centralized manner using roots and roots, and the amount of microbial inoculants should not be excessive.
Mixed application should be careful not to use bacterial fertilizer mixed with fungicides, insecticides, herbicides and sulfur-containing fertilizers (such as potassium sulfate, etc.) and plant ash, because these drugs and fertilizers are very easy to kill biological bacteria. Or apply the fungicide first, after 48 hours, then weeding and weeding. If seed dressing, do not mix with seeds that have been mixed with fungicide. It should also be prevented from mixing with untransformed farmyard fertilizers.
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