"Sanqiu" combined with fertilization can increase efficiency skillfully. How to combine fertilization?

Sanqiu refers to the autumn harvest, which is the third busy agricultural season in China. The other two are spring ploughing and spring sowing and three rivers, which usually end from the middle and late September to the middle of November. During this period, it is necessary to harvest autumn crops such as rice and corn, sow monthly animals such as winter wheat and rape, and conduct field management of autumn crops before winter as soon as possible. The key points of autumn planting and autumn crown are stopping before sowing and rational application of basic fertilizer. In addition, vegetables planted in autumn, harvested in early winter, overwintering vegetables and fruit trees harvested in autumn, such as Chinese cabbage, should be comprehensively managed by fertilization in autumn. Early spring crops, such as spring wheat and potatoes in the north, should also be returned to the fields in combination with the stop of work after the harvest in the previous year, and organic fertilizer should be applied < P > It is said that the plan for one year lies in spring, but in fact, the work of overwintering crops and fruit trees in Sanqiu involves two or more years. Need to be better managed. Autumn sowing crops generally need to apply basic fertilizer, and there is plenty of time to apply organic fertilizer in soil preparation. Therefore, autumn crop fertilization has the following main characteristics. Mainly based on basic fertilizer. The basic fertilizer before sowing and after fruit trees in the moon hole is to meet the nutrient requirements of crops in the whole growth period and before the moon hole. Generally, the basic fertilizer should be applied in time and early.

Generally, it is recommended to use organic fertilizer as the main fertilizer or apply organic fertilizer to prepare appropriate NPK fertilizer and necessary medium and trace element fertilizer. Early spring crops such as potatoes and spring wheat planted in the second year also advocate returning straws to the fields after the autumn harvest this year, and applying some organic fertilizers and phosphorus and potassium fertilizers. Combined with stopping sowing. Proper deep tillage or subsoiling can create favorable conditions for the root growth of autumn sowing crops and the fertilizer efficiency of organic fertilizer and chemical fertilizer. Taking winter wheat as an example, applying chemical fertilizer in autumn should be combined with stopping and improving sowing quality for comprehensive management.

Production often stops, the sowing quality is poor, and the fertilization method unreasonably affects the seedbed, which leads to problems in fertilizer quality. Therefore, it is necessary to do a good job in Sanqiu management and agricultural mechanization service. Preparing fertilizer to stop sowing requires proper soil moisture, and dry fields need irrigation or rattan sowing. Organic fertilizer should be cooked in advance, and chemical fertilizer should be selected in advance to avoid wrong tillage. The maturity of organic fertilizer takes time, and the organic fertilizer applied this season should be piled up last season. The state actively advocates the allocation and application of supporting fertilizers in combination with soil fertilizer determination technology, and therefore, various related fertilizers must be prepared at least 2 days in advance.