Deep ploughing refers to a deep ploughing method in which loose soil tools such as deep-lying spatula or chisel plow are used to loosen the soil without inverting the soil layer. It is suitable for the formation of a plough bottom layer after long-term tillage, and there is a layer of clay hard disk and white pulp layer. The land with thick soil and thin layer should not be deep turned. Deep fertilization means that the formula fertilizer is applied to the soil in depth according to agronomic requirements, so as to provide nutrients for the crop at different stages and meet the nutritional needs of the growth and development stage. Relevant experts believe that the existing deep-seeding and tillage machinery can not yet achieve the perfect realization of a large number of practical problems of deep-rooted fertilizer. To this end, deep-seated farming should be combined with deep fertilization.
The current deep loosening machines, including rotary cultivators and chisel shovels, are difficult to successfully complete the requirements for deep application of organic fertilizers and fertilizers. Reasons: First, the mechanical design of the lack of power, with no movement; Second, different models are non-turning plow, it is difficult to turn a lot of organic fertilizer or chopped straw, to the soil below, can only be done in the shallow The mixing in the plough layer causes the wheat species after sowing to be in a plough layer containing a large amount of organic fertilizer or crushed straw. These coarse materials consume a lot of water, nitrogen forms and competes with the wheat seedlings to compete for water and cause soil layers. Running empty and running, not only does it have poor seedling conditions after sowing, but it does not reach seedlings and seedlings. It may also lead to weakness and death of wheat seedlings during the spring drought in the coming year. Concerning the current problem of shallow straw and poor quality of soil preparation in the field of straw returning, the farmers' response is to increase the amount of sowing. In some areas, the wheat sowing has been increased to 60 kg per mu.
Recommendations: 1. Deep-tillage should be combined with deep fertilization. 2. The location of fertilization in the existing deep-sown and ploughed wheat sowing is not a full-layer base fertilizer, but is between the seed fertilizer and the base fertilizer. First of all, we must pay attention to the appropriate amount of chemical fertilizers, especially the amount of nitrogen fertilizer can not be applied one-time, it is recommended that the highest nitrogen fertilizer fertilizer, or one-third of the total application of nitrogen. If nitrogen fertilizers are applied, concentrated distribution in deep roots will not only burn seedlings but also cause waste. Do not position the amount and role of this fertilization on the requirements of whole root basal fertilizer. Phosphate fertilizers are the main factors in the proportion of nutrients. Fertilizer varieties can use phosphorus diammonium or superphosphate plus urea, or superphosphate plus ammonium sulfate, ammonium bicarbonate or ammonium chloride. In particular, it is reminded that half or more of the nitrogen fertilizer should be used later in the year and then reapplied at the jointing stage. If ternary compound fertilizer is used, it is better not to choose high-nitrogen compound fertilizers. They tend to cause inconsistent proportions of nitrogen and phosphorus and do not meet the demand for wheat growth before winter. This results in the lack of seedlings before winter and is not conducive to overwintering and returning green in the coming year. .
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