A fertigation method
A technology for irrigating and fertilizing and fertilizing amount, applied in the field of agronomy, can solve the problems such as back warping and increasing solute concentration in the water flow at the end of the border, and achieve the effects of improving the utilization rate, reducing the loss of fertilizer, and improving the uniformity of distribution.
Active Publication Date: 2019-04-09
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology
[0006] In order to solve the problem in the prior art that the solute concentration of the water flow at the tail of the border increases and the "back warping" phenomenon occurs, the embodiment of the present invention provides an irrigation and fertilization method
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Embodiment 1
[0152] Based on the method provided by the embodiment of the present invention, the following takes a certain field in Daxing District, Beijing as an example to illustrate the irrigation and fertilization method provided by the embodiment of the present invention; The effect of fertigation methods.
[0153] The field is divided into 18 border fields, and the specification of each border field is 100m long and 1.7m wide. The embodiment of the present invention divides the border fields into 10 sections of border fields on average along the length of the border (such as Figure 8 shown), the length of each section of sub-field is 10m, and the width is 1.7m.
[0154] The field is planted with winter wheat, and the experienced nitrogen application rate of local farmers in Daxing is 200kg / hm 2 . In order to measure the surface water flow and the fertilizer content in the soil as soon as possible in this embodiment, soluble ammonium sulfate is selected as the nitrogen fertilizer u...
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The invention discloses an irrigation and fertilization method, and belongs to the technical field of agriculture. The method comprises the following steps: spreading a fertilizer on a ridged field, wherein the fertilizing amount is controlled to be reduced gradually from the head to the tail of the ridged field; introducing border irrigation water current from the head of the ridged field, so that the border irrigation water current flows from the head to the end of the ridged field. In the method, a non-uniform fertilizer spreading manner is adopted, namely, the fertilizing amount is controlled to be reduced gradually from the head to the end of the ridged field, so that the difference among fertilizing amounts of different areas in the ridged field due to erosion of the fertilizer by the border irrigation water current can be reduced, the distribution uniformity of the fertilizer on the ridged field is improved, the phenomena that the solute concentration of the border irrigation water current on the tail of the ridged field increases since a practical fertilizing amount at the tail of the ridged field is larger than an average fertilizing amount when the border irrigation water current arrives at the tail of the ridged field is avoided, the fertilizer loss is reduced, and the utilization rate of the fertilizer is increased.
Description
technical field [0001] The invention relates to the field of agricultural technology, in particular to an irrigation and fertilization method. Background technique [0002] During the growth of crops, irrigation and fertilization are usually required to promote the growth of crops and increase the yield of crops. Among them, fertigation includes surface irrigation, underground irrigation and injection irrigation, and surface irrigation has the characteristics of convenient irrigation, low cost, and convenient operation and management, so it occupies a dominant position in the field of fertigation. [0003] Among them, manual spreading is a common implementation method in ground irrigation, including: first spreading the fertilizer evenly in the field; While pushing forward with a thin water layer along the length of the furrow, it carries the fertilizer and infiltrates into the soil. [0004] The inventor finds that the prior art has at least the following problems: [00...
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IPC IPC(8): A01C23/00A01C23/04
CPCA01C23/00A01C23/042Y02P60/21
Inventor 章少辉许迪白美健张凯
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES