A UAV efficient boron and magnesium application method based on detecting the spad value of rice leaves
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A drone and rice technology, applied in fertilization methods, rice cultivation, fertilization devices, etc., can solve the problems of reduced yield, unclear standards, premature senescence of rice leaves, etc., to achieve increased rice yield, increased seed setting rate, and shortened growth period Effect
Active Publication Date: 2021-06-01
NORTHEAST AGRICULTURAL UNIVERSITY
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[0003] The present invention aims to solve the technical problems of the traditional boron and magnesium supplementation methods, whose standards are not clear, leading to premature aging of rice leaves and reduced yield, and provides an efficient boron and magnesium application method based on detecting the SPAD value of rice leaves.
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specific Embodiment approach 1
[0022] Specific implementation mode one: In this implementation mode, a method for efficiently applying boron and magnesium by an unmanned aerial vehicle based on detecting the SPAD value of rice leaves is specifically carried out in the following steps:
[0023] 1. Detect the SPAD value of the chlorophyll content of rice leaves during the rice breach stage;
[0024] When SPAD≤38, use drones to apply magnesium fertilizer and boron fertilizer, wherein magnesium fertilizer is a magnesium sulfate solution with a mass concentration of 11-12%, and boron fertilizer is a borax solution with a mass concentration of 1.8-2%;
[0025] When 38﹤SPAD≤40, use drones to apply magnesium fertilizer and boron fertilizer, wherein the magnesium fertilizer is a magnesium sulfate solution with a mass concentration of 9-10%, and the boron fertilizer is a borax solution with a mass concentration of 1.4-1.5%;
[0026] When 40﹤SPAD≤42, use drones to apply magnesium fertilizer and boron fertilizer, where...
specific Embodiment approach 2
[0034] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 1, when the drone is spraying fertilizer, the flying height is 4-5m, and the flow rate of the sprayed fertilizer is 600-800mL / mu. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0035] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 1, when the drone sprays fertilizer, the flying height is 4.5m, and the flow rate of the sprayed fertilizer is 650-750mL / mu. Others are the same as in the first embodiment.
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Abstract
A method for efficiently fertilizing boron and magnesium with an unmanned aerial vehicle based on detecting the SPAD value of rice leaves, and the invention relates to the field of rice fertilization. The invention aims to solve the technical problems that the traditional method of fertilizing boron and supplementing magnesium has unclear standards, leading to premature senescence of rice leaves and reduced yield. Methods: 1. Detect the SPAD value of chlorophyll content in rice leaves at the rice opening stage; apply magnesium and boron fertilizers by drone; Magnesium and boron fertilizers. The invention judges the growth of rice by detecting the chlorophyll content of rice leaves, applies boron and supplements magnesium, and avoids blind fertilization. UAVs are used to reasonably control the flying height and the flow rate of the sprayed fertilizer, saving more than 20% of the fertilizer and about 90% of the water. It overcomes the problem of blind application of medium and trace element fertilizers, greatly reduces the amount of fertilization and water consumption, and can also improve the yield and quality of rice, achieving the purpose of saving costs and increasing efficiency. The invention is used for rice fertilization.
Description
technical field [0001] The invention relates to the field of rice fertilization. Background technique [0002] Boron and magnesium are essential nutrients for plant growth and play a pivotal role in the growth and development of rice. Boron affects the fertilization process of plants and promotes the operation of carbohydrates; magnesium affects the content of chlorophyll and the distribution of photosynthetic products in plants, so these two elements also have an important impact on the formation of rice yield and quality. Excessive application of chemical fertilizers in production, especially nitrogen fertilizer, due to the antagonism between elements, a large amount of nitrogen and potassium application inhibits the absorption of boron and magnesium by rice. With the increase of rice yield, more and more boron and magnesium are absorbed and taken away by rice. At the same time, soil acidification and extensive irrigation cause a large amount of boron and magnesium in the...
Claims
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