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High-efficiency boron and magnesium application method based on detecting SPAD value of rice leaves

A drone and rice technology, applied in fertilization methods, rice cultivation, fertilization devices, etc., can solve problems such as unclear standards, reduced yield, premature senescence of rice leaves, etc., to increase seed setting rate, increase rice yield rate, and shorten the growth period Effect

Active Publication Date: 2019-11-19
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[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.

Method used

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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

The invention provides a high-efficiency boron and magnesium application method based on detecting SPAD value of rice leaves, and relates to the technical field of fertilizer application of rice.The invention aims to solve the technical problems of a traditional boron application and magnesium supplementation method that the technical standards are unknown, leading to premature senescence of riceleaves and reduced yield.The method includes the steps of first, during the rupturing stage of rice, the SPAD value of chlorophyll content in rice leaves is detected, and applying magnesium fertilizers and boron fertilizers by using UAV; second, during the full heading stage of rice, the SPAD value of chlorophyll content in rice leaves is tested, and applying magnesium fertilizers and boron fertilizers by using UAV.The method of the invention judges the growth status of rice by detecting the chlorophyll content of rice leaves, and applying boron and supplement magnesium to avoid blind fertilization.By using the UAV and rationally controlling the flying height and the flow of the fertilizer sprayed, 20% or above of fertilizer and about 90% of water are saved.The problem of blindly applyingmedium and trace element fertilizers is overcome, the amount of fertilization and water consumption are greatly reduced, and the yield and quality of rice are increased, thereby achieving the purposeof cost saving and efficiency increasing.The method of the invention is applicable to 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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C21/00A01G22/22
CPCA01C21/007A01G22/22
Inventor 彭显龙刘智蕾于彩莲罗翔宇李鹏飞
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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