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Fertilization technology for reducing application amount of crops potash fertilizer

A crop and application rate technology, applied in fertilization devices, fertilization methods, applications, etc., can solve the problems of undiscovered and reduced potassium fertilizer application, and achieve the effects of reducing release inhibition, reducing maintenance time, and reducing the risk of loss

Inactive Publication Date: 2014-11-19
何文
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Problems solved by technology

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  • Fertilization technology for reducing application amount of crops potash fertilizer
  • Fertilization technology for reducing application amount of crops potash fertilizer

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Embodiment Construction

[0020] From 2006 to 2013, through the analysis of 78,840 soil samples, the average value of soil available potassium was 116.44mg / kg. Compared with 1982, 30 years ago, the soil available potassium decreased slightly, but the change range was very small. Before 2008, the amount of potassium fertilizer applied to major crops was small. After more than 30 years of large-scale absorption, the average value dropped from 117.8mg / kg in 1982 to the current 116.4mg / kg, and the absolute value dropped only 1.36mg / kg. , The decline rate is only 1.15%. The comparison of changes in soil available potassium in 30 years is shown in Table 1

[0021] Table 1 Comparison of changes in soil available potassium in 30 years

[0022]

[0023] Potassium content in the soil is generally 1% to 3%, including three types of potassium, such as quick-acting potassium (water-soluble potassium, exchangeable potassium), slow-acting potassium or late-acting potassium (secondary minerals), and ineffective po...

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Abstract

The invention belongs to the agriculture fertilization field, and concretely relates to a fertilization technology for reducing application amount of a crops potash fertilizer. The technology is characterized in that a research conclusion that rapidly available potassium in soil is abundant and can satisfy the normal growth requirement of crops is used, During a seedling stage, fertilization is not carried out, soil potassium is used, soil rapidly available potassium is increased through fertilization during a largest requirement period of a fertilizer, release inhibiting of exogenous potassium to soil potassium is reduced, and potash fertilizer application amount can be reduced. In the seedling stage after sowing, planting and 1-2 months after planting crops, and seedling can only absorb the rapidly available potassium in a nature state in soil. After 10 days of initial stage of a bud differentiation phase (young ear differentiation phase), 30-120 kilograms of potash fertilizer (K2O) is applied in each hectare, concentration of rapidly available potassium in soil can be increased by 10-40% (average increasing is about 25%), so that supply of rapidly available potassium to crops in the largest requirement period of the fertilizer at 2-3 months of bud differentiation stage, booting stage and maturity stage can be ensured. Compared with a traditional method, the amount of potash fertilizer is reduced by 10-20%.

Description

technical field [0001] The invention belongs to the field of agricultural fertilization, and the patent code is A01C. It specifically relates to a technology for reducing the application amount of potassium fertilizer in the process of applying potassium fertilizer to crops. Background technique [0002] Potassium is one of the three elements of crop growth, and plays an important role in the physiological processes of crop growth, development, and metabolism. Potassium can promote photosynthesis and significantly improve the absorption and utilization of nitrogen by crops. Potassium also promotes economical crop water use, accumulates potassium ions in crop cells, increases cell osmotic pressure and moves water from low-concentration soil solutions to high-concentration root cells. The important physiological function of potassium is to enhance the regulation of cells to environmental conditions. When the supply of potassium is sufficient, crops can effectively use water ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C21/00
Inventor 何文
Owner 何文
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