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Method for water-saving topdressing of winter wheat in drought region by foliar fertilization replacing root fertilization

A winter wheat and regional technology, applied in the field of water-saving topdressing of winter wheat with leaves instead of roots, can solve the problems that plants cannot use nutrients in time, affect the activities of soil microorganisms, and destroy the ecological balance of farmland, so as to protect the balance of farmland ecological environment and benefit soil microorganisms activity, reducing the effect of soil water evaporation

Inactive Publication Date: 2013-10-23
杨贵成
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AI Technical Summary

Problems solved by technology

When the topdressing method of hole application encounters disasters such as autumn drought, winter drought, spring drought, and late spring cold, the fertilizer effect is slow, and the plants cannot use nutrients in time.
The topdressing method of hole application has compaction and acidification effects on the soil, increases the salinity of the soil, affects the activities of soil microorganisms, pollutes the groundwater, destroys the ecological balance of the farmland, and cannot solve the problem of premature aging in the late growth stage
[0006] The topdressing method of spreading fertilizer has the same disadvantages as the topdressing method of hole application, and it cannot be topdressed in drought

Method used

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  • Method for water-saving topdressing of winter wheat in drought region by foliar fertilization replacing root fertilization
  • Method for water-saving topdressing of winter wheat in drought region by foliar fertilization replacing root fertilization
  • Method for water-saving topdressing of winter wheat in drought region by foliar fertilization replacing root fertilization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: Feasibility test of water-saving topdressing method with leaves instead of roots

[0017] Autumn sowing in 2009, the feasibility test of replacing roots with leaves was arranged in the whole county. In this experiment, six treatments were set up, repeated three times, and arranged randomly:

[0018] (V 1 ) 15㎏ / 667㎡ of urea point topdressing method as green fertilizer;

[0019] (V 2 ) 15㎏ / 667㎡ of urea divided into 1, 2, 3, 4, 5, 6 leaves six times in spring and topdressing with leaves instead of roots, each time urea 2.5㎏ / 667㎡, made into 50㎏ / 667㎡ of urea solution;

[0020] (V 3 ) 7.5㎏ / 667㎡ of urea as top dressing with leaves instead of roots during the rejuvenation period;

[0021] (V 4 ) 7.5kg / 667㎡ of urea in spring 1, 2, 3, 4, 5, 6 as topdressing with leaves instead of roots, each time urea 1.25㎏ / 667㎡, made into 50㎏ / 667㎡ of urea solution;

[0022] (V 5 ) 7.5kg / 667㎡ of urea divided into greening, jointing and booting for three times as top dressing ...

Embodiment 2

[0031] Embodiment 2: Water-saving topdressing time and frequency test with leaves instead of roots

[0032] On the one hand, the feasibility test of autumn sowing in 2009 proved the feasibility of the method of substituting leaves for root water-saving topdressing; on the other hand, it also pointed out the way for us to explore the method of substituting leaves for roots; For the test, the test was set up with leaves instead of roots, and the time and frequency of fertilizer use, including:

[0033] (C 1 ) without topdressing as a control (C 1 K);

[0034] (C 2 ) Fertilize 7.5kg / 667㎡ of urea with leaves instead of roots in the second-leaf stage;

[0035] (C 3 ) In the second-leaf stage, topdress with leaves instead of roots with 5% urea solution 50kg / 667㎡;

[0036] (C 4 ) Fertilize with leaves instead of roots at each stage of turning green, jointing and booting, and use 50kg / 667㎡ of urea solution;

[0037] (C 5 ) Grasp the amount of fertilizer and the frequency of t...

Embodiment 3

[0043] Embodiment 3: Concentration test suitable for use of different devices with leaves instead of roots for water-saving topdressing

[0044] Through the test, it is harmless to wheat leaves with 5% concentration of urea solution; on this basis, further increase the concentration, reduce the water consumption, increase the amount of fertilizer, and design different concentration tests suitable for the use of leaves instead of roots. The seven treatments are as follows:

[0045] (B 1 ) 2% urea solution 50kg / 667㎡, sprayer operation;

[0046] (B 2 ) 5% urea solution 50㎏ / 667㎡, sprayer operation;

[0047] (B 3 ) 7.5% urea solution 50kg / 667㎡, sprayer operation;

[0048] (B 4 ) 7.5% urea solution 15㎏ / 667㎡, mist machine operation;

[0049] (B 5 ) 15% urea solution 15㎏ / 667㎡, mist machine operation;

[0050] (B 6 ) 20% urea solution 15㎏ / 667㎡, mist machine operation;

[0051] (B 7 ) Spray 50㎏ / 667㎡ of water as CK;

[0052] All the above tests were carried out at the second...

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Abstract

The invention discloses a method for water-saving topdressing of winter wheat in a drought region by foliar fertilization replacing root fertilization. The method is characterized in that in the whole winter wheat growth cycle, urea is applied according to a ratio of 30-37.5kg / 667m<2>, a use ratio of a base fertilizer is 80% and a use ratio of the fertilizer for foliar fertilization replacing root fertilization is 20%; and the method for topdressing by foliar fertilization replacing root fertilization comprises the following steps of applying the base fertilizer to a winter wheat field according to a ratio of 24-30.5kg / 667m<2> by one step in a period from October 2 to 7 every year, and carrying out urea topdressing by foliar fertilization replacing root fertilization according to a ratio of 6-7.5kg / 667m<2> respectively in green-turning, jointing and booting three stages, wherein in each process, urea is applied according to a ratio of 2-2.5kg / 667m<2>, a urea solution is used according to a ratio of 50kg / 667m<2>, and after four o'clock in the afternoon, the fertilizer solution is sprayed on leaf surfaces by a mist sprayer so that foliar fertilization replacing root fertilization is realized. The method for water-saving topdressing by foliar fertilization replacing root fertilization realizes normal topdressing of winter wheat in drought, saves water, labor and fertilizer, and realizes fertilizer direct absorption by leaves thereby improving a fertilizer utilization rate and a fertilizer action rate.

Description

technical field [0001] The invention relates to a wheat topdressing method, in particular to a method for substituting leaves for roots and water-saving topdressing for winter wheat in arid regions. Background technique [0002] Existing wheat topdressing adopts hole application topdressing method or sprinkling topdressing method. The premise of topdressing fertilizer method is that the soil should be moist, and the fertilizer must be dissolved, differentiated and adsorbed by the soil water before it can be absorbed by the root system of winter wheat; the law of topdressing fertilizer must be irrigated with water before or after the rain, and the winter wheat can absorb and utilize the fertilizer after it is dissolved. . [0003] Donghai County is located in the northeast of Jiangsu Province, between 118°22′ 30″~119° 11′ 15″ east longitude and 34° 17′ 30″~34° 47′ 30″ north latitude. It has a mid-latitude warm temperate semi-humid monsoon climate. The temperature is changea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C21/00
Inventor 杨贵成杨桂春王加龙杨杰张桂香杨韶熙
Owner 杨贵成
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