CN106856775A - A kind of screening technique of the corn fertilizing mode that replays - Google Patents
A kind of screening technique of the corn fertilizing mode that replays Download PDFInfo
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Abstract
The invention belongs to agricultural fertilizer technical field, a kind of screening technique of the corn fertilizing mode that replays is disclosed, method is：Distinguish the corn multiple growth phase Fertilizers of phase, jointing stage, typhon mouthful phase, tasseling stage prior to seeding, by counting the biological character analysis of Maize Leaf symptom, plant height, panicled characters, 100-grain weight, filter out localized fertilization mode.The continuous experiment for carrying out corn fertilizing mode for 3 years soon in representational field of the present invention, experiment sets three fertilization modes, the corn such as phase, jointing stage, typhon mouthful phase, tasseling stage multiple growth phase Fertilizers prior to seeding are distinguished, by counting corn biological character (leaf portion symptom, plant height, panicled characters, 100-grain weight etc.) localized optimal fertilization mode of Analysis and Screening；The present invention will be the fertilising based theoretical of science, and by demoncal ration, the localized property fertilization mode for progressively promoting science promotes the Sustainable high yield of corn.
Description
Technical field
The invention belongs to agricultural fertilizer technical field, more particularly to a kind of screening technique of the corn fertilizing mode that replays.
Background technology
Corn is cereal crops important in world wide, and more than 120 countries such as China, the U.S., Brazil are planted in extensively,
Accumulative germplasm area is close to 100,000,000 hectares.Used as important corn main production country, according to geographical position, planting area is divided for China
For corn is irrigated in northern Spring maize seeding area, Huanghuaihai Summer Maize Region, Mountain Area of Southwest Maize Region, southern hillses Maize Region, northwest
Area, Qinghai-Tibet Maize Region Deng Liuge areas.Shanxi is located in loess plateau, with southeast subordinate in the middle part of two corn-growing regions, north
In northern Spring maize seeding area, the middle and south belongs to Huanghuaihai Summer Maize Region.Corn is that Shanxi Province cultivated area is maximum, yield is most
Crops, latest data shows, Shanxi Province's corn yield in 2015 is 17,400,000,000 jin.In recent years, with aquaculture, the catering trade,
The scale of the industries such as brewing industry, industrialized development, corn demand are improved year by year, and the requirement to quality is also stepped up.It is beautiful
The excellent product of rice has become problem demanding prompt solution with high yield.
The stress factors such as soil depletion, arid, high temperature have become limitation Shanxi corn safety factor of production.From 2005
It is high to Maize in Shanxi Province growing area Investigation of Soil Nutrient analysis display Maize Growing Areas in Shanxi Province area nutrient content since year,
Need to be increase soil fertility by the measures of fertilizer of science, it is ensured that the high and stable yields of corn.Particularly replay corn, with section
The development of technology, corn planting is gradually developed from single administration nitrogenous fertilizer to nitrogen, phosphorus compounding application, Maize Production is had steadily
Development.
In sum, the problem of prior art presence is：Lack during existing fertilising to region, seasonality, corn
, there is Fertilization Level in the demand from corn growth to nutrient not good enough in the consideration of the aspects such as the stage of growth；On the one hand
Fertilising is to depend on chemical fertilizer unduly, and organic manure application rate is less；On the other hand it is the usage ratio pole of nitrogenous fertilizer, phosphate fertilizer, potash fertilizer
It is unreasonable, the consumption wretched insufficiency of phosphate fertilizer and potash fertilizer；Cause corn lodging rate and the stem rot incidence of disease is high and Yield and quality, city
Field competitiveness is not strong.
The content of the invention
For the problem that prior art is present, the invention provides a kind of screening technique of the corn fertilizing mode that replays.
The present invention is achieved in that a kind of screening technique of the corn fertilizing mode that replays, the replay corn fertilizing side
The screening technique of formula is：Phase, jointing stage, typhon mouthful phase, the corn multiple growth phase of tasseling stage coordinate prior to seeding respectively
Fertilising, by counting the biological character analysis of Maize Leaf symptom, plant height, panicled characters, 100-grain weight, filters out localized
Fertilization mode.
Further, it is described to apply 40Kg composite fertilizers, big loudspeaker in sowing time with filtering out preferably every mu of localized fertilization mode
Mouth phase and tasseling stage apply 20Kg, 10Kg urea respectively.
Further, the screening technique of the replay corn fertilizing mode is specially：
The selection in experimental plot：Experimental plot is chosen in corn planting region；
Soil fertility is determined：Experimental plot sets four treatment altogether, and each treatment sets three repetitions, and experimental plot is repeated every time in the spring
Broadcast soil sampling before fertilising season, determine alkali-hydrolyzable nitrogen, rapid available phosphorus, available potassium and organic matter；
The selection of soil application mode：Trial zone sets four treatment, and each treatment respectively carries out three kinds of fertilization modes；At each
Reason sets three repetition hillslope processes, hillslope processes random alignment, and each hillslope processes includes receiving producing region and sampling area；Receive producing region
Sign Board is plugged and sampling area between to distinguish, all sampling works are all completed in sampling area, receive producing region and only produced for harvesting survey；
Data statistics and analysis：In corn tri-leaf period, the consistent 30 plants of listing marks of plant of each treatment growth are chosen；From three
Leaf phase to the maturity period took a sample every 10 days, and choosing representational 3 plants~5 plants of plant from each cell is measured；By sample
Product plant is divided into blade, stem sheath, bract and seed, after killing once green grass or young crops at 105 DEG C, is dried to constant weight in 80 DEG C, claims sample plant to do
Weight, then calculates the accumulation of overground part population matter；In the corn kernel maturity period, each treatment cell whole strain number is counted, therefrom
It is random to take 30 fringes and carry out indoor species test, converted when by moisture content of kernels being 14%.
Result and analysis：There is notable difference to different plot soil nutrients to be analyzed；Fertilization mode is influenceed to replay
Corn biological character is analyzed；Fertilization mode influence replay corn resistance influence is analyzed；Filter out localization
Optimal fertilization mode.
Further, soil alkali-hydrolyzable nitrogen is determined using alkaline hydrolysis diffusion method；By extracting the anti-colorimetric method for determining Soil Available of molybdenum nickel
Phosphorus；By extracting flame spectrometry soil available nitrogen；By extracting flame spectrophotometric determination organic matter.
Further, the data statistics also includes with analysis：
Spike length, fringe are thick, fringe is heavy, bald sharp length, Ear weight, the statistics of 100-grain weight；Survey product area and take at 5 points by diagonal, often
Point 10m2, yield, fringe weight, Ear weight, 100-grain weight are defined by 18% moisture and convert its weight.
Further, the data statistics also includes with analysis：Full ripe stage, is often processed in the fringe of center row continuous sampling 10,3 times
Repeat；After fringe is air-dried, indoor species test is carried out；Survey that its spike length, bald sharp length, fringe be thick, grain length respectively；And look into tassel row number, row grain
Number, calculates grain number per spike；Each 3 parts of grab sample for the treatment of, determines mass of 1000 kernel and moisture content, and be scaled thousand under 14% moisture content
Weight；It is 20m that each cell is surveyed and produces area2, product result will be surveyed and be converted to the yield that moisture content is 14%；3 plants, 3 times of each treatment sampling
Repeat, biological yield and economic flow rate are determined after air-drying, calculate economic coefficient, economic coefficient=economic flow rate/biological yield.
Further, the data statistics also includes with analysis：Seeding corn before and after mid-June, late September carries out stem rot
Disease investigation and lodging situation, often process 30 plants, and disease index is recorded by leaf, then calculate disease index and the lodging of every treatment
Rate.
Advantages of the present invention and good effect are：
The continuous experiment for carrying out corn fertilizing mode for 3 years soon in representational field of the present invention, experiment sets three fertilising sides
Formula, distinguishes the corn such as phase, jointing stage, typhon mouthful phase, tasseling stage multiple growth phase Fertilizers prior to seeding, by statistics
Corn biological character (leaf portion symptom, plant height, panicled characters, 100-grain weight etc.) localized optimal fertilization mode of Analysis and Screening.
The present invention will be the fertilising based theoretical of science, and by demoncal ration, the localized property for progressively promoting science is applied
Fertile mode promotes the Sustainable high yield of corn.
The present invention is every mu to be applied in sowing time by the fertilization mode that the screening technique of the corn fertilizing mode that replays is screened
40Kg composite fertilizers (nitrogen:Phosphorus:Potassium=13:5:3), typhon mouthful phase and tasseling stage apply 20Kg, 10Kg urea respectively, are main Shanxi
The ideal fertilization mode of planting area.This fertilization mode can significantly increase production 5.9% and 4.5%, significantly reduce corn and fall
Volt rate and the stem rot incidence of disease.With China agricultural intensivization development, science of the present invention it is in good time because ground fertilising, improve jade
Rice Yield and quality, the market competitiveness.
Brief description of the drawings
Fig. 1 is the screening technique flow chart of replay corn fertilizing mode provided in an embodiment of the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
The screening technique of replay corn fertilizing mode provided in an embodiment of the present invention, the sieve of the replay corn fertilizing mode
Choosing method is：Distinguish the corn multiple growth phase Fertilizers of phase, jointing stage, typhon mouthful phase, tasseling stage prior to seeding, lead to
The biological character analysis of statistics Maize Leaf symptom, plant height, panicled characters, 100-grain weight is crossed, localized fertilising side is filtered out
Formula.
It is described to apply 40Kg composite fertilizers in sowing time with filtering out preferably every mu of localized fertilization mode, the typhon mouthful phase and
Tasseling stage applies 20Kg, 10Kg urea respectively.
Application principle of the invention is described in detail below in conjunction with the accompanying drawings.
As shown in figure 1, the screening technique of replay corn fertilizing mode provided in an embodiment of the present invention is specially：
S101:The selection in experimental plot：Experimental plot is chosen in corn planting region；
S102:Soil fertility is determined：Experimental plot sets four treatment altogether, and each treatment sets three repetitions, repeats to test every time
Soil sampling before fertilising is broadcast in field in spring, determines alkali-hydrolyzable nitrogen, rapid available phosphorus, available potassium and organic matter；
S103:The selection of soil application mode：Trial zone sets four treatment, and each treatment respectively carries out three kinds of fertilization modes；
Each treatment sets three repetition hillslope processes, hillslope processes random alignment, and each hillslope processes includes receiving producing region and sampling area；
Receive and plug Sign Board to distinguish between producing region and sampling area, all sampling works are all completed in sampling area, receive producing region only for harvesting
Survey to produce and use；
S104:Data statistics and analysis：In corn tri-leaf period, the consistent listed mark of 30 plants of plant of each treatment growth is chosen
Note；A sample was taken every 10 days from tri-leaf period to the maturity period, representational 3 plants~5 plants of plant is chosen from each cell and is surveyed
It is fixed；Sample plant is divided into blade, stem sheath, bract and seed, after killing once green grass or young crops at 105 DEG C, is dried to constant weight in 80 DEG C, claim sample
Plant weights, then calculate the accumulation of overground part population matter；In the corn kernel maturity period, each treatment cell whole strain is counted
Number, 30 fringes are therefrom taken at random carries out indoor species test, by moisture content of kernels be 14% when convert.
S105:Result and analysis：There is notable difference to different plot soil nutrients to be analyzed；Fertilization mode is influenceed
Replay corn biological character is analyzed；Fertilization mode influence replay corn resistance influence is analyzed；Filter out this
The optimal fertilization mode of soilization.
Application principle of the invention is further described with reference to specific embodiment.
1st, materials and methods
Experimental plot
2013-2014 experimental field carries out field test in continuous 2 years in the continuous village in Linfen Xiangfen County, and 2015 in Linfen
City Yaodu District Han Cun carries out checking test.Han Cun and continuous village are located in the Shanxi Province middle and south, are the important corn-growing regions in Shanxi Province
Domain, field experiment for many years shows that Han Cun and continuous village can represent the soil regime of Shanxi Province's Major Maize growing area.
Experiment Fruit variety Shanxi is single No. 63, and single No. 63 of Shanxi is the corn variety that Shanxi Province plants extensively, with strong adaptability,
The characteristics of planting range is extensive, is also corn variety that Han Cun and continuous village mainly plant.
2nd, soil fertility is determined
Experiment sets four treatment altogether, and each treatment sets 3 repetitions, repeats to be fetched earth before fertilising is broadcast in experimental plot in spring every time
Sample, determines alkali-hydrolyzable nitrogen, rapid available phosphorus, available potassium and organic matter.
Soil alkali-hydrolyzable nitrogen：Alkaline hydrolysis diffusion method；
Soil quick-effective phosphor：The extraction anti-colorimetric method of molybdenum nickel；
Soil available nitrogen：Extraction flame spectrometry；
Organic matter：Weight complex acid potassium oxidation Outside Heating Method.
3rd, soil application
The experiment sets four treatment, and each treatment fertilization mode is as shown in table 1.Each treatment set three repetitions test it is small
Area, hillslope processes random alignment, each hillslope processes include receiving producing region and sampling area.Receive and plug mark between producing region and sampling area
Board is known to distinguish, all sampling works are all completed in sampling area, receive producing region and only produced for harvesting survey.
4th, data statistics and analysis
In corn tri-leaf period, the consistent 30 plants of listing marks of plant of each treatment growth are chosen.It is every from tri-leaf period to the maturity period
A sample was taken every 10 days, choosing representational plant 3-5 plants from each cell is measured.Sample plant is divided into blade, stem
Sheath, bract and seed, after killing once green grass or young crops at 105 DEG C, dry to constant weight in 80 DEG C, claim its dry weight, then calculate overground part colony and do
Material is accumulated.
In the corn kernel maturity period, each treatment cell whole strain number is counted, 30 fringes are therefrom taken at random carries out indoor species test, presses
Converted when moisture content of kernels is 14%.
Spike length, fringe are thick, fringe is heavy, bald sharp length, Ear weight, 100-grain weight.Survey product area and take, every 10m at 5 points by diagonal2,
Yield, fringe weight, Ear weight, 100-grain weight are defined by 18% moisture and convert its weight.Above measures carry out long-term fixation not
Become, meteorological condition is only influence factor.
Full ripe stage, is often processed in the fringe of center row continuous sampling 10,3 repetitions.After fringe is air-dried, indoor species test is carried out.Respectively
Its spike length, bald sharp length, fringe thick (fringe mid diameter), grain length are surveyed, and looks into tassel row number, row grain number, calculate grain number per spike；Each treatment with
Machine samples 3 parts, determines mass of 1000 kernel and moisture content, and be scaled the mass of 1000 kernel under 14% moisture content.Each cell surveys product area
20m2, product result will be surveyed and be converted to the yield that moisture content is 14%.Each 3 plants for the treatment of sampling, 3 repetitions determine biological after air-drying
Yield and economic flow rate, calculate economic coefficient (economic coefficient=economic flow rate/biological yield).
Seeding corn before and after mid-June, late September carries out stem rot Disease investigation and lodging situation, often processes 30 plants, by
Leaf records disease index, then calculates the disease index and lodging rate of every treatment.
5th, result and analysis
1) there is notable difference in different plot soil nutrient
The elements such as nitrogen, phosphorus, potassium are the important nutrition of corn growth process, and growth, Yield and quality to corn etc. are all
Important.The height of the content of organic matter is the important symbol of soil fertility.The content of organic matter is high, then soil is more fertile
Fertile, permeability is good, and unit weight is relatively low, is adapted to corn growth；Conversely, it is then more barren, it is unfavorable for corn growth.Natural conditions, no
Had differences with the nitrogen in area, phosphorus, potassium and organic matter.The testing result of continuous 3 years shows, continue village and Han Cun farmlands nitrogen,
There is notable difference in phosphorus, potassium and the content of organic matter.
In terms of soil alkaline hydrolysis nitrogen content, Han Cun soil wants a little higher than continuous village.The height of soil alkaline hydrolysis nitrogen content is straight
Connect and reflect its size for supplying nitrogen ability.The factors such as farming activity, ecological factor, the land use time limit can all influence earth alkali-hydrolyzable nitrogen
Content.The content of continuous village's alkali-hydrolyzable nitrogen lies substantially in a relatively low level, and this is not probably due to excessive agricultural planting and not
What rational fertilising was caused.
The height of rapid available phosphorus directly reflects the Phosphorus supply capacity of soil in soil, and phosphorus is easily adsorbed solid in soil
It is fixed, it is difficult to be absorbed by crops.
The soil nutrient of Han Cun, will be less than continuous village in fertilising process dose apparently higher than continuous village.Conversely, continuous village's soil is supported
Show relatively low clearly, be especially detrimental to the growth of corn, it is noted that the amount and frequency of fertilising in corn planting and final-period management.
2) fertilization mode influence replay corn biological character
According to the measurement result of soil nutrient, experimental design three kinds of different fertilization modes, by inquiry corn life
Thing study biology proterties shows that three different fertilization modes are to replay corn yield (tassel row number, row grain number, seed-producing rate, bald point
The aspects such as rate, empty bar rate) aspect has significant difference, and (plant height, stem are thick, Ear height, fringe are thick, spike length) is without showing in terms of growing way
Write sex differernce.
Compared with fertilization mode 1 and 2, fertilization mode 3 can significantly improve the replay tassel row number of corn, row grain number, go out seed
Rate, significantly reduces bald sharp rate, so as to significantly improve corn yield.The corn typhon mouthful phase is maize reproductive growth and corn nourishment
In the period that growth is carried out simultaneously, it is also that corn growth process fertilizer requirement is maximum, needs fertile intensity highest period.In this period,
If nutrient is sufficient, corn growth is rapid, can significantly improve yield；Conversely, corn growth is obstructed, empty seed rate rises, and yield is bright
It is aobvious to decline.The selection of fertilization mode 2 and 3 is topdressed in the typhon mouthful phase, is the nutrient of the growth supplemented with abundance of corn, is significantly improved
The yield of corn.Tasseling stage is another fertilizer requirement larger period, particularly nitrogenous fertilizer during corn growth.At this
Phase, appropriate additional nitrogenous fertilizer can largely improve the setting percentage of corn, improve yield.Fertilization mode 3 is in this period
The additional nitrogenous fertilizer of selection, in time supplemented with the nutrient demand of maize reproductive growth, significantly improves yield.
3) fertilization mode influence replay corn resistance influence
Influence for analysis Different Fertilization mode to the corn resistance that replays, in replay corn growth stage, we determine
Replay corn lodging rate and the stem rot incidence of disease.Statistical result showed, employing mode 3 is applied fertilizer, and replay the corn stalk rot disease incidence of disease
It is 8.67%, lodging rate is 4.92%, substantially less than processes 1 and show that fertilization mode 3 can be significantly improved again with 2. results for the treatment of
Broadcast the resistance of corn.Lodging and stem rot are corn limiting factors important in process of production, have a strong impact on the product of corn
Amount.Corn lodging rate and the stem rot incidence of disease can be reduced by rational fertilising to a certain extent.Fertilization mode 3 is by good time
Repeatedly the mode of a small amount of fertilising, significantly reduces the corn lodging rate and the stem rot incidence of disease of test block replay corn, so as to carry
The yield of three corns for the treatment of high.
6th, discuss
There is geographic difference in soil fertility.Soil fertility is an important indicator for reflecting fertile soil, is to weigh
Soil plant growth can be provided needed for various nutrients ability.Because of the influence of the factors such as weather, biology, farming activities, soil
There is significant geographic difference in earth fertility.Shanxi Province arable land is main based on nonirrigated farmland, and basic fertility is poor, there are about 60% nonirrigated farmland
The content of organic matter less than 1%.This is limiting the yield and quality of Maize in Shanxi Province to a certain degree.Therefore rational people is passed through
Work is applied fertilizer, and can effectively improve soil fertility, it is ensured that the yield and quality of corn.But excessive fertilising not only aggravate peasant bear
Load, can also cause soil hardening, and the chemical fertilizer in farmland causes the environmental problems such as wawter bloom in being flushed to lake or pond by rainwater.Because of ground
The fertilising of suiting measures to different conditions timely and appropriate discovery could i.e. meet crop growth result in environmental problem again.This experiment has generation by selection
The plot detection of table confirms that Han Cun and continuous village arable land have obvious difference at aspects such as organic matter, nitrogen, phosphorus, potassium.Therefore exist
In actual production process, the arable land of Han Cun and continuous village hair will apply fertilizer because of ground.Han Cun arable soils are more fertile, in planting process
Dose and fertilizer application frequency can suitably be reduced.Conversely, the arable soil in continuous village is more barren, to properly increase dose and apply
Fertile number of times.By way of this fertilising because of ground, the waste of resource can be reduced, improve the utilization rate of the means of production, Jin Erti
The yield and the market competitiveness of corn high.
Corn different growing stage fertilizer requirement is variant.The corn whole history of life include sowing time, tri-leaf period, the jointing stage,
The links such as typhon mouthful phase, tasseling stage, maturity period.Different growth periods, corn exists obvious to the demand of soil nutrient
Difference.In sowing time, corn is mainly based on nutrient growth, and root system development is very fast, and cauline leaf growth is more slow.This period root
The development degree of system determines later stage corn yield and quality, therefore this process will apply the base fertilizer of abundance, it is ensured that corn is being broadcast
The phase of kind, tri-leaf period, the fertilizer amount of jointing stage production process.When typhon mouthful phase and tasseling stage are corn growths the most vigorous
Phase, the amount of continuing to pay dues is big, needs fertile intensity high, the need for base fertilizer can not meet this period corn growth.In this period, in good time
Topdressing to play a multiplier effect.Fertilization mode 3 repeatedly applies fertilizer by stages according to the growth period of corn, although fertilising is total
Amount is identical with mode 1 and 2, and effect of increasing production is obvious.Further, since split application, fertilization mode 3 avoids single excessively fertilising from causing
Burn seedlings, weak seedling phenomenon, play a part of strong sprout, improve the anti-adversity ability of corn.
In good time because ground fertilising can effectively improve yield.Fertilising can effectively solve limitation of the soil depletion to increasing production.But it is blind
Purpose fertilising can not only improve yield, can also cause the phenomenons such as burn seedlings, weak seedling, and soil hardening, wawter bloom etc. can be caused when serious
Environmental problem.Therefore utilization rate of fertilizer is farthest improved because of ground fertilising in good time, reduces input, improve the city of corn
Field competitiveness, in particular with the intensivization development of China's agricultural, the in good time of science is to improve corn yield, matter because ground applies fertilizer
Amount, the market competitiveness.
Here is Different Fertilization mode table.
The fertilization mode of table 1 and experiment process
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (7)
1. it is a kind of replay corn fertilizing mode screening technique, it is characterised in that the screening side of the replay corn fertilizing mode
Method is：The corn multiple growth phase Fertilizers of phase, jointing stage, typhon mouthful phase, tasseling stage prior to seeding are distinguished, by system
Meter Maize Leaf symptom, plant height, panicled characters, the biological character analysis of 100-grain weight, filter out localized fertilization mode.
2. the screening technique of the corn fertilizing mode that replays as claimed in claim 1, it is characterised in that described to filter out localization
Preferably every mu ground of fertilization mode apply 40Kg composite fertilizers in sowing time, typhon mouthful phase and tasseling stage apply 20Kg, 10Kg urine respectively
Element.
3. the screening technique of the corn fertilizing mode that replays as claimed in claim 1, it is characterised in that the replay corn fertilizing
The screening technique of mode is specially：
The selection in experimental plot：Experimental plot is chosen in corn planting region；
Soil fertility is determined：Experimental plot sets four treatment altogether, and each treatment sets three repetitions, experimental plot is repeated every time and is broadcast in spring
Soil sampling before fertilising, determines alkali-hydrolyzable nitrogen, rapid available phosphorus, available potassium and organic matter；
The selection of soil application mode：Trial zone sets four treatment, and each treatment respectively carries out three kinds of fertilization modes；Each treatment sets
Three repetition hillslope processes, hillslope processes random alignment, each hillslope processes include receiving producing region and sampling area；Receive producing region and take
Sign Board is plugged between sample area to distinguish, all sampling works are all completed in sampling area, receive producing region and only produced for harvesting survey；
Data statistics and analysis：In corn tri-leaf period, the consistent 30 plants of listing marks of plant of each treatment growth are chosen；From tri-leaf period
A sample was taken every 10 days to the maturity period, choosing representational 3 plants~5 plants of plant from each cell is measured；Sample is planted
Strain is divided into blade, stem sheath, bract and seed, after killing once green grass or young crops at 105 DEG C, is dried to constant weight in 80 DEG C, claims sample plant weights, so
The accumulation of overground part population matter is calculated afterwards；In the corn kernel maturity period, each treatment cell whole strain number is counted, therefrom taken at random
30 fringes carry out indoor species test, by moisture content of kernels be 14% when convert.
Result and analysis：There is notable difference to different plot soil nutrients to be analyzed；On fertilization mode influence replay corn
Biological character is analyzed；Fertilization mode influence replay corn resistance influence is analyzed；Filter out it is localized most
Good fertilization mode.
4. the screening technique of the corn fertilizing mode that replays as claimed in claim 3, it is characterised in that surveyed using alkaline hydrolysis diffusion method
Determine soil alkali-hydrolyzable nitrogen；By extracting the anti-colorimetric method for determining soil quick-effective phosphor of molybdenum nickel；By extracting flame spectrometry soil available nitrogen；
By extracting flame spectrophotometric determination organic matter.
5. the screening technique of replay corn fertilizing mode as claimed in claim 3, it is characterised in that the data statistics with point
Analysis also includes：
Spike length, fringe are thick, fringe is heavy, bald sharp length, Ear weight, the statistics of 100-grain weight；Survey product area and take, every point at 5 points by diagonal
10m2, yield, fringe weight, Ear weight, 100-grain weight are defined by 18% moisture and convert its weight.
6. the screening technique of replay corn fertilizing mode as claimed in claim 3, it is characterised in that the data statistics with point
Analysis also includes：
Full ripe stage, is often processed in the fringe of center row continuous sampling 10,3 repetitions；After fringe is air-dried, indoor species test is carried out；Survey it respectively
Spike length, bald sharp length, fringe are thick, grain length；And tassel row number, row grain number are looked into, calculate grain number per spike；Each 3 parts of grab sample for the treatment of, determines thousand
Grain weight and moisture content, and it is scaled the mass of 1000 kernel under 14% moisture content；It is 20m that each cell is surveyed and produces area2, will survey and produce result conversion
Into the yield that moisture content is 14%；Each 3 plants for the treatment of sampling, 3 repetitions determine biological yield and economic flow rate after air-drying, and calculate
Economic coefficient, economic coefficient=economic flow rate/biological yield.
7. the screening technique of replay corn fertilizing mode as claimed in claim 3, it is characterised in that the data statistics with point
Analysis also includes：Seeding corn before and after mid-June, late September carries out stem rot Disease investigation and lodging situation, often processes 30 plants,
Disease index is recorded by leaf, the disease index and lodging rate of every treatment is then calculated.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109122155A (en) * | 2018-08-27 | 2019-01-04 | 广东省农业科学院农业资源与环境研究所 | A kind of measuring method that Different Fertilization mode influences Chinese yam growing state |
| CN109588234A (en) * | 2019-01-30 | 2019-04-09 | 湖南农业大学 | A kind of Lake Dongting area summer corn density subtracts nitrogen high-yield high-efficiency cultivation regulation method |
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| CN109588234A (en) * | 2019-01-30 | 2019-04-09 | 湖南农业大学 | A kind of Lake Dongting area summer corn density subtracts nitrogen high-yield high-efficiency cultivation regulation method |
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