CN103814779A - Comprehensive prevention and control technology of corn waterlogging disaster - Google Patents
Comprehensive prevention and control technology of corn waterlogging disaster Download PDFInfo
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Abstract
The invention discloses a comprehensive prevention and control technology of a corn waterlogging disaster, wherein soil ridging or compartment ridging regulation and control are utilized. The comprehensive prevention and control technology comprises the following steps: sowing in a wide and narrow row spacing manner during corn sowing, carrying out intertillage ridging or ditching during the five-leaf stage of corn, ditching in wide rows of corn and ridging in narrow rods of corn, or ditching in wide rows on the two sides of a compartment consisting of four or six rows, additionally applying nitrogen-oxygen mixed fertilizer instantly after the corn waterlogging disaster occurs, and spraying spermidine chemical modifier on leaf surfaces at the same time, wherein spraying is carried out once in the morning and night for 2-3 days continuously; other steps are the same as that during normal management, corn is harvested until bracts of corn clusters are dried up, corn grain milk lines disappear, and a black layer appears, namely when grains are completely and physiologically matured. According to the comprehensive prevention and control technology, through comprehensive precontrol advantages of prevention in advance and remedy after the disaster, the root oxygen deficiency after waterlogging can be effectively reduced and retarded, accumulated toxic effect of hazardous substances of soil is reduced, and the root growth and absorption capacity is strengthened, so that the symplastic growth of overground part and root system is promoted, and the yield is improved.
Description
Technical field
The present invention relates to a kind of agronomy and change control organically combine the Comprehensive Preventing control administrative skill of controlling the harm of corn waterlogging, belong to agronomy field.
Background technology
Along with Global climate change, waterlogging, become second largest disaster in China's Natural Disasters of Agricultural, accounts for 24.2% left and right, and waterlogging harm to cause crop yield loss be global problem.According to statistics, the arable land in the whole world approximately 10% suffers wet damage caused by waterlogging evil, causes crop failure 20%, and approximately 50% irrigated land is subject to the impact of impeded drainage.Due to regionality, sudden and unpredictability that waterlogging disaster occurs, the hazard ratio arid of waterlogging is larger to the threat of agricultural production.Since the nineties in 20th century, the trend that flood scope expands year by year, occurrence frequency improves constantly, according to statistics, China in 1998 has 28 provincial districts and suffers flood, and crops disaster area reaches 2,544 ten thousand hm
2, Disaster Area reaches 1,599 ten thousand hm
2, 2,642 hundred million yuan of direct economic losses.2003 there is again great flood in Basin of Huaihe River, according to Jiangsu, Anhui, disaster-stricken crops more than 520 ten thousand hm of Henan San Sheng
2, total crop failure 1,200,000 hm
2.Corn is the first cereal crops of China, its production and China's grain security and social sustainable development close relation.But in the last few years in China main maize area because the distribution inequality of rainfall is produced to crops and output has caused and has a strong impact on, especially at the Huang-Huai-Hai plain of China and the loose river Liaohe River Basin in northeast, the concentrated rainfall in 7-9 month forms to have caused to the growth of corn and output and has a strong impact on, gently cause corn underproduction amplitude 15-30%, the serious time can be up to more than 40%, even subregion total crop failure, harmful having become of waterlogging has a strong impact on one of corn stable yields and yielding ability key factor.
The originally injury of corn damage or crop failure caused by waterlogging is excess moisture, next is to cause a series of secondary disasters of coercing, coerce with the poisonous and hazardous ion of soil and coerce etc. as anoxic, cause soil solid, liquid, the imbalance of gas three-phase, poisonous and harmful substance accumulation, cause root system anaerobic environment, aerobic respiration difficulty, moisture and absorption of nutrient ingredients are obstructed, therefore the waterlogging kind of selection and popularization is to alleviate at present one of important measure of waterlogging disaster, but because of Different Crop kind, growthdevelopmental stage, soil types and time and different, if the 4 leaf phases of corn are sensitive periodss of waterlogging, soil moisture exceedes 90% when above before corn 7 leaves, corn is with regard to depauperation, during corn seedling, continue just to there will be above for 3 days damage or crop failure caused by waterlogging symptom, in Huang-Huai-Hai corn producing region, very easily there is bud waterlogging phenomenon in the time early in rainy season in Summer Maize.Waterflooding 1d is very micro-to Yield of Corn, and the above underproduction rate of waterflooding 3d is more than 40%, shooting stage waterflooding 5-7d, and tasseling stage waterflooding 7d summer corn has no harvest substantially.After corn waterflooding 15d, a large amount of adventive root of hyperplasia, root district cytoclasis becomes aerenchyma, have a strong impact on the growth of root, organelle-vacuole in blade and chloroplast membranes structural deterioration, finally cause blade cell death and affect dry-matter accumulation, and corn is different to the sensitivity of waterflooding with the flower grain phase in seedling stage, fringe phase, wherein seedling stage is the most responsive, the output range of decrease can arrive 19-27%, is secondly the fringe phase, and the range of decrease is 14.1-19.1%, the flower grain phase is reduced amplitude minimum, and the range of decrease is 9.5-11.6%.A large number of experiments show that, flood occurs early heavy on the impact of corn ultimate output, and after flood, field ponding is discharged more early, and corn underproduction amplitude is less.Although select to a certain degree mitigation of kind, but often can not prevent in advance or in generation effective disaster mitigation degree afterwards, although research showed Increasing N fertilizer in the past, can alleviate damage or crop failure caused by waterlogging in seedling stage, obviously improve growth, but can only after calamity, intervene and remission effect very limited, therefore how can take measures in advance prevention and alleviate damage or crop failure caused by waterlogging, and how to take the complex art such as soil and chemical regulation to resist and control of maize waterlogging disaster, alleviate the production loss most important key that seems, but this series of problems still lacks system research.Therefore further carry out the comprehensive research that agronomy and chemical regulation combine, become waterlogging disaster problem demanding prompt solution in China's Maize Production.Since 2009, we start the Ecological and Physiological Effect research of the resistance to waterlogging of corn, find to be regulated to core with soil, the corn yield that can effectively prevent and alleviate waterlogging disaster to cause in conjunction with agronomy and chemical regulation measure declines to a great extent, this is not only conducive to Ensuring Food Safety and produces, and being conducive to agriculture sustainable development, this is significant to ensureing national grain security and social development undoubtedly.
Summary of the invention
Technical problem to be solved by this invention is for Yi Lao district this production practical problem of corn waterlogging disaster, provide a kind of corn waterlogging harm of controlling take soil and chemical regulation as the quantification Comprehensive Control Technology of core, to realize the stable high yield of corn and to reduce damage by disease and insect incidence and production loss.
For solving the problems of the technologies described above, the present invention by the following technical solutions: the anti-control techniques of corn waterlogging disaster of the present invention, comprises following content:
The Comprehensive Preventing control techniques of corn waterlogging disaster of the present invention, comprises the following steps:
(1) soil ridging or the regulation and control of ridge, railway carriage or compartment: wide-and narrow-row sowing in the time of corn seeding, wide line space 70 ~ 80cm, narrow row spacing 40 ~ 50cm, the 5 leaf phases of corn are carried out cultivation and banking ridging or trench digging, in the loose row of corn, ditch, at corn narrow row ridging ridging, the high 15 ~ 20cm in ridge, apart from 25 ~ 30cm at the bottom of furrow, row spacing 50 ~ 60cm; Or every 4 row or 6 behavior one railway carriage or compartments, trench digging in the wide row in both sides, railway carriage or compartment, ditch depth 20 ~ 25cm, wide 30 ~ 35cm;
(2) quantitative chemical regulation and control and agronomic measures: after corn damage or crop failure caused by waterlogging occurs, enrich immediately nitrogen oxygen mixed fertilizers, take purity nitrogen fertilizer as standard, fertilizing amount is 3 ~ 6 kgs/acre, carry out foliage-spray spermidine chemical regulator simultaneously, concentration is 0.5 ~ 1mmol/L, in each spray sooner or later 1 time, sprays continuously 2 ~ 3 days;
(3) harvest in proper late: treat that corn ear all occurs that bract is withered, seed milk-line disappears, and gathering in the crops while being the complete physiological ripening of seed appears in black layer.
In described step (2), nitrogen oxygen mixed fertilizers is the mixed fertilizers that the fertile weight ratio of instant nitrogenousfertilizer and oxygenation is 2:1.
Described oxygenation is fertile is the fertilizer containing available nitrogen 30% and active oxygen 16.5%.
Beneficial effect of the present invention: the present invention adopts the soil control methods on ridging or ridge, railway carriage or compartment, can eliminate in advance or reduce waterlogging disaster, because soil ridge culture or ridge, railway carriage or compartment avoiding or alleviate after waterlogging root system in the immersion of water layer, make unnecessary moisture discharge or to be stored in furrow along furrow, increase the gas content of corn root, eliminated or reduce waterlogging the secondary anoxic of root system generation is injured.Owing to having reduced immersion and the soak time of moisture to rhizosphere soil, also having alleviated reducing substances in soil increases, and has reduced its toxic action that crop root is caused simultaneously.Ridging and ridge, railway carriage or compartment have increased maize root system active soil stratum thickness in addition, make more than the thickness of plough horizon has been increased to 35cm, and soil fertility increases greatly, expand root absorbing area, increase root dry weight and improving activity of root system, strengthened the resistance of crop, effectively delayed later stage Senescence of Root System.
The remedial measure that the present invention adopts quantitative chemical regulation and control and agronomy to combine after damage or crop failure caused by waterlogging occurs can effectively alleviate waterlogging harm, first be that oxygenation fertilizer can discharge and increase oxygen in soil content, alleviate the anoxia phenomenon after waterlogging, thereby reduce the injury that anaerobic respiration causes; Next is by enriching nitrogenous fertilizer and foliage-spray spermidine, loss and the shortage of the root growth layer available nutrient can effective compensation waterlogging causing after injury, regulation and control Corn internal hormone metabolic balance, slow down the quick senescence process of maize leaf, the photosynthetic capacity that significantly strengthens overground part leaf colour and blade, slows down Senescence of Root System, strengthens root growth and absorbing capacity, thereby promote overground part and root system symplastic growth, improve output.The present invention with its prevent in advance with calamity after the comprehensive pre-control advantage remedied can effectively reduce and slow down waterlogging back root part anoxic, reduce the toxic effect of soil harmful substance accumulation, strengthen root growth layer soil fertility and coordination and improve the superiority such as maize root system and overground part grow, in addition there is stronger operability, after the summer corn district of easily waterlogging is implemented and applies, its outstanding advantage be will bring into play, significant ecology, economic and social benefit obtained.
Accompanying drawing explanation
Fig. 1 is the impact of corn silking phase different measure on Estimating Leaf Area In Maize under flooding stress in embodiment 6.
Fig. 2 is the impact of corn silking phase different measure on flooding stress inferior lobe colour in embodiment 6.
Fig. 3 is the impact of corn silking phase different measure on corn dry matter under flooding stress in embodiment 6.
Fig. 4 is the impact of corn silking phase different measure on corn yield under flooding stress in embodiment 6.
Fig. 5 is the impact of corn shooting stage different measure on Estimating Leaf Area In Maize under flooding stress in embodiment 7.
Fig. 6 is the impact of corn shooting stage different measure on maize leaves colour under flooding stress in embodiment 7.
Fig. 7 is the impact of corn shooting stage different measure on Corn Biomass Yield under flooding stress in embodiment 7.
Fig. 8 is the impact of corn shooting stage different measure on corn economic flow rate under flooding stress in embodiment 7.
Embodiment
Embodiment 1
The anti-control techniques of the corn waterlogging disaster of the present embodiment, step is as follows:
(1) soil ridging or the regulation and control of ridge, railway carriage or compartment: wide-and narrow-row sowing in the time of corn seeding, wide line space 70 ~ 80cm, narrow row spacing 40 ~ 50cm, the 5 leaf phases of corn are carried out cultivation and banking ridging or trench digging, in the loose row of corn, ditch, at the corn narrow row large ridge of duplicate rows of having earthed up, the high 15 ~ 20cm in ridge, apart from 25 ~ 30cm at the bottom of furrow, row spacing 50 ~ 60cm; Or every 4 row or 6 behavior one railway carriage or compartments, trench digging in the wide row in both sides, railway carriage or compartment, ditch depth 20 ~ 25cm, wide 30 ~ 35cm;
(2) quantitative chemical regulation and control and agronomic measures: after corn damage or crop failure caused by waterlogging occurs, enrich immediately nitrogen oxygen mixed fertilizers, nitrogen oxygen mixed fertilizers is the mixed fertilizers that the fertile mass ratio of instant nitrogenousfertilizer and oxygenation is 2:1, oxygenation is fertile is the fertilizer containing available nitrogen 30% and active oxygen 16.5%, and take purity nitrogen fertilizer as standard, fertilizing amount is 3 ~ 6 kgs/acre, carry out foliage-spray spermidine chemical regulator simultaneously, concentration is 0.5 ~ 1mmol/L, in each spray sooner or later 1 time, sprays continuously 2 ~ 3 days;
(3) harvest in proper late: treat that corn ear all occurs that bract is withered, seed milk-line disappears, and gathering in the crops while being the complete physiological ripening of seed appears in black layer.
The anti-control techniques of the corn waterlogging disaster of the present embodiment, step is as follows:
(1) soil ridging: wide-and narrow-row sowing in the time of corn seeding, wide line space 70cm, narrow row spacing 40cm, the 5 leaf phases of corn are carried out cultivation and banking ridging or trench digging, ditch, on the corn narrow row large ridge of duplicate rows of having earthed up in the loose row of corn, high 15 cm in ridge, 25cm at the bottom of the rise furrow of ridge, row spacing 50cm;
(2) quantitative chemical regulation and control and agronomic measures: after corn damage or crop failure caused by waterlogging occurs, enrich immediately nitrogen oxygen mixed fertilizers, nitrogen oxygen mixed fertilizers is the mixed fertilizers that the fertile mass ratio of instant nitrogenousfertilizer and oxygenation is 2:1, wherein 4 kgs/acre of instant nitrogenousfertilizers, fertile 2 kgs/acre of oxygenation, wherein oxygenation is fertile is the fertilizer containing available nitrogen 30% and active oxygen 16.5%, carry out foliage-spray spermidine chemical regulator simultaneously, concentration is 0.5mmol/L, in each spray sooner or later 1 time, sprays continuously 3 days;
(3) harvest in proper late: treat that corn ear all occurs that bract is withered, seed milk-line disappears, and gathering in the crops while being the complete physiological ripening of seed appears in black layer.
The anti-control techniques of the corn waterlogging disaster of the present embodiment, step is as follows:
(1) soil ridging: wide-and narrow-row sowing in the time of corn seeding, wide line space 80cm, narrow row spacing 50cm, the 5 leaf phases of corn are carried out cultivation and banking ridging or trench digging, ditch, on the corn narrow row large ridge of duplicate rows of having earthed up in the loose row of corn, high 20 cm in ridge, 30cm at the bottom of the rise furrow of ridge, row spacing 60cm;
(2) quantitative chemical regulation and control and agronomic measures: after corn damage or crop failure caused by waterlogging occurs, enrich immediately nitrogen oxygen mixed fertilizers, nitrogen oxygen mixed fertilizers is the mixed fertilizers that the fertile mass ratio of instant nitrogenousfertilizer and oxygenation is 2:1, wherein 3 kgs/acre of instant nitrogenousfertilizers, fertile 1.5 kgs/acre of oxygenation, wherein oxygenation is fertile is the fertilizer containing available nitrogen 30% and active oxygen 16.5%, carry out foliage-spray spermidine chemical regulator simultaneously, concentration is 1mmol/L, in each spray sooner or later 1 time, sprays continuously 2 days;
(3) harvest in proper late: treat that corn ear all occurs that bract is withered, seed milk-line disappears, and gathering in the crops while being the complete physiological ripening of seed appears in black layer.
The anti-control techniques of the corn waterlogging disaster of the present embodiment, step is as follows:
(1) ridge, soil railway carriage or compartment regulation and control: wide-and narrow-row sowing in the time of corn seeding, wide line space 75cm, narrow row spacing 45cm, the 5 leaf phases of corn are carried out the regulation and control of ridge, railway carriage or compartment, every 4 behavior one railway carriage or compartments, trench digging in the wide row in both sides, railway carriage or compartment, ditch depth 20cm, wide 30cm;
(2) quantitative chemical regulation and control and agronomic measures: after corn damage or crop failure caused by waterlogging occurs, enrich immediately nitrogen oxygen mixed fertilizers, nitrogen oxygen mixed fertilizers is the mixed fertilizers that the fertile mass ratio of instant nitrogenousfertilizer and oxygenation is 2:1, wherein 5 kgs/acre of instant nitrogenousfertilizers, fertile 2.5 kgs/acre of oxygenation, wherein oxygenation is fertile is the fertilizer containing available nitrogen 30% and active oxygen 16.5%, carry out foliage-spray spermidine chemical regulator simultaneously, concentration is 0.8mmol/L, in each spray sooner or later 1 time, sprays continuously 3 days;
(3) harvest in proper late: treat that corn ear all occurs that bract is withered, seed milk-line disappears, and gathering in the crops while being the complete physiological ripening of seed appears in black layer.
Embodiment 5
The anti-control techniques of the corn waterlogging disaster of the present embodiment, step is as follows:
(1) ridge, soil railway carriage or compartment regulation and control: wide-and narrow-row sowing in the time of corn seeding, wide line space 75cm, narrow row spacing 45cm, the 5 leaf phases of corn are carried out the regulation and control of ridge, railway carriage or compartment, every 6 behavior one railway carriage or compartments, trench digging in the wide row in both sides, railway carriage or compartment, ditch depth 25cm, wide 35cm;
(2) quantitative chemical regulation and control and agronomic measures: after corn damage or crop failure caused by waterlogging occurs, enrich immediately nitrogen oxygen mixed fertilizers, nitrogen oxygen mixed fertilizers is the mixed fertilizers that the fertile mass ratio of instant nitrogenousfertilizer and oxygenation is 2:1, wherein 4 kgs/acre of instant nitrogenousfertilizers, fertile 2 kgs/acre of oxygenation, wherein oxygenation is fertile is the fertilizer containing available nitrogen 30% and active oxygen 16.5%, carry out foliage-spray spermidine chemical regulator simultaneously, concentration is 1mmol/L, in each spray sooner or later 1 time, sprays continuously 2 days;
(3) harvest in proper late: treat that corn ear all occurs that bract is withered, seed milk-line disappears, and gathering in the crops while being the complete physiological ripening of seed appears in black layer.
Embodiment 6
Adopt method of the present invention to carry out the small plot experiment of continuous 2 years (2011 and 2012) in certain proving ground, adopt Artificial flooding test, carry out submerging treatment in the corn silking phase, 7 processing are set: (1) contrast CK1: not waterflooding; (2) CK2: waterflooding; (3) T1: ridge culture+waterflooding; (4) T2: waterflooding+enrich oxygen fertilizer+spray polyamines (carbamide peroxide mix to join with urea 1:2 execute); (5) T3: waterflooding+enrich nitrogenous fertilizer; (6) T4: waterflooding+the present invention; (7) T5: railway carriage or compartment ridge+waterflooding.Above-mentioned processing having been carried out to the beneficial effects such as leaf area, chlorophyll and output and constituent element investigates and analyses.The results are shown in Figure 1 and Fig. 2, take ridge, railway carriage or compartment or ridge culture, enrich nitrogenous fertilizer, spray polyamines and the present invention and all can promote cauline leaf growth, increase later stage greenery area index, wherein the present invention increases by 21.8% and 33.9% with the maturing stage than waterflooding contrast is average in 30 days after weaving silk, chlorophyll content in leaf blades improves 2.6% and 24.8%, effectively delay anaphase blade aging, increased later stage amount of dry matter, maturing stage the present invention joins to execute polyamines and enrich nitrogenous fertilizer amount of dry matter than waterflooding contrast, ridge culture, oxygenation fertilizer has increased respectively 16.6%, 15.1%, 12.3% and 16.5%; Because therefore the ample supply of material has reduced the bald point length of fruit ear, corn 100-grain weight improves, significantly increase corn yield, wherein seed 100-grain weight of the present invention than ridge culture, enrich nitrogenous fertilizer and oxygenation fertilizer and join and execute polyamines and improved respectively 7.2%, 10.7%, 4.2% and 5.4%, and corn yield show as the present invention than waterflooding contrast, ridge culture, enrich oxygen fertilizer, enrich nitrogenous fertilizer and ridge, railway carriage or compartment 20.7%, 33.2%, 12.7%, 8.1% and 20.6%, its output also contrasts a little more than not waterflooding.Visible the present invention alleviates that disaster is coerced and to improve corn yield effect more excellent.
Embodiment 7
Adopt the present invention and additive method contrast to carry out field experiment in certain proving ground, the processing area 333.3m of each method
2the test of employing Artificial flooding, carries out submerging treatment in the corn shooting stage, (1) CK1 is set: not waterflooding; (2) CK2: waterflooding; (3) T1: ridge culture+waterflooding; (4) T2: waterflooding+enrich oxygen fertilizer+spray polyamines; (5) T3: waterflooding+enrich nitrogenous fertilizer; (6) T4: waterflooding+the present invention, (7) T5: railway carriage or compartment ridge+waterflooding.Having investigated respectively the beneficial effects such as leaf area, chlorophyll, dry-matter accumulation and the output of each processing investigates and analyses.Result as shown in Figure 3 and Figure 4, take ridge culture, enrich nitrogenous fertilizer, oxygenation fertilizer joins and executes polyamines and the present invention and all can promote corn stem leaf growth after waterflooding, improve leaf colour and increase later stage greenery area, slow down the leaf senile under adverse circumstance, but different disposal measure being all with effect optimum of the present invention.Wherein ridge culture in 20 days after jointing, enrich nitrogenous fertilizer, oxygenation fertilizer and join and execute polyamines and the present invention increases by 14.5%, 8.5%, 6.8% and 10.0% than waterflooding contrast leaf area is average respectively, leaf colour also slightly increases compared with waterflooding contrast.The present invention has not only improved growing of corn after waterflooding, also photosynthetic matter accumulation amount and the output of corn have been improved, wherein dry-matter accumulation show as the present invention than ridge culture, enrich the fertile polyamines of oxygen, enrich nitrogenous fertilizer and waterflooding contrast high by 5.1%, 12.3%, 16.5%, 18.6%, economic flow rate increasing degree is respectively 4.3%, 10.1%, 12.0% and 21.2%, still alleviates disaster with the present invention and coerce and improve corn yield best results in the various measures that this experiment adopts as seen.
Embodiment 8
Adopt method of the present invention to carry out land for growing field crops comparative trial in low-lying district:
Experimental group: after harvesting wheat before corn non-tillage seeding, select the kind of resistance to waterlogging to dredge single 20,4000 plants/acre of planting densities, wide-narrow row planting, wide row 80cm, narrow row 40cm, the 5 leaf phases of corn carry out cultivation and banking and play the large ridge of duplicate rows, the high 20cm(in ridge is apart from the bottom of furrow), row spacing 50cm, joins for every mu and executes 25 kilograms of purity nitrogens, wherein execute the fertile 7 kg/mus of N seedling stage, the typhon mouth phase is executed purity nitrogen 18kg/ mu, when taking agronomy of the present invention and chemical regulation measure to process in time after the ponding waterlogging of field, after corn full maturity, gathers in the crops.
Control group: before corn non-tillage seeding, select the kind of resistance to waterlogging to dredge list 20 after harvesting wheat, wait line-spacing plantation, 4000 plants/acre of planting densities, join for every mu and execute 25 kilograms of purity nitrogens, wherein execute the fertile 7 kg/mus of N seedling stage, the typhon mouth phase is executed purity nitrogen 18kg/ mu, after corn full maturity, gathers in the crops.
Result shows, under planting type of the present invention, yield of Summer Corn the Characters is better.Compared with the control, grain number per spike increases by 5.6% to some extent, long the shortening of the bald point of summer corn, and thousand kernel weight improves 4.5%, and actual production of the present invention increases by 9.2% than control group.
Claims (3)
1. a Comprehensive Preventing control techniques for corn waterlogging disaster, is characterized in that comprising the following steps:
(1) soil ridging or the regulation and control of ridge, railway carriage or compartment: wide-and narrow-row sowing in the time of corn seeding, wide line space 70 ~ 80cm, narrow row spacing 40 ~ 50cm, the 5 leaf phases of corn are carried out cultivation and banking ridging or trench digging, ditch, at corn narrow row ridging ridging in the loose row of corn, high 15 ~ the 20cm in ridge, 25 ~ 30cm at the bottom of the rise furrow of ridge, apart from 25 ~ 30cm at the bottom of furrow, row spacing 50 ~ 60cm; Or every 4 row or 6 behavior one railway carriage or compartments, trench digging in the wide row in both sides, railway carriage or compartment, ditch depth 20 ~ 25cm, wide 30 ~ 35cm;
(2) quantitative chemical regulation and control and agronomic measures: after corn damage or crop failure caused by waterlogging occurs, enrich immediately nitrogen oxygen mixed fertilizers, take purity nitrogen fertilizer as standard metering, every mu increases fertilizing amount containing 3 ~ 6 kilograms of purity nitrogens, carry out foliage-spray spermidine chemical regulator, concentration is 0.5 ~ 1mmol/L simultaneously, in each spray sooner or later 1 time, spray continuously 2 ~ 3 days, other is the same with normal management;
(3) harvest in proper late: treat that corn ear all occurs that bract is withered, seed milk-line disappears, and gathering in the crops while being the complete physiological ripening of seed appears in black layer.
2. the Comprehensive Preventing control techniques of corn waterlogging disaster according to claim 1, is characterized in that: in described step (2), nitrogen oxygen mixed fertilizers is the mixed fertilizers that the fertile weight ratio of instant nitrogenousfertilizer and oxygenation is 2:1.
3. the Comprehensive Preventing control techniques of corn waterlogging disaster according to claim 2, is characterized in that: described oxygenation is fertile is the fertilizer containing available nitrogen 30% and active oxygen 16.5%.
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| CN105103852A (en) * | 2015-08-03 | 2015-12-02 | 丹东农业科学院 | Four-row to one-blank sparse-dense dense-sparse planting method for corn |
| CN105527385A (en) * | 2016-01-20 | 2016-04-27 | 北京市园林科学研究院 | Plant water submerging test facility and construction method |
| CN105594474A (en) * | 2015-12-22 | 2016-05-25 | 长江大学 | Dry crop wet damage identification device and identification method thereof |
| CN105961004A (en) * | 2016-05-31 | 2016-09-28 | 山东农业大学 | Corn planting method for effectively controlling water logging stress |
| CN106034633A (en) * | 2016-05-31 | 2016-10-26 | 山东农业大学 | Corn planting method based on fertilizer applying treatment and capable of effectively adjusting and controlling waterlogging stress |
| CN106146174A (en) * | 2016-08-10 | 2016-11-23 | 安徽省陆虎生物科技有限公司 | A kind of oxygen supplement coated fertilizer overcoming production continuous cropping obstacle |
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| CN110063223A (en) * | 2019-05-29 | 2019-07-30 | 福建省农业科学院果树研究所 | A method of so that dragon fruit is caused weak plant rejuvenation because of waterlogging |
| CN110317819A (en) * | 2019-07-16 | 2019-10-11 | 北京林业大学 | SPDS1 gene order, application and the method for regulating and controlling plant leaf blade ageing process |
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