CN104885611B - Method for improving soil saline alkali - Google Patents

Method for improving soil saline alkali Download PDF

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CN104885611B
CN104885611B CN201510346289.7A CN201510346289A CN104885611B CN 104885611 B CN104885611 B CN 104885611B CN 201510346289 A CN201510346289 A CN 201510346289A CN 104885611 B CN104885611 B CN 104885611B
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water
seedling
rice
alkali
soil
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CN104885611A (en
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丁锦燕
张书艮
赵帅鹏
刘佳音
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Qingdao Yuance Group Co., Ltd.
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Qingdao Yuan Ce Biology Technology Co Ltd
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Abstract

The invention relates to a method for improving soil saline alkali, belongs to the technical field of soil adjustment methods and mainly solves the problems of poor soil saline alkali improvement effects, small improvement saline alkali soil areas and low unit yields in the prior art. The method comprises fifteen steps of land flattening, seedling bed arranging, land leveling, alkali washing, alkali pressing, seed selection, seed sowing and seedling raising, greenhouse building, ventilation and temperature management, seedling water management, seedling pest control, land beating leveling, seedling transplanting, tillering stage management and booting and earing period management. By the aid of the method, by means of autotetraploid rice planting, water management strengthening, organic fertilizer increasing, integrated control of plant diseases and insect pests and land management, the soil saline alkali is improved apparently, the saline-alkali soil is improved in large area, and the yield per unit is high.

Description

The method of improved soil saline alkali
Technical field
The present invention relates to the method for improved soil saline alkali, belong to soil control method technical field.
Background technology
The basic reason that saline-alkali soil is formed is that water regime is bad, so at the improvement initial stage, emphasis should be placed on improvement soil Above the water regime of earth.Typically it is carried out in several steps, first salt discharge, the desalinization of soil by flooding or leaching, reduction soil salt content;Plant Salt And Alkali Tolerance again Plant, fertilizing soil;Last long-term cropping.Specific ameliorative measure is: draining, irrigates the desalinization of soil by flooding or leaching, warps improvement, rice cultivation, Foster and apply fertilizer improvement, level land and chemical modifying.
Current biological modification salt-soda soil method is mainly single or compound alkaline land improving technology, has following lacking Fall into: in use, the improved effect of soil salt alkalescence is poor for (1) existing biological modification salt-soda soil method;(2) improve salt-soda soil Area is little;(3) biological modification adopting, specific yield is low, deficiency in economic performance.
Content of the invention
It is an object of the invention to overcoming the defect that existing biological modification salt-soda soil method exists, there is provided a kind of conditioned soil The method of earth saline alkali, using the advantage of Autotetraploidy Rice saline-alkali tolerance, directly plants the same of Salt And Alkali Tolerance on salt-soda soil Source Tetraploid Rice, thus significantly improving soil salt alkalescence, large area improves salt-soda soil, and specific yield is high.
The present invention is to be realized using following technical scheme.The method of improved soil saline alkali, the method includes as follows Step:
A kind of method of improved soil saline alkali, the method comprises the steps:
Step one, prepartion of land: plot partition number, every piece of area, in 3-4 mu, ploughs deeply 30cm, carries out land for growing field crops training simultaneously Fertile;
Step 2, seedling bed arrange: seedling bed ditch depth 30cm, and row spacing is 120cm;
Step 3, ground levelling: ploughed depth 12-15cm, rake, whole thin, the monolithic soil discrepancy in elevation is less than 5cm;
Step 4, soda: water is poured in ground, depth of water 5-10cm, soaked field was stirred using no-tillage machine after 2 days, made soil In earth, salinity fully dissolves, then draining, makes the salt in soil enter alkali canal with water, so repeats 2-3 time;
Step 5, pressure alkali: after the completion of soda, pour water immediately in plot, water depth 10-15cm, carries out big hydraulic pressure alkali, hereafter Can not cut off the water supply in plot, the pressure alkali time was at least 7 days;
Step 6, seed selection: airing seed 2-3 days, choose full grains, Salt And Alkali Tolerance Autotetraploidy Rice of the same size Seed, and rice paddy seed is stirred in concentration is for 25% prochloraz solution, drain away the water after 24h and carry out second immersion, the Drain away the water after secondary immersion 24h and carry out soaking for the third time, after immersion, seed is drained, the standby sowing of airing;
Step 7, sowing seedling: grain weight 8-10 pound/acre;
Step 8, scaffolding: rice seedling bed surrounding builds the shed that height is 40 50cm;
Step 9, ventilation and temperature treatment: after planting 5-7 days, open the ventilation of shed two;Rice shoot length is to a leaf wholeheartedly Phase, temperature control is within 30 DEG C;Two leaf one heart stage, temperature control is for 28 DEG C -30 DEG C;After SANYE one heart stage, take off film completely;
Step 10, seedling stage water management: Qi Miao, to transplanting, control water;Two leaves are wholeheartedly to tri-leaf period, moisturizing;Four leaf stage is to shifting Before cultivation, control water;Ensure there is water to height of seedling 3-5cm on seedling bed before rice transplanting;
Step 11, seedling stage diseases and pests preventing and treating: spray enclosed weeding agent before scaffolding, in two leaves wholeheartedly to SANYE one heart stage Between, manually cut weeds;Two leaf one heart stage, mu concentration is risen for 10% rice, is watered 20 kilograms of even spraying, every mu of chlopyrifos 70ml mixes native 20-30kg;Spray strong matter root methylate thiophanate, jingganmycin, virus stock solution used in two leaf one heart stage, spray 2-3 Secondary;First 1 day in transplanting, it is 80% carbendazol wettable powder 80 that 40 grams of victory wettable powder plus concentration are opened up with 40% in every mu of seedbed Gram plus concentration be that to add concentration be 20 milliliters of 2% virus stock solution used to 5% jingganmycin water preparation 150-200 milliliter, be watered 40 kilograms uniform Manually or electrically spray;
Step 12, soil making beating water leveling: carry out within 1-2 days before rice transplanting;
Step 13, rice transplanting: every cave 1-2 strain, line-spacing 30cm, spacing in the rows 20cm, the depth of transplanting seedlings is less than 2cm;Diformazan Bentazone, 0.5 bottle of every mu of dichloro quinolinic acid are watered 20 kg of solution and just spray;Concentration is 40% cyanogen fluorine essence every mu of 70ml of oxazole Mix native 20-30kg;150-200 gram of metrifonate is watered 50-100 kilogram of spraying preventing and treating borer;
Step 14, tiller period management: seedling-protection of pouring water before period of seedling establishment, depth of water 6-7cm, shallow water frequent irrigation after the ineffective tillering phase, Water layer 3-5cm;
Step 15, pregnant period management of taking out: draining or dry method in good time dry field 2-5 days of naturally falling;Boot stage adopts gap Irrigate, rice field water layer 3-5cm;Heading and seeding stage does the wet irrigation of dry and wet, rice field water layer 3-5cm;Mid-August using machinery spray into Row disease pest and weed integrated control.
Preferably, plot has an independent irrigation and drainage ability and fosters and apply fertilizer manure use in land for growing field crops: chicken manure, 3-5 ton/mu.
Preferably, select one piece on the sunny side, the square soil that fills of wind sheltering, water as nursery rice seedling bed.
Preferably, after the completion of soda, particularly summer high temperature when, rice field whether hydropenia to be observed daily, oozed according to plot The water yield carries out moisturizing.
Preferably, carry out within first 20 days water leveling in rice transplanting, because having ploughed seedling bed in advance during seedling bed soda, so not being stirred for straight Connect draining of pouring water, soda and pressure alkali are carried out after water leveling.
Preferably, seedling bed is in water covering due to pressure alkali, first drains moisture, then by the above-mentioned rice seed soaking Sub- uniform broadcasting, on seedling bed, using wooden winnowing spade by seed press-in seedling soil, finally sprays enclosed weeding medicament and carries out seedling bed and go out Grass: 17.2% dimepiperate.200 grams/acre of bensulfuron-methyl wettable powder is watered 20kg.
Preferably, shed carries out night covering when meeting low temperature.
Preferably, after planting 5-7 days, the ventilation of shed two can suitably be opened;Neat after seedling 7 days about, early 8-9 point opens two Head, afternoon, 3-4 point envelope was incubated in fact;Two leaf one heart stage, take off about fine day morning 8-9 point, 10 points about of cloudy morning takes off, light rain rain Before take off, take off after heavy rain rain, low temperature is then postponed and taken off film or do not take off, accomplish to take off day night lid;After SANYE one heart stage, can take off completely film, daytime Night is aerated.
Preferably, rice shoot length to four leaves wholeheartedly when, above-mentioned seedling with adhering soil is dug out from rice seedling bed, is transplanted in rice field manual inserting Seedling, rice transplanting carries out changing water immediately after finishing, the salt alkali content rising of water of walking about down on the farm during preventing and treating rice transplanting causes dead seedling, changes After water, the depth of water is not flooded the seedling heart and is defined.
Preferably, turn green 30 days, comprise period of seedling establishment, productive tiller stage, three processes of ineffective tillering phase, meet heavy rain weather, Can water-retention, but water layer be less than 5cm, too deep timely draining.
The invention has the beneficial effects as follows:
(1) method of this improved soil saline alkali, applying organic manure, provides comprehensive desired nutritional, particularly provides micro- Amount nutrient;
(2) method of this improved soil saline alkali, saline soil is applied by seedling bed, it can quickly reduce containing of soil Salt amount and acid-base value, improve the physicochemical character of soil, and the yield and quality of crop is greatly improved;
(3) method of this improved soil saline alkali, strengthens water management, and that grasps each period of duration of Oryza sativa L. needs water feature, section Learn and reasonably carry out water management, emphasis is exactly desalinization of soil by flooding or leaching alkali;
(4) method of this improved soil saline alkali, has independent irrigation and drainage ability, improves capacity to combat natural adversities;
(5) method of this improved soil saline alkali, using Autotetraploidy Rice, has fertilizer resistance anti-lodging volt, Salt And Alkali Tolerance, anti-rice Pestilence, anti-cold, early growth and quick tiller, straw staygreen feature;
(6) method of this improved soil saline alkali, the integrated control of pest and disease damage, safely using pesticide, prevent pesticide pair Agricultural product and environment.
Specific embodiment
With reference to embodiment, the invention will be further described.
Embodiment 1:
Step one, prepartion of land: plot partition number, every piece of area, in 3-4 mu, ploughs deeply 30cm, carries out land for growing field crops training simultaneously Fertile;
Step 2, seedling bed arrange: seedling bed ditch depth 30cm, and row spacing is 120cm;
Step 3, ground levelling: ploughed depth 12-15cm, rake, whole thin, the monolithic soil discrepancy in elevation is less than 5cm;
Step 4, soda: water is poured in ground, depth of water 5-10cm, soaked field was stirred using no-tillage machine after 2 days, made soil In earth, salinity fully dissolves, then draining, makes the salt in soil enter alkali canal with water, so repeats 2-3 time;
Step 5, pressure alkali: after the completion of soda, pour water immediately in plot, water depth 10-15cm, carries out big hydraulic pressure alkali, hereafter Can not cut off the water supply in plot, the pressure alkali time was at least 7 days;
Step 6, seed selection: airing seed 2-3 days, choose full grains, Salt And Alkali Tolerance Autotetraploidy Rice of the same size Seed, and rice paddy seed is stirred in concentration is for 25% prochloraz solution, drain away the water after 24h and carry out second immersion, the Drain away the water after secondary immersion 24h and carry out soaking for the third time, after immersion, seed is drained, the standby sowing of airing;
Step 7, sowing seedling: grain weight 8-10 pound/acre;
Step 8, scaffolding: rice seedling bed surrounding builds the shed that height is 40 50cm;
Step 9, ventilation and temperature treatment: after planting 5-7 days, open the ventilation of shed two;Rice shoot length is to a leaf wholeheartedly Phase, temperature control is within 30 DEG C;Two leaf one heart stage, temperature control is for 28 DEG C -30 DEG C;After SANYE one heart stage, take off film completely;
Step 10, seedling stage water management: Qi Miao, to transplanting, control water;Two leaves are wholeheartedly to tri-leaf period, moisturizing;Four leaf stage is to shifting Before cultivation, control water;Ensure there is water to height of seedling 3-5cm on seedling bed before rice transplanting;
Step 11, seedling stage diseases and pests preventing and treating: spray enclosed weeding agent before scaffolding, in two leaves wholeheartedly to SANYE one heart stage Between, manually cut weeds;Two leaf one heart stage, mu concentration is risen for 10% rice, is watered 20 kilograms of even spraying, every mu of chlopyrifos 70ml mixes native 20-30kg;Spray strong matter root methylate thiophanate, jingganmycin, virus stock solution used in two leaf one heart stage, spray 2-3 Secondary;First 1 day in transplanting, it is 80% carbendazol wettable powder 80 that 40 grams of victory wettable powder plus concentration are opened up with 40% in every mu of seedbed Gram plus concentration be that to add concentration be 20 milliliters of 2% virus stock solution used to 5% jingganmycin water preparation 150-200 milliliter, be watered 40 kilograms uniform Manually or electrically spray;
Step 12, soil making beating water leveling: carry out within 1-2 days before rice transplanting;
Step 13, rice transplanting: every cave 1-2 strain, line-spacing 30cm, spacing in the rows 20cm, the depth of transplanting seedlings is less than 2cm;Diformazan Bentazone, 0.5 bottle of every mu of dichloro quinolinic acid are watered 20 kg of solution and just spray;Concentration is 40% cyanogen fluorine essence every mu of 70ml of oxazole Mix native 20-30kg;150-200 gram of metrifonate is watered 50-100 kilogram of spraying preventing and treating borer;
Step 14, tiller period management: seedling-protection of pouring water before period of seedling establishment, depth of water 6-7cm, shallow water frequent irrigation after the ineffective tillering phase, Water layer 3-5cm;
Step 15, pregnant period management of taking out: draining or dry method in good time dry field 2-5 days of naturally falling;Boot stage adopts gap Irrigate, rice field water layer 3-5cm;Heading and seeding stage does the wet irrigation of dry and wet, rice field water layer 3-5cm;Mid-August using machinery spray into Row disease pest and weed integrated control.
Plot has an independent irrigation and drainage ability and fosters and apply fertilizer in land for growing field crops manure use: chicken manure, 3-5 ton/mu.
Select one piece on the sunny side, the square soil that fills of wind sheltering, water as nursery rice seedling bed.
After the completion of soda, particularly summer high temperature when, rice field whether hydropenia to be observed daily, carried out according to plot water percolating capacity Moisturizing.
Carry out within first 20 days water leveling in rice transplanting, because having ploughed seedling bed in advance during seedling bed soda, so not being stirred for directly pouring water Draining, soda and pressure alkali are carried out after water leveling.
Seedling bed is in water covering due to pressure alkali, first drains moisture, then will be uniform for the above-mentioned rice paddy seed soaking It is sown on seedling bed, using wooden winnowing spade by seed press-in seedling soil, finally spray enclosed weeding medicament and carry out seedling bed weed eradication: 17.2% dimepiperate.200 grams/acre of bensulfuron-methyl wettable powder is watered 20kg.
Shed carries out night covering when meeting low temperature.
After planting 5-7 days, can suitably open the ventilation of shed two;Neat after seedling 7 days about, early 8-9 point opens two, afternoon 3-4 point envelope is real to be incubated;Two leaf one heart stage, take off about fine day morning 8-9 point, 10 points about of cloudy morning takes off, and takes off, greatly before light rain rain Take off after rain rain, low temperature is then postponed and taken off film or do not take off, accomplish to take off night lid day;After SANYE one heart stage, film can be taken off completely, be led to round the clock Wind.
Rice shoot length to four leaves wholeheartedly when, above-mentioned seedling with adhering soil is dug out from rice seedling bed, is transplanted to transplanting rice seedling by hand in rice field, rice transplanting Carry out changing water after finishing immediately, the salt alkali content rising of water of walking about down on the farm during preventing and treating rice transplanting causes dead seedling, changes Shui Houshui Deeply do not flood the seedling heart to be defined.
Turn green 30 days, comprise period of seedling establishment, productive tiller stage, three processes of ineffective tillering phase, meet heavy rain weather, can water-retention, But water layer is less than 5cm, too deep timely draining.
Embodiment 2:
Applying organic manure, chicken manure, 3-5 ton/mu.Fertilizer contains various nutrient elements, except nitrogenous, phosphorus, potassium a great number of elements Outward, also contain the moderate-element needed for many crops, rice of feeding water promotes comprehensive desired nutritional, particularly provides trace element Nutrition.Quality and the palatability of rice can be improved simultaneously.Fertilizer contains organic and humus, energy improved soil structure, coordinates The water of soil, fertilizer, air and heat, strengthen venting and water permeable ability and fertilizer conservation, water conservation, fertilizer, the water supply capacity of soil.Fertilizer contains Auxin, vitamin, humic acid and aminoacid organic substance, can play special work to rice nutrition physiology and Biochemical processes With moreover it is possible to provide carbon dioxide to be used for Rice Photosynthesis.Fertilizer resiliency is big, can relax soil ph and become Change, can remove or mitigate the harm of the many Oryza sativa L. of salt bases soil.The fertilizer suitability is wide, and all kinds of soil are all suitable for.And it is favourable In controlling widespread pollution from the overuse of fertilizers and pesticides in rural area, preserve the ecological environment.
Embodiment 3:
Saline soil, saline and alkaline improvement moisture agent are applied on seedling bed, adjustment carbon-nitrogen ratio changes soil aggregate, adjusts sodium Ion and calcium ion, than reducing sodium ion activity, reduce salt damage;Using plant secretion thing organic acid, reduce ph value;Absorption salt from Son, precipitation;Increase soil permeability, increase oxygen and biological activity.It is (entirely micro- that saline and alkaline improvement granule increases crop full nutrition Secondary element);Root system of plant is promoted to absorb;Balance N P and K effect, reduce fertilizer waste, reduce soil acidity or alkalinity, reduce ph value, Absorption sodium ion.
Embodiment 4:
It should be noted that the present invention needs in each stage of paddy growth, rational use of chemical fertilizer, select sulphur ammonium as far as possible And superphosphate fertilizer.Sulphur ammonium can be adsorbed by soil colloid due to ammonium ion, unsuitable leaching loss, can make base manure deep placement.Peroxophosphoric acid Calcium water soluble phosphorous fertilizer be preferably used for neutrality, alkalescence, in calacareous soil.By rational use of chemical fertilizer, it is possible to reduce soil compaction, acid Change, salinization of soil phenomenon.
Embodiment 5:
Consolidation: independent irrigation and drainage ability, the high low head in single field are less than 5 centimetres.For the ease of management, plot subregion is compiled Number, fall in conjunction with soil difference of height, using ridger ridge building, every piece of area, in 3-4 mu, has independent irrigation and drainage ability, carries out afterwards Plough deeply 30cm go out blue or green shine native (at the beginning of 3 months), carry out land for growing field crops simultaneously and foster and apply fertilizer.
Embodiment 6:
Using Autotetraploidy Rice.Using the advantage of Autotetraploidy Rice saline-alkali tolerance, salt-soda soil is directly planted Plant the Autotetraploidy Rice of Salt And Alkali Tolerance, thus improved soil saline alkali.Diploid rice is utilized modern biotechnology to induce Become Autotetraploidy Rice, carry out salt tolerance afterwards, filter out the Oryza sativa L. new germ plasm with anti-saline-alkali property, implantation methods Comprise the following steps: a, rice seed disinfection;B, accelerating germination;C, rice seedling bed prepare;D, seeding and seedling raising;E, land for growing field crops arrange;F, rice transplanting;G, apply Fertile;H, irrigation;I, the prevention and control of plant diseases, pest control;J, results.
Embodiment 7:
Strengthen water management: emphasis is exactly desalinization of soil by flooding or leaching alkali.The seedling stage water management of step 10, Qi Miao to transplant, should with control water, Based on strong root, strong sprout, wholeheartedly to tri-leaf period, rice shoot leaf area increases two leaves and root system is still unsound, sensitive to water deficit, often Leaf roll dead seedling occurs, therefore, meeting drought should suitable moisturizing;Four leaf stage strict control water to before transplant, noon blade does not roll up not moisturizing;Insert Ensure there is water to height of seedling 3-5cm on seedling bed before seedling;The water management in the tillering stage of step 14, beginning of turning green, through 30 days, comprises Period of seedling establishment, productive tiller stage, three processes of ineffective tillering phase;Transplant to before turn green seedling-protection of should pouring water, depth of water 6-7cm, after turning green Answer shallow water frequent irrigation, water layer 3-5cm, or dew mud, dried in the air field according to plot salinization and alkalization, can not dry in the air field in heavier plot, easily Cause dead seedling, lighter plot needs the short time to dry in the air field, time unsuitable long, the easy accumulation of salt in the surface soil of soil, meet heavy rain weather, can water-retention, But water layer is advisable less than 5cm, too deep timely draining;Phase panicle primordium dif ferentiation stage water management is taken out in the pregnant of step 10 six: takes draining Or the in good time dry field of dry method that naturally falls, but will be carried out respectively with soil alkaline degree, the high dry field of salinization and alkalization 2 days is Preferably, irrigated, prevented the temperature too high soil accumulation of salt in the surface soil;Low can dry field being irrigated after 4-5 days of salinization and alkalization;Boot stage water It is in charge of reason: intermittent irrigation.Keep rice field water layer 3-5cm, prevent that dehydration is suffered from drought, a water-retention be less than 5 days, with pour water with overboard Alternate intermittent irrigation method;Heading and seeding stage water management: the wet irrigation of dry and wet.Keep rice field water layer 3-5cm, with pouring water and falling Irrigation method between aqueous phase, i.e. alternation of wetting and drying.
Embodiment 8:
The integrated control of pest and disease damage.As shown in Table 1, seedling stage diseases and pests preventing and treating: spray enclosed weeding agent before scaffolding;Two Leaf wholeheartedly to SANYE wholeheartedly period, is manually cut weeds, preventing and treating injury rice shoot;In two leaf one heart stage, mu concentration is 10% Rice rises (suspending agent of 6.7% fipronil bisamide and 3.3% avilamycin ratio mixture), is watered 20 kilograms of even spraying, Simultaneous can control rice thripses simultaneously;Chlopyrifos (40% cyanogen fluorine essence oxazole) every mu of 70ml mixes native 20-30kg preventing and treating red line worm;Damping-off will Carry out preventing and treating on the basis of daily observation, can start to spray strong matter root methylate thiophanate, jingganmycin, disease in two leaf one heart stage Toxogen liquid, typically sprays 2-3 time;First 1 day in transplanting, victory (Mobucin is opened up with 40% in every mu of seedbed.Pymetrozine) wettable powder 40 grams plus concentration are 80 grams of 80% carbendazol wettable powder plus concentration adds concentration for 5% jingganmycin water preparation 150-200 milliliter For 20 milliliters of 2% virus stock solution used, it is watered 40 kilograms and uniformly manually or electrically sprays;Tillering stage: diformazan bentazone, dichloro quinolinic acid 0.5 bottle every mu is watered 20 kg of solution and just sprays, and kills phragmites communiss, Herba Cyperi Iriae;Every mu of chlopyrifos (40% cyanogen fluorine essence oxazole) 70ml mixes native 20-30kg preventing and treating red line worm, needs secondary deinsectization;150-200 gram of metrifonate is watered 50-100 kilogram of spraying preventing and treating and bores Heart worm;Pregnant take out the phase: mid-August carries out integrated control using machinery sprinkling.The pesticide used during integrated pest prevention and control Configuration detail list, refers to table one.
Table one
Certainly, the above is only the preferred embodiment of invention it is impossible to be considered for limiting to inventive embodiment model Enclose.Invention is also not limited to illustrate, and it is equal that those skilled in the art are made in the essential scope of invention Change and improvement, all should belong in the patent covering scope of invention.

Claims (10)

1. a kind of method of improved soil saline alkali it is characterised in that: the method comprises the steps:
Step one, prepartion of land: plot partition number, every piece of area, in 3-4 mu, ploughs deeply 30cm, carries out land for growing field crops simultaneously and fosters and apply fertilizer;
Step 2, seedling bed arrange: seedling bed ditch depth 30cm, and row spacing is 120cm;
Step 3, ground levelling: ploughed depth 12-15cm, rake, whole thin, the monolithic soil discrepancy in elevation is less than 5cm;
Step 4, soda: water is poured in ground, depth of water 5-10cm, soaked field was stirred using no-tillage machine after 2 days, made in soil Salinity fully dissolves, then draining, makes the salt in soil enter alkali canal with water, so repeats 2-3 time;
Step 5, pressure alkali: after the completion of soda, pour water immediately in plot, water depth 10-15cm, carries out big hydraulic pressure alkali, hereafter plot Can not cut off the water supply, the pressure alkali time was at least 7 days;
Step 6, seed selection: airing seed 2-3 days, choose full grains, Salt And Alkali Tolerance Autotetraploidy Rice kind of the same size Son, and rice paddy seed is stirred in concentration is for 25% prochloraz solution, drain away the water after 24h and carry out second immersion, second Drain away the water after secondary immersion 24h and carry out soaking for the third time, after immersion, seed is drained, the standby sowing of airing;
Step 7, sowing seedling: grain weight 8-10 pound/acre;
Step 8, scaffolding: rice seedling bed surrounding builds the shed that height is 40 50cm;
Step 9, ventilation and temperature treatment: after planting 5-7 days, open the ventilation of shed two;Rice shoot length is to a leaf one heart stage, temperature Degree controls within 30 DEG C;Two leaf one heart stage, temperature control is for 28 DEG C -30 DEG C;After SANYE one heart stage, take off film completely;
Step 10, seedling stage water management: Qi Miao, to transplanting, control water;Two leaves are wholeheartedly to tri-leaf period, moisturizing;Before four leaf stage is extremely transplanted, Control water;Ensure there is water to height of seedling 3-5cm on seedling bed before rice transplanting;
Step 11, seedling stage diseases and pests preventing and treating: spray enclosed weeding agent before scaffolding, in two leaves wholeheartedly to SANYE wholeheartedly period, enter Pedestrian's work is cut weeds;Two leaf one heart stage, mu concentration is risen for 10% rice, is watered 20 kilograms of even spraying, every mu of 70ml of chlopyrifos Mix native 20-30kg;Spray strong matter root methylate thiophanate, jingganmycin, virus stock solution used in two leaf one heart stage, spray 2-3 time;? Transplant first 1 day, it is that 80 grams of 80% carbendazol wettable powder adds that 40 grams of victory wettable powder plus concentration are opened up with 40% in every mu of seedbed Concentration for 5% jingganmycin water preparation 150-200 milliliter add concentration be 20 milliliters of 2% virus stock solution used, be watered 40 kilograms uniformly manual Or electric atomizing;
Step 12, soil making beating water leveling: carry out within 1-2 days before rice transplanting;
Step 13, rice transplanting: every cave 1-2 strain, line-spacing 30cm, spacing in the rows 20cm, the depth of transplanting seedlings is less than 2cm;Diformazan weed eradication Each 0.5 bottle of pine, every mu of dichloro quinolinic acid is watered 20 kg of solution and just sprays;Concentration is that 40% cyanogen fluorine essence every mu of 70ml of oxazole mixes Native 20-30kg;150-200 gram of metrifonate is watered 50-100 kilogram of spraying preventing and treating borer;
Step 14, tiller period management: seedling-protection of pouring water before period of seedling establishment, depth of water 6-7cm, shallow water frequent irrigation, water layer after the ineffective tillering phase 3-5cm;
Step 15, pregnant period management of taking out: draining or dry method in good time dry field 2-5 days of naturally falling;Boot stage adopts intermittent irrigation, Rice field water layer 3-5cm;Heading and seeding stage is irrigated, rice field water layer 3-5cm;It is comprehensive that mid-August carries out disease pest and weed using machinery sprinkling Close preventing and treating.
2. improved soil saline alkali according to claim 1 method it is characterised in that: plot has independent irrigation and drainage ability And land for growing field crops fosters and apply fertilizer manure use: chicken manure, 3-5 ton/mu.
3. improved soil saline alkali according to claim 1 method it is characterised in that: select one piece on the sunny side, wind sheltering, water The square soil filling is as the rice seedling bed of nursery.
4. improved soil saline alkali according to claim 1 method it is characterised in that: after the completion of soda, summer high temperature When, rice field whether hydropenia to be observed daily, moisturizing is carried out according to plot water percolating capacity.
5. improved soil saline alkali according to claim 1 method it is characterised in that: carry out water within first 20 days in rice transplanting whole Flat, because having ploughed seedling bed in advance during seedling bed soda, so not being stirred for draining of directly pouring water, soda and pressure alkali are laggard in water leveling OK.
6. improved soil saline alkali according to claim 1 method it is characterised in that: seedling bed is in water and is covered due to pressure alkali Moisture is first drained by Gai Zhong, then by the above-mentioned rice paddy seed uniform broadcasting soaked on seedling bed, using wooden winnowing spade by seed pressure Enter in seedling soil, finally spray enclosed weeding medicament and carry out seedling bed weed eradication: 17.2% dimepiperate. bensulfuron-methyl wettable powder 200 grams/acre are watered 20kg.
7. improved soil saline alkali according to claim 1 method it is characterised in that: shed meet low temperature when enter Pheropsophus jessoensis Mor. Between cover.
8. improved soil saline alkali according to claim 1 method it is characterised in that: after planting 5-7 days, can suitably beat Open the ventilation of shed two;Neat after seedling 7 days about, early 8-9 point opens two, and afternoon, 3-4 point envelope was incubated in fact;Two leaf one heart stage, fine Take off between its morning 8-9 point, 10 points about of cloudy morning takes off, and takes off, take off after heavy rain rain before light rain rain, low temperature is then postponed and taken off film or not Take off, accomplish to take off night lid day;After SANYE one heart stage, film can be taken off completely, be aerated round the clock.
9. improved soil saline alkali according to claim 1 method it is characterised in that: rice shoot length to four leaves wholeheartedly when, Above-mentioned seedling with adhering soil is dug out from rice seedling bed, is transplanted to transplanting rice seedling by hand in rice field, rice transplanting carries out changing water immediately after finishing, prevent and treat rice transplanting During walk about down on the farm water salt alkali content rise cause dead seedling, after changing water, the depth of water is not flooded the seedling heart and is defined.
10. improved soil saline alkali according to claim 1 method it is characterised in that: turn green 30 days, comprise to turn green Phase, productive tiller stage, three processes of ineffective tillering phase, meet heavy rain weather, can water-retention, but water layer be less than 5cm, too deep timely row Water.
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