CN103518527A - Water-saving fertilizer-saving method for crop rotation of winter wheat and summer maize - Google Patents

Abstract

The invention discloses a water-saving fertilizer-saving method for crop rotation of winter wheat and summer maize and belongs to the technical field of agriculture. The water-saving fertilizer-saving method comprises a wheat planting method and a maize planting method, wherein the wheat planting method and the maize planting method both comprise steps of seeding, fertilizing, irrigating, field management, chemical weeding, pest control, harvesting and the like, and all the wheat and maize straws are returned to the fields. By means of the water-saving fertilizer-saving method, the effect of water saving, fertilizer saving and high yield is improved, the fertilizer utilization rate is increased, and fertilizing labor intensity and cost are reduced.

Description

A kind of winter wheat Summer Maize Rotation water saving economizes fertile method

Technical field

The invention belongs to agricultural technology field, especially relate to a kind of winter wheat Summer Maize Rotation water saving and economize fertile method.

Background technology

China is large agricultural country, and winter wheat, summer corn are the large important cereal crops of China two, for meeting High-yielding Winter Wheat, summer corn, need the requirement of fertilizer, law of needing the water, in winter wheat Summer Maize Rotation, wheat and corn applies fertilizer separately at present, does not consider the service condition of fertilizer, need to repeatedly apply fertilizer and topdress, water, and utilization rate of fertilizer is lower, fertilising labour intensity and the cost also reality of compare great ，Yu China rural laborer shortage are extremely inadaptable.Therefore, for agricultural economy and state-of-the-art in major grain producing area winter wheat, Summer Maize Rotation, in conjunction with organic and inorganic fertilizer research winter wheat, Summer Maize Rotation, simplify fertilising, sprinkling technique, to continuing to improve the output of winter wheat and summer corn, reduce production costs, have great importance.

Summary of the invention

Technical problem to be solved by this invention is: provide a kind of winter wheat Summer Maize Rotation water saving to economize fertile method, can reach the effect that water saving economizes fertile high yield.

For solving the problems of the technologies described above, technical scheme of the present invention is:

Summer Maize Rotation water saving economizes a fertile method, it is characterized in that,

The fertilizing amount of the annual per hectare in middle product field is: purity nitrogen (N) 420kg～500kg, phosphorus (P ₂o ₅) 210kg～260kg, potassium (K ₂o) 300kg～350kg, zinc sulphate (ZnSO ₄) 60kg～80kg, enrich high-quality fertilizer 30000kg;

The fertilizing amount of the annual per hectare in high-yield field is: purity nitrogen (N) 550kg～600kg, phosphorus (P ₂o ₅) 240kg～300kg, potassium (K ₂o) 330kg～380kg, zinc sulphate (ZnSO ₄) 60kg～80kg, fertilizer 45000kg;

Described method comprises wheat planting method and corn planting method;

Described wheat planting method comprises the following steps:

1. wheat cultivation

Seed is selected: select that individual plant productivity is high, resistant to lodging, disease-resistant, the winter habit of strong stress resistance or semiwinterness kind; Described seed purity >=99.0% of selecting, moisture≤13.0%, germination rate >=85.0%, cleanliness >=99.0%:

Seed treatment: use seed coat agent dressing before sowing;

Whole ground: maize straw, and pulverizing evenly, rotary tillage, deep ploughing, subsoiling, rake the soil level, ridging, the plot of above rotary tillage in continuous 3 years, should deep plough or more than subsoiling 25cm, abolish tillage pan, rake leveling is ploughed in suppression after ploughing, and makes in topsoil soils Panasonic real; The plot of deep ploughing in nearest 3 years, can rotary tillage 2 times, tilling depth > 10cm;

Sowing: use sower to sow, the straw-returning plot of the moisture creating of not watering, after planting again with packer suppression 1～2 time; Described suitable sowing date is 3～October 12 October;

The computing formula of the seeding quantity of above-mentioned seeding process is:

$Q=\frac{N\×W}{1000\×1000\×\mathrm{Qr}\×\mathrm{Sr}}$

In formula:

Q: seeding quantity, unit is a kilogram per hectare (kg/hm2);

N: per hectare plan basic seedling amount;

W: thousand kernel weight, unit is gram (g);

Qr: germination rate (%);

Sr: emergence rate (%);

2. wheat fertilizing

Base fertilizer: base fertilizer applies in conjunction with seedbed preparation is disposable;

Middle product field by 25% and whole fertilizer of nitrogenous fertilizer, phosphate fertilizer 60%, potash fertilizer 55% make base fertilizer, high-yield field by 22% and whole fertilizer of nitrogenous fertilizer, phosphate fertilizer 60%, potash fertilizer 55% make base fertilizer;

Topdress: middle product field, middle fringe type and large-spike cultivar all in the phase of standing up to the jointing initial stage, in conjunction with the Nitrogen Top Dressing that waters 20%.High-yield field, the large-spike cultivar that rate of tillering panicle is low, jointing initial stage (1.5cm～2.0cm elevates above the soil between base portion first segment), in conjunction with 23% of the Nitrogen Top Dressing that waters; The middle fringe type kind that rate of tillering panicle is high, to mid-term, imposes 23% nitrogenous fertilizer at the jointing initial stage in conjunction with watering.

3. wheat is irrigated;

Described irrigation method is infiltrating irrigation, sprinkling irrigation or furrow irrigation;

Water winter water: in late November to early December, water winter water, daily mean temperature starts while being down to 3 ℃～5 ℃ to irrigate, irrigation quantity 600m ³/ hm ², when soil moisture content is suitable after winter irrigation, draw hoe;

Water jointing water: large-spike cultivar, before the shooting stage or the jointing initial stage water; Middle fringe type kind, jointing initial stage or connective phase in mid-term water; Irrigation quantity per hectare 600m ³～750m ³;

Later stage water management: wheat was chosen when the flag phase, soil moisture content was poor and watered, when soil moisture content is better, postpones to flowering stage and watering, and does not rewater later; As wheat choose the flag phase and flowering stage soil moisture content better, can postpone to Early filling stage and watering; Irrigation quantity 450m ³/ hm ²～600m ³/ hm ²;

4. wheat field management

Looking into seedling reseeds;

In good time intertillage: wheat tri-leaf period to jointing, whenever rainfall or water after, intertill 2～3 times, the wheatland that the total stem number of per hectare before the winter is greater than to 1,200 ten thousand, suppresses or deeply weeds and be completely cured, the described degree of depth 8-12cm that deeply weeds;

Freezing prevention: draw hoe early spring, the wheat initial stage of turning green imposes instant nitrogenousfertilizer and irrigates, and topdressing amount is purity nitrogen 120kg/hm ²～150kg/hm ², irrigation volume 300m ³/ hm ²～450m ³/ hm ²; There is chilling injury in wheat during jointing stage generation cold in the late spring or booting stage, imposes instant nitrogenousfertilizer and irrigate, and topdressing amount is purity nitrogen 120kg/hm ²～150kg/hm ², irrigation volume 300m ³/ hm ²～450m ³/ hm ²;

5. chemical weed control: the 3 leaf phases of wheat or turn green after carry out chemical weed control 1 time;

6. the extermination of disease and insect pest:

Wheat Seedling: soil insect is with the chlopyrifos spraying of 40% phoxim emulsifiable concentrate or 20% or fill with root control; Be combined with Imidacloprid and red white mite extremely prevents and treats two spotted spider mite and aphid;

Turn green to the shooting stage: 5% jinggangmeisu aqua 8L～6L for per hectare, be watered 15L, spraying prevents and treats banded sclerotial blight and powdery mildew;

Bloom to the pustulation period: 70% thiophanate-methyl wetting powder, 10% Imidacloprid, 20% fenpropathrin milk oil and 0.2%～0.3% potassium dihydrogen phosphate are watered and are mixed, spray;

7. harvesting wheat

The harvesting of use combine, wheat straw farmland returning, stubble height≤15cm during results, crushed stalk length≤10cm, stalks cutting qualification rate >=90%, and evenly shed;

Described corn planting method comprises the following steps:

1. corn seeding

Seed is selected: select that high yield, resistance, plant type are compacter, the mid-early maturity breeding of resistance to dense planting, seed purity >=98% of selected seed, germination rate >=90%, cleanliness >=98%, water content≤13%;

Seed treatment: use seed coat agent dressing before sowing;

Sowing: described suitable sowing date is 5～June 20 June; Seeding quantity is 30kg/hm ²～50kg/hm ²; Planting density is 60000～75000 strains/hm ²; When described seeding method is no-tillage seeding, line-spacing is 60 ± 5cm; When described seeding method is stubble-cleaning sowing, line-spacing is generally 70cm～80cm or 30cm～50cm; Seed level 3cm～5cm;

2. corn fertilizing

Seed manure: using nitrogenous fertilizer 20% with phosphate fertilizer 40%, potash fertilizer 45%, 50% the applying as seed manure of sulfuric acid zinc fertilizer;

Topdress: impose in conjunction with shooting stage or interim plough of toy trumpet mouth, 35% of Nitrogen Top Dressing, described in topdress position at plant row side 10cm～15cm, fertile bandwidth 3cm～5cm, degree of depth 8cm～10cm, earthing after fertilising;

3. Corn Irrigation;

Described irrigation method is infiltrating irrigation, sprinkling irrigation or furrow irrigation;

Irrigation time: during field capacity≤55%,

4. corn field management

Seedling, final singling during 4～5 leaves,

Shooting stage or toy trumpet mouth phase, in conjunction with weeding and the intertillage in time 1 time of topdressing;

5. chemical weed control

6. the extermination of disease and insect pest

7. harvest corn:

Straw-returning after harvest corn, described crushed stalk length≤10cm, chopping qualification rate >=90%, stubble height≤8cm;

After harvest corn completes, again carry out wheat planting, corn planting, the rest may be inferred.

Preferably, described sower is wheat seed planter, wide secondary precision seeder or the sowing of half precision seeder, and described average row is apart from being 20cm～25cm, and sowing depth is 3cm～5cm.

Preferably, in corn seeding step, seeding method adopts monoseeding.

Adopted technique scheme, beneficial effect of the present invention is: can reach the effect that water saving economizes fertile high yield, improve utilization rate of fertilizer, reduce fertilising labour intensity and cost.

Embodiment

Below in conjunction with embodiment, the present invention is further described.

The fertilizing amount of the annual per hectare in middle product field is: purity nitrogen (N) 420kg～500kg, phosphorus (P ₂o ₅) 210kg～260kg, potassium (K ₂o) 300kg～350kg, zinc sulphate (ZnSO ₄) 60kg～80kg, enrich high-quality fertilizer 30000kg;

The fertilizing amount of the annual per hectare in high-yield field is: purity nitrogen (N) 550kg～600kg, phosphorus (P ₂o ₅) 240kg～300kg, potassium (K ₂o) 330kg～380kg, zinc sulphate (ZnSO ₄) 60kg～80kg, fertilizer 45000kg;

Described method comprises wheat planting method and corn planting method;

Described wheat planting method comprises the following steps:

1. wheat cultivation

Seed is selected: select that individual plant productivity is high, resistant to lodging, disease-resistant, the winter habit of strong stress resistance or semiwinterness kind; Under the condition of middle product field, should select the kind that rate of tillering panicle is high, stable yields is got bumper crops; Under the condition of high-yield field, select resistance to rich water, kind that yield potential is large; Described seed purity >=99.0% of selecting, moisture≤13.0%, germination rate >=85.0%, cleanliness >=99.0%;

Seed treatment: use seed coat agent dressing before sowing;

Whole ground: maize straw, and pulverizing evenly, rotary tillage, deep ploughing, subsoiling, rake the soil level, ridging, the plot of above rotary tillage in continuous 3 years, should deep plough or more than subsoiling 25cm, abolish tillage pan, rake leveling is ploughed in suppression after ploughing, and makes in topsoil soils Panasonic real; The plot of deep ploughing in nearest 3 years, can rotary tillage 2 times, tilling depth > 10cm;

Sowing: use sower to sow, the straw-returning plot of the moisture creating of not watering, after planting again with packer suppression 1～2 time; Described suitable sowing date is 3～October 12 October;

The computing formula of the seeding quantity of above-mentioned seeding process is:

$Q=\frac{N\×W}{1000\×1000\×\mathrm{Qr}\×\mathrm{Sr}}$

In formula:

Q: seeding quantity, unit is a kilogram per hectare (kg/hm2);

N: per hectare plan basic seedling amount;

W: thousand kernel weight, unit is gram (g);

Qr: germination rate (%);

Sr: emergence rate (%);

2. wheat fertilizing

Base fertilizer: base fertilizer applies in conjunction with seedbed preparation is disposable;

Middle product field by 25% and whole fertilizer of nitrogenous fertilizer, phosphate fertilizer 60%, potash fertilizer 55% make base fertilizer, high-yield field by 22% and whole fertilizer of nitrogenous fertilizer, phosphate fertilizer 60%, potash fertilizer 55% make base fertilizer;

Topdress: middle product field, middle fringe type and large-spike cultivar all in the phase of standing up to the jointing initial stage, in conjunction with the Nitrogen Top Dressing that waters 20%.High-yield field, the large-spike cultivar that rate of tillering panicle is low, jointing initial stage (1.5cm～2.0cm elevates above the soil between base portion first segment), in conjunction with 23% of the Nitrogen Top Dressing that waters; The middle fringe type kind that rate of tillering panicle is high, to mid-term, imposes 23% nitrogenous fertilizer at the jointing initial stage in conjunction with watering.

3. wheat is irrigated;

Described irrigation method is infiltrating irrigation, sprinkling irrigation or furrow irrigation;

Water winter water: in late November to early December, water winter water, daily mean temperature starts while being down to 3 ℃～5 ℃ to irrigate, irrigation quantity 600m ³/ hm ², when soil moisture content is suitable after winter irrigation, draw hoe;

Water jointing water: large-spike cultivar, before the shooting stage or the jointing initial stage water; Middle fringe type kind, jointing initial stage or connective phase in mid-term water; Irrigation quantity per hectare 600m ³～750m ³;

Later stage water management: wheat was chosen when the flag phase, soil moisture content was poor and watered, when soil moisture content is better, postpones to flowering stage and watering, and does not rewater later; As wheat choose the flag phase and flowering stage soil moisture content better, can postpone to Early filling stage and watering; Irrigation quantity 450m ³/ hm ²～600m ³/ hm ²;

4. wheat field management

Looking into seedling reseeds;

In good time intertillage: wheat tri-leaf period to jointing, whenever rainfall or water after, intertill 2～3 times, the wheatland that the total stem number of per hectare before the winter is greater than to 1,200 ten thousand, suppresses or deeply weeds and be completely cured, the described degree of depth 8-12cm that deeply weeds;

Freezing prevention: draw hoe early spring, the wheat initial stage of turning green imposes instant nitrogenousfertilizer and irrigates, and topdressing amount is purity nitrogen 120kg/hm ²～150kg/hm ², irrigation volume 300m ³/ hm ²～450m ³/ hm ²; There is chilling injury in wheat during jointing stage generation cold in the late spring or booting stage, imposes instant nitrogenousfertilizer and irrigate, and topdressing amount is purity nitrogen 120kg/hm ²～150kg/hm ², irrigation volume 300m ³/ hm ²～450m ³/ hm ²;

5. chemical weed control: the 3 leaf phases of wheat or turn green after carry out chemical weed control 1 time; Broad leaved weed can be prevented and treated with 40% carfentrazoneethyl dry suspending agent per hectare 60g～75g or 20% fluroxypyr missible oil per hectare 750ml～900m1; Grassy weed can prevent and treat with 3% mesosulfuron missible oil per hectare 375ml～450ml or 15% alkynes oxalic acid wetting powder per hectare 375g～450g; Broad leaved weed and grassy weed mix the available above medicament occurring and mix use;

6. the extermination of disease and insect pest:

Wheat Seedling: soil insect is with the chlopyrifos spraying of 40% phoxim emulsifiable concentrate or 20% or fill with root control; Be combined with Imidacloprid and red white mite extremely prevents and treats two spotted spider mite and aphid;

Turn green to the shooting stage: 5% jinggangmeisu aqua 8L～6L for per hectare, be watered 15L, spraying prevents and treats banded sclerotial blight and powdery mildew;

Bloom to the pustulation period: 70% thiophanate-methyl wetting powder, 10% Imidacloprid, 20% fenpropathrin milk oil and 0.2%～0.3% potassium dihydrogen phosphate are watered and are mixed, spray;

7. harvesting wheat

The harvesting of use combine, wheat straw farmland returning, stubble height≤15cm during results, crushed stalk length≤10cm, stalks cutting qualification rate >=90%, and evenly shed;

Described corn planting method comprises the following steps:

1. corn seeding

Seed is selected: select that high yield, resistance, plant type are compacter, the mid-early maturity breeding of resistance to dense planting, seed purity >=98% of selected seed, germination rate >=90%, cleanliness >=98%, water content≤13%;

Seed treatment: use seed coat agent dressing before sowing;

Sowing: described suitable sowing date is 5～June 20 June; Seeding quantity is 30kg/hm ²～50kg/hm ²; Planting density is 60000～75000 strains/hm ²; When described seeding method is no-tillage seeding, line-spacing is 60 ± 5cm; When described seeding method is stubble-cleaning sowing, line-spacing is 70cm～80cm or 30cm～50cm; Seed level 3cm～5cm; Seeding method is monoseeding.

2. corn fertilizing

Seed manure: using nitrogenous fertilizer 20% with phosphate fertilizer 40%, potash fertilizer 45%, 50% the applying as seed manure of sulfuric acid zinc fertilizer;

Topdress: impose in conjunction with shooting stage or interim plough of toy trumpet mouth, 35% of Nitrogen Top Dressing, described in topdress position at plant row side 10cm～15cm, fertile bandwidth 3cm～5cm, degree of depth 8cm～10cm, earthing after fertilising;

3. Corn Irrigation;

Described irrigation method is infiltrating irrigation, sprinkling irrigation or furrow irrigation;

Irrigation time: during field capacity≤55%,

4. corn field management

Seedling, final singling during 4～5 leaves,

Shooting stage or toy trumpet mouth phase, in conjunction with weeding and the intertillage in time 1 time of topdressing;

5. chemical weed control

During sowing, synchronously evenly spray 40% atrazine plus acetochlar 3.00L/hm ²～3.75L/hm ², or 33% pendimethalin missible oil 1.50L/hm ²or 72% isopropyl methoxalamine missible oil 1.20L/hm ²be watered 750L, on earth's surface, form one deck medicine film.After emerging, control, can spray 4% nicosulfuron suspending agent 1.50L/hm in corn seedling 3～5 leaves, 2～5 leaf phases of weeds ²be watered 750L, also can use steriland herbicide 20% paraquat 2.25L/hm in 7～8 leaf phases of corn ²～3.00L/hm ²being watered 750L directed spraying processes;

6. the extermination of disease and insect pest

Seedling stage: with 2000～3000 times of 5% Imidacloprid missible oil or 1000～1500 times of liquid spraying control small brown rice planthoppers of 40% dimethoate emulsifiable concentrate and thrips, synchronously prevent and treat rough dwarf disease viral disease; With 20% sumicidin missible oil or 1500～2000 times of control armyworms of 50% phoxim; Utilize the insects such as light or sweet and sour wine liquid trapping cutworm, mole cricket, also available 40% dimethoate emulsifiable concentrate, adds suitable quantity of water to stir the 50kg～70kg such as fragrant wheat bran, rice bran, soya-bean cake, millet, makes period poison bait.The fringe phase: toy trumpet mouth phase (9th～10 leaves launch), remove control of maize snout moth's larva in lobus cardiacus clump with 2.5% phoxim granule, every strain consumption 1g～2g; With 200 times of liquid of 10% " shuang xiao ling ", before and after tasseling stage, respectively spray 1 time control of maize stem rot.A flower grain phase: with 25% go out No. 3 suspending agents of young urea or 1000～1500 times of liquid spraying control armyworms of 50% phoxim emulsifiable concentrate, cotton bollworm, prevent eliminating aphis with 1000～1500 times of liquid of 40% dimethoate emulsion; With 1000～1500 times of liquid of 25% triadimefon wetting powder, or by 500～1000 times of liquid of 50% carbendazol wettable powder spraying control rusts, helminthosporium maydis, leaf blight etc.

7. harvest corn:

Straw-returning after harvest corn, described crushed stalk length≤10cm, chopping qualification rate >=90%, stubble height≤8cm;

After harvest corn completes, again carry out wheat planting, corn planting, the rest may be inferred.

Wherein, sower is wheat seed planter, wide secondary precision seeder or the sowing of half precision seeder, and described average row is apart from being 20cm～25cm, and sowing depth is 3cm～5cm.

The present invention is not limited to above-mentioned concrete embodiment, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion of having done, within all dropping on protection scope of the present invention.

Claims (3)

1. the water saving of winter wheat Summer Maize Rotation economizes a fertile method, it is characterized in that,

The fertilizing amount of the annual per hectare in middle product field is: purity nitrogen (N) 420kg～500kg, phosphorus (P ₂o ₅) 210kg～260kg, potassium (K ₂o) 300kg～350kg, zinc sulphate (ZnSO ₄) 60kg～80kg, enrich high-quality fertilizer 30000kg;

The fertilizing amount of the annual per hectare in high-yield field is: purity nitrogen (N) 550kg～600kg, phosphorus (P ₂o ₅) 240kg～300kg, potassium (K ₂o) 330kg～380kg, zinc sulphate (ZnSO ₄) 60kg～80kg, fertilizer 45000kg;

Described method comprises wheat planting method and corn planting method;

Described wheat planting method comprises the following steps:

1. wheat cultivation;

Seed is selected: select that individual plant productivity is high, resistant to lodging, disease-resistant, the winter habit of strong stress resistance or semiwinterness kind; Described seed purity >=99.0% of selecting, moisture≤13.0%, germination rate >=85.0%, cleanliness >=99.0%;

Seed treatment: use seed coat agent dressing before sowing;

Whole ground: maize straw, and pulverizing evenly, rotary tillage, deep ploughing, subsoiling, rake the soil level, ridging, the plot of above rotary tillage in continuous 3 years, should deep plough or more than subsoiling 25cm, abolish tillage pan, rake leveling is ploughed in suppression after ploughing, and makes in topsoil soils Panasonic real; The plot of deep ploughing in nearest 3 years, can rotary tillage 2 times, tilling depth > 10cm;

Sowing: use sower to sow, the straw-returning plot of the moisture creating of not watering, after planting again with packer suppression 1～2 time; Described suitable sowing date is 3～October 12 October;

The computing formula of the seeding quantity of above-mentioned seeding process is:

$Q=\frac{N\×W}{1000\×1000\×\mathrm{Qr}\×\mathrm{Sr}}$

In formula:

Q: seeding quantity, unit is a kilogram per hectare (kg/hm2);

N: per hectare plan basic seedling amount;

W: thousand kernel weight, unit is gram (g);

Qr: germination rate (%);

Sr: emergence rate (%);

2. wheat fertilizing;

Base fertilizer: base fertilizer applies in conjunction with seedbed preparation is disposable;

Middle product field by 25% and whole fertilizer of nitrogenous fertilizer, phosphate fertilizer 60%, potash fertilizer 55% make base fertilizer, high-yield field by 22% and whole fertilizer of nitrogenous fertilizer, phosphate fertilizer 60%, potash fertilizer 55% make base fertilizer;

Topdress: middle product field, middle fringe type and large-spike cultivar all in the phase of standing up to the jointing initial stage, in conjunction with 20% of the Nitrogen Top Dressing that waters, high-yield field, the large-spike cultivar that rate of tillering panicle is low, jointing initial stage (1.5cm～2.0cm elevates above the soil between base portion first segment), in conjunction with 23% of the Nitrogen Top Dressing that waters; The middle fringe type kind that rate of tillering panicle is high, to mid-term, imposes 23% nitrogenous fertilizer at the jointing initial stage in conjunction with watering;

3. wheat is irrigated;

Described irrigation method is infiltrating irrigation, sprinkling irrigation or furrow irrigation;

Water winter water: in late November to early December, water winter water, daily mean temperature starts while being down to 3 ℃～5 ℃ to irrigate, irrigation quantity 600m ³/ hm ², when soil moisture content is suitable after winter irrigation, draw hoe;

Water jointing water: large-spike cultivar, before the shooting stage or the jointing initial stage water; Middle fringe type kind, jointing initial stage or connective phase in mid-term water; Irrigation quantity per hectare 600m ³～750m ³;

Later stage water management: wheat was chosen when the flag phase, soil moisture content was poor and watered, when soil moisture content is better, postpones to flowering stage and watering, and does not rewater later; As wheat choose the flag phase and flowering stage soil moisture content better, can postpone to Early filling stage and watering; Irrigation quantity 450m ³/ hm ²～600m ³/ hm ²;

4. wheat field management;

Looking into seedling reseeds;

In good time intertillage: wheat tri-leaf period to jointing, whenever rainfall or water after, intertill 2～3 times, the wheatland that the total stem number of per hectare before the winter is greater than to 1,200 ten thousand, suppresses or deeply weeds and be completely cured, the described degree of depth 8-12cm that deeply weeds;

Freezing prevention: draw hoe early spring, the wheat initial stage of turning green imposes instant nitrogenousfertilizer and irrigates, and topdressing amount is purity nitrogen 120kg/hm ²～150kg/hm ², irrigation volume 300m ³/ hm ²～450m ³/ hm ²; There is chilling injury in wheat during jointing stage generation cold in the late spring or booting stage, imposes instant nitrogenousfertilizer and irrigate, and topdressing amount is purity nitrogen 120kg/hm ²～150kg/hm ², irrigation volume 300m ³/ hm ²～450m ³/ hm ²;

5. chemical weed control; The 3 leaf phases of wheat or turn green after carry out chemical weed control 1 time;

6. the extermination of disease and insect pest;

Wheat Seedling: soil insect is with the chlopyrifos spraying of 40% phoxim emulsifiable concentrate or 20% or fill with root control; Be combined with Imidacloprid and red white mite extremely prevents and treats two spotted spider mite and aphid;

Turn green to the shooting stage: 5% jinggangmeisu aqua 8L～6L for per hectare, be watered 15L, spraying prevents and treats banded sclerotial blight and powdery mildew;

Bloom to the pustulation period: 70% thiophanate-methyl wetting powder, 10% Imidacloprid, 20% fenpropathrin milk oil and 0.2%～0.3% potassium dihydrogen phosphate are watered and are mixed, spray;

7. harvesting wheat;

The harvesting of use combine, wheat straw farmland returning, stubble height≤15cm during results, crushed stalk length≤10cm, stalks cutting qualification rate >=90%, and evenly shed;

Described corn planting method comprises the following steps:

1. corn seeding;

Seed is selected: select that high yield, resistance, plant type are compacter, the mid-early maturity breeding of resistance to dense planting, seed purity >=98% of selected seed, germination rate >=90%, cleanliness >=98%, water content≤13%;

Seed treatment: use seed coat agent dressing before sowing;

Sowing: described suitable sowing date is 5～June 20 June; Seeding quantity is 30kg/hm ²～50kg/hm ²; Planting density is 60000～75000 strains/hm ²; When described seeding method is no-tillage seeding, line-spacing is 60 ± 5cm; When described seeding method is stubble-cleaning sowing, line-spacing is generally 70cm～80cm or 30cm～50cm; Seed level 3cm～5cm;

2. corn fertilizing;

Seed manure: using nitrogenous fertilizer 20% with phosphate fertilizer 40%, potash fertilizer 45%, 50% the applying as seed manure of sulfuric acid zinc fertilizer;

Topdress: impose in conjunction with shooting stage or interim plough of toy trumpet mouth, 35% of Nitrogen Top Dressing, described in topdress position at plant row side 10cm～15cm, fertile bandwidth 3cm～5cm, degree of depth 8cm～10cm, earthing after fertilising; 3. Corn Irrigation;

Described irrigation method is infiltrating irrigation, sprinkling irrigation or furrow irrigation;

Irrigation time: during field capacity≤55%,

4. corn field management;

Seedling, final singling during 4～5 leaves,

Shooting stage or toy trumpet mouth phase, in conjunction with weeding and the intertillage in time 1 time of topdressing;

5. chemical weed control;

During sowing, synchronously evenly spray 40% atrazine plus acetochlar 3.00L/hm ²～3.75L/hm ², or 33% pendimethalin missible oil 1.50L/hm ²or 72% isopropyl methoxalamine missible oil 1.20L/hm ²be watered 750L, form one deck medicine film on earth's surface, after emerging, control, can spray 4% nicosulfuron suspending agent 1.50L/hm in corn seedling 3～5 leaves, 2～5 leaf phases of weeds ²be watered 750L, also can use steriland herbicide 20% paraquat 2.25L/hm in 7～8 leaf phases of corn ²～3.00L/hm ²being watered 750L directed spraying processes;

6. the extermination of disease and insect pest;

7. harvest corn;

Straw-returning after harvest corn, described crushed stalk length≤10cm, chopping qualification rate >=90%, stubble height≤8cm;

After harvest corn completes, again carry out wheat planting, corn planting, the rest may be inferred.

2. a kind of winter wheat Summer Maize Rotation water saving according to claim 1 economizes fertile method, it is characterized in that, described sower is wheat seed planter, wide secondary precision seeder or the sowing of half precision seeder, and described average row is apart from being 20cm～25cm, and sowing depth is 3cm～5cm.

3. a kind of winter wheat Summer Maize Rotation water saving according to claim 1 economizes fertile method, it is characterized in that, in corn seeding step, seeding method adopts monoseeding.