CN102918971A - Ridging sowing method for improving corn yield of saline-alkali soils - Google Patents
Ridging sowing method for improving corn yield of saline-alkali soils Download PDFInfo
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Abstract
The invention provides a ridging sowing method for improving corn yield of saline-alkali soils, relates to a sowing method for saline-alkali soil corn and aims to solve the technical problem of low corn yield of the conventional saline-alkali soil corn sowing methods. The method comprises the following steps of (1) performing deep plowing ridging; (2) applying improver; (3) applying base fertilizer; (4) ridging; and (5) sowing. The method has the advantages that 1, ardealite used as an improver is applied to the bottom of the plowed layer and can effectively displace sodium ions in the plowed layer soil and flow below the plowed layer along with irrigation, so the accumulation of sodium ions in the soil on the plowed layer along the evaporation of water after irrigation is performed is avoided, and the salt-leaching effect of the irrigation is enhanced; and simultaneously, by the application of organic fertilizer, the content of organic matters in the soil is increased, the fertile plowed layer is cultured, and the fertilizer retention and the water retention of the soil are improved; and 2, the method is high in operability, easy to implement, less in consumption of the improver and low in cost and has quick effect and obvious yield-increasing effect of corn.
Description
Technical field
The invention belongs to field of plant growing technology, be specifically related to the type of seeding of a kind of saline land corn.
Background technology
Corn (Zea mays L.) is China the Northeast Main Cultivation crop, and cultivated area accounts for 30% of national maize sown area.Western part, the Northeast is the areal concentration of China's Saline-Sodic soil, and the salinization of soil arable area reaches 1,920 ten thousand mu, accounts for 6.8% of whole district total cultivated area, mostly is middle low yield dry land, 400 kilograms of the average annual per mu yield less thaies of corn.The salinization of soil, fertility level is low to be the key factor that this district's corn yield is difficult to improve.This district's arable soil salinity is take carbonate as main, the exchangeable sodium ion concentration is high, and pH is many between 7.5 ~ 8.5, is alkalescent, fertilising is mainly chemical fertilizer in traditional corn planting, because the soil fertilizer poor water retention property, fertilizer efficiency period is shorter, and fertilizer utilization efficiency is low, surface water evaporates in a large number after irrigating in addition, cause that the soil salt submeter is poly-, cause Maize Roots suppressed, the shortcoming such as yield level is low.Existing saline land corn planting method exists corn yield low, and average annual per mu yield only is 350 ~ 400 kilograms.
Summary of the invention
The objective of the invention is to solve existing saline land corn planting method and have the low technical problem of corn yield, and a kind of bedder-planter method that improves the saline land corn yield is provided.
A kind of bedder-planter method that improves the saline land corn yield, specifically finish according to the following steps: one, deep ploughing ridging: at the ridging of deep ploughing on 25 ~ April 30 April, furrow is 20cm ~ 25cm deeply, and furrow is wide to be 15cm ~ 20cm; Two, execute modifying agent: deep ploughing is evenly spread fertilizer over the fields ardealite in furrow as modifying agent behind the ridging, and the ardealite amount of spreading fertilizer over the fields is 40 kg/acres ~ 80 kg/acres, earthing then, and thickness of earth covering is 3cm ~ 5cm; Three, apply fertilizer to the subsoil: at first will evenly be spread fertilizer over the fields by the mixing base fertilizer that ordinary maize base fertilizer and organic commercial fertilizer are mixed to get on the overburden layer that step 2 obtains, ordinary maize base fertilizer amount of application is 30 kg/acres ~ 40 kg/acres in the described mixing base fertilizer, and the organic commercial fertilizer amount of application is 30 kg/acres ~ 50 kg/acres in the described mixing base fertilizer; Four, ridging: after applying fertilizer to the subsoil former ridge platform broken from the centre in former furrow position and set up new ridge, then ridge platform distance from top base fertilizer 10cm ~ 15cm adopts roller with ridge platform compacting, namely set up the ridge high for 15cm ~ 20cm and row spacing be the new ridge of 65cm ~ 70cm; Five, sowing: take spacing in the rows as 30cm ~ 35cm, sowing depth is as 3cm ~ 5cm and 1 ~ 2 seeding corn seed of every hole, after planting carries out earthing, thickness of earth covering is 3cm ~ 5cm, then adopts the roller spreading 1 ~ 2 time, finishes the sowing of corn.
Advantage of the present invention: one, the present invention executes ardealite as modifying agent in the topsoil bottom, effectively replace the topsoil soils sodium ion, and drench to topsoil with irrigation, build up in topsoil with the moisture evaporation after having avoided the soil sodium ion to irrigate, strengthened the desalinization of soil by flooding or leaching effect of irrigating; Application of organic fertilizers can increase soil organic matter content simultaneously, cultivates fertile topsoil, has strengthened the fertilizer conservation moisture capacity of soil; Two, the present invention is workable, and is simple and easy to do, has a modifying agent consumption few, and cost is low, instant effect, corn yield increasing successful; Three, the present invention adopts the co-administered method of ardealite, organic commercial fertilizer and chemical fertilizer, make 0.3 unit of soil pH decline, the exchangeable sodium ion concentration reduces by 15% ~ 23.5%, soil available phosphorus content improves 57%, and corn yield improves 36.8% ~ 38.9%, has the reduction soil salt, promote soil fertility, improvement and fertilizing soil promote corn growth, improve the effect of output; Therefore, have a extensive future, have progressively improvement and fertilizing soil, promote the middle-and-low-yielding fields soil fertility, improve grain yield, realize the significance of the sustainable farming in salinization of soil farmland.
Description of drawings
Fig. 1 is the ridge shape schematic diagram of embodiment one, A among the figure is the ridge shape schematic diagram that embodiment one step 1 obtains, B among the figure is the ridge shape schematic diagram that embodiment one step 4 obtains, a among the figure is the ardealite layer, b among the figure is overburden layer, c among the figure is the base fertilizer layer, and the d among the figure is soil horizon, and the e among the figure is seeding layer; Fig. 2 is that test one is to the corn yield histogram of test four.
Embodiment
Embodiment one: present embodiment is a kind of bedder-planter method that improves the saline land corn yield, specifically finish according to the following steps: one, deep ploughing ridging: at the ridging of deep ploughing on 25 ~ April 30 April, furrow is 20cm ~ 25cm deeply, and furrow is wide to be 15cm ~ 20cm; Two, execute modifying agent: deep ploughing is evenly spread fertilizer over the fields ardealite in furrow as modifying agent behind the ridging, and the ardealite amount of spreading fertilizer over the fields is 40 kg/acres ~ 80 kg/acres, earthing then, and thickness of earth covering is 3cm ~ 5cm; Three, apply fertilizer to the subsoil: at first will evenly be spread fertilizer over the fields by the mixing base fertilizer that ordinary maize base fertilizer and organic commercial fertilizer are mixed to get on the overburden layer that step 2 obtains, ordinary maize base fertilizer amount of application is 30 kg/acres ~ 40 kg/acres in the described mixing base fertilizer, and the organic commercial fertilizer amount of application is 30 kg/acres ~ 50 kg/acres in the described mixing base fertilizer; Four, ridging: after applying fertilizer to the subsoil former ridge platform broken from the centre in former furrow position and set up new ridge, then ridge platform distance from top base fertilizer 10cm～15cm adopts roller with ridge platform compacting, namely set up the ridge high for 15cm ~ 20cm and row spacing be the new ridge of 65cm ~ 70cm; Five, sowing: take spacing in the rows as 30cm ~ 35cm, sowing depth is as 3cm ~ 5cm and 1 ~ 2 seeding corn seed of every hole, after planting carries out earthing, thickness of earth covering is 3cm ~ 5cm, then adopts the roller spreading 1 ~ 2 time, finishes the sowing of corn.
The ridge shape schematic diagram of present embodiment as shown in Figure 1, A among the figure is the ridge shape schematic diagram that the present embodiment step 1 obtains, B among the figure is the ridge shape schematic diagram that the present embodiment step 4 obtains, a among the figure is the ardealite layer, b among the figure is overburden layer, c among the figure is the base fertilizer layer, and the d among the figure is soil horizon, and the e among the figure is seeding layer.
The content of organic matter 〉=45% in the described organic commercial fertilizer of present embodiment, N, P
2O
5And K
2O total content 〉=10%.
Present embodiment is executed ardealite as modifying agent in the topsoil bottom, effectively replaces the topsoil soils sodium ion, and drenches to topsoil with irrigation, has avoided the soil sodium ion to irrigate rear the evaporation with moisture and has built up in topsoil, has strengthened the desalinization of soil by flooding or leaching effect of irrigating; Application of organic fertilizers can increase soil organic matter content simultaneously, cultivates fertile topsoil, has strengthened the fertilizer conservation moisture capacity of soil.
Present embodiment is workable, and is simple and easy to do, has a modifying agent consumption few, and cost is low, instant effect, corn yield increasing successful.
Present embodiment adopts ardealite, organic commercial fertilizer and the co-administered method of chemical fertilizer, make 0.3 unit of soil pH decline, the exchangeable sodium ion concentration reduces by 15% ~ 23.5%, soil available phosphorus content improves 57%, and corn yield improves 36.8% ~ 38.9%, has the reduction soil salt, promote soil fertility, improvement and fertilizing soil promote corn growth, improve the effect of output; Therefore, have a extensive future, have progressively improvement and fertilizing soil, promote the middle-and-low-yielding fields soil fertility, improve grain yield, realize the significance of the sustainable farming in salinization of soil farmland.
Embodiment two: the difference of present embodiment and embodiment one is: the ordinary maize base fertilizer described in the step 3 is special compound fertilizer for corns or the Chemical Mixed Fertilizer that mixed by urea, diammonium phosphate and potassium sulphate; If when adopting special compound fertilizer for corns to use as ordinary maize base fertilizer, the special compound fertilizer for corns amount of application is 30 kg/acres ~ 40 kg/acres; When if the Chemical Mixed Fertilizer that adopts urea, diammonium phosphate and potassium sulphate to mix uses as ordinary maize base fertilizer, the urea amount of application is 10 kg/acres ~ 15 kg/acres in the described Chemical Mixed Fertilizer, the diammonium phosphate amount of application is 8 kg/acres ~ 10 kg/acres in the described Chemical Mixed Fertilizer, and the potassium sulphate amount of application is 6 kg/acres ~ 8 kg/acres in the described Chemical Mixed Fertilizer.Other are identical with embodiment one.
Present embodiment is described with N, P in the special compound fertilizer for corns
2O
5And K
2The O total content is greater than 45%.
Adopt following verification experimental verification effect of the present invention
Test one: a kind of bedder-planter method that improves the saline land corn yield, specifically finish according to the following steps: one, deep ploughing ridging: at the ridging of deep ploughing on April 25, furrow dark (being that the ridge is high) is 20cm ~ 25cm, and furrow is wide to be 15cm ~ 20cm; Two, apply fertilizer to the subsoil: special compound fertilizer for corns is evenly spread fertilizer over the fields in furrow as base fertilizer, and the special compound fertilizer for corns amount of application is 30 kg/acres; Three, ridging: after applying fertilizer to the subsoil, former ridge platform broken from the centre in former furrow position and set up new ridge, ridge platform distance from top base fertilizer 10cm ~ 15cm, then adopt roller with ridge platform compacting, namely setting up ridge high (being that furrow is dark) is that 15cm ~ 20cm and row spacing are the new ridge of 65cm ~ 70cm; Four, sowing: take spacing in the rows as 30cm ~ 35cm, sowing depth is as 3cm ~ 5cm and 1 ~ 2 seeding corn seed of every hole, after planting carries out earthing, thickness of earth covering is 3cm ~ 5cm, then adopts the roller spreading 2 times, finishes the sowing of corn.
Special compound fertilizer for corns described in this test procedure two is Sa Kefu Nitrogen, Phosphorus and Potassium 18-18-18.
Test two: a kind of bedder-planter method that improves the saline land corn yield, specifically finish according to the following steps: one, deep ploughing ridging: at the ridging of deep ploughing on 25 ~ April 30 April, furrow dark (being that the ridge is high) is 20cm ~ 25cm, and furrow is wide to be 15cm ~ 20cm; Two, execute modifying agent: deep ploughing is evenly spread fertilizer over the fields ardealite in furrow as modifying agent behind the ridging, and the ardealite amount of spreading fertilizer over the fields is 50 kg/acres, earthing then, and thickness of earth covering is 3cm ~ 5cm; Three, apply fertilizer to the subsoil: special compound fertilizer for corns is evenly spread fertilizer over the fields in furrow as base fertilizer, and the special compound fertilizer for corns amount of application is 30 kg/acres; Four, ridging: after applying fertilizer to the subsoil, former ridge platform broken from the centre in former furrow position and set up new ridge, ridge platform distance from top base fertilizer 10cm ~ 15cm, then adopt roller with ridge platform compacting, namely setting up ridge high (being that furrow is dark) is that 15cm ~ 20cm and row spacing are the new ridge of 65cm ~ 70cm; Five, sowing: take spacing in the rows as 30cm ~ 35cm, sowing depth is as 3cm ~ 5cm and 1 ~ 2 seeding corn seed of every hole, after planting carries out earthing, thickness of earth covering is 3cm ~ 5cm, then adopts the roller spreading 2 times, finishes the sowing of corn.
Ardealite described in this test procedure two is the special fertile limited company in the West, Liaoning.
Special compound fertilizer for corns described in this test procedure three is Sa Kefu Nitrogen, Phosphorus and Potassium 18-18-18.
Test three: a kind of bedder-planter method that improves the saline land corn yield, specifically finish according to the following steps: one, deep ploughing ridging: at the ridging of deep ploughing on 25 ~ April 30 April, furrow dark (being that the ridge is high) is 20cm ~ 25cm, and furrow is wide to be 15cm ~ 20cm; Two, apply fertilizer to the subsoil: at first will evenly be spread fertilizer over the fields by the mixing base fertilizer that special compound fertilizer for corns and organic commercial fertilizer are mixed to get on the overburden layer that step 2 obtains, the special compound fertilizer for corns amount of application is 30 kg/acres in the described mixing base fertilizer, and the organic commercial fertilizer amount of application is 40 kg/acres in the described mixing base fertilizer; Three, ridging: after applying fertilizer to the subsoil, former ridge platform broken from the centre in former furrow position and set up new ridge, ridge platform distance from top base fertilizer 10cm ~ 15cm, then adopt roller with ridge platform compacting, namely setting up ridge high (being that furrow is dark) is that 15cm ~ 20cm and row spacing are the new ridge of 65cm ~ 70cm; Four, sowing: take spacing in the rows as 30cm ~ 35cm, sowing depth is as 3cm ~ 5cm and 1 ~ 2 seeding corn seed of every hole, after planting carries out earthing, thickness of earth covering is 3cm ~ 5cm, then adopts the roller spreading 2 times, finishes the sowing of corn.
Special compound fertilizer for corns described in this test procedure three is Sa Kefu Nitrogen, Phosphorus and Potassium 18-18-18.
Organic commercial fertilizer described in this test procedure three is the Taiwan red granular fertilizer of flavor that red group produces of distinguishing the flavor of, the content of organic matter 〉=45% in the red granular fertilizer of distinguishing the flavor of.
Test four: a kind of bedder-planter method that improves the saline land corn yield, specifically finish according to the following steps: one, deep ploughing ridging: at the ridging of deep ploughing on 25 ~ April 30 April, furrow dark (being that the ridge is high) is 20cm ~ 25cm, and furrow is wide to be 15cm ~ 20cm; Two, execute modifying agent: deep ploughing is evenly spread fertilizer over the fields ardealite in furrow as modifying agent behind the ridging, and the ardealite amount of spreading fertilizer over the fields is 50 kg/acres, earthing then, and thickness of earth covering is 3cm ~ 5cm; Three, apply fertilizer to the subsoil: at first will evenly be spread fertilizer over the fields by the mixing base fertilizer that special compound fertilizer for corns and organic commercial fertilizer are mixed to get on the overburden layer that step 2 obtains, the special compound fertilizer for corns amount of application is 30 kg/acres in the described mixing base fertilizer, and the organic commercial fertilizer amount of application is 40 kg/acres in the described mixing base fertilizer; Four, ridging: after applying fertilizer to the subsoil, former ridge platform broken from the centre in former furrow position and set up new ridge, ridge platform distance from top base fertilizer 10cm ~ 15cm, then adopt roller with ridge platform compacting, namely setting up ridge high (being that furrow is dark) is that 15cm ~ 20cm and row spacing are the new ridge of 65cm ~ 70cm; Five, sowing: take spacing in the rows as 30cm ~ 35cm, sowing depth is as 3cm ~ 5cm and 1 ~ 2 seeding corn seed of every hole, after planting carries out earthing, thickness of earth covering is 3cm ~ 5cm, then adopts the roller spreading 2 times, finishes the sowing of corn.
Ardealite described in this test procedure two is the special fertile limited company in the West, Liaoning.
Special compound fertilizer for corns described in this test procedure three is Sa Kefu Nitrogen, Phosphorus and Potassium 18-18-18.
Organic commercial fertilizer described in this test procedure three is the Taiwan red granular fertilizer of flavor that red group produces of distinguishing the flavor of, the content of organic matter 〉=45% in the red granular fertilizer of distinguishing the flavor of.
Test one to four be 2010 in the Daan City, Jilin Province the happy chief of township of victory Hong Cun salinized soil carries out the corn fertilizing test, the Daan City, Jilin Province is happy, and to win chief of township Hong Cun soil physico-chemical property as follows: soil types is that slight saline-alkali soil, pH are 7.86, electrical conductivity is that 0.57mS/cm, cation exchange capacity are 23.75cmol/Kg, exchangeability Na
+Ion is that 0.493cmol/Kg, alkali-hydrolyzable nitrogen are that 82.4mg/kg, rapid available phosphorus are that 14.9mg/kg and available potassium are 92.5mg/kg.
The corn yield of record test one to four, as shown in Figure 1, Fig. 1 tests one to four corn yield histogram, tests the contrast of one to four corn yield as can be known by Fig. 1, and the corn yield of test four is the highest, compares volume increase 36.8%, obvious effect of increasing production with test one.
Test five: a kind of bedder-planter method that improves the saline land corn yield, specifically finish according to the following steps: one, deep ploughing ridging: at the ridging of deep ploughing on April 25, furrow dark (being that the ridge is high) is 20cm ~ 25cm, and furrow is wide to be 15cm ~ 20cm; Two, apply fertilizer to the subsoil: special compound fertilizer for corns is evenly spread fertilizer over the fields in furrow as base fertilizer, and the special compound fertilizer for corns amount of application is 30 kg/acres; Three, ridging: after applying fertilizer to the subsoil, former ridge platform broken from the centre in former furrow position and set up new ridge, ridge platform distance from top base fertilizer 10cm ~ 15cm, then adopt roller with ridge platform compacting, namely ridge high (being that furrow is dark) is that 15cm ~ 20cm and row spacing are the new ridge of 65cm ~ 70cm; Four, sowing: take spacing in the rows as 30cm ~ 35cm, sowing depth is as 3cm ~ 5cm and 1 ~ 2 seeding corn seed of every hole, after planting carries out earthing, thickness of earth covering is 3cm ~ 5cm, then adopts the roller spreading 2 times.
Special compound fertilizer for corns described in this test procedure three is Sa Kefu Nitrogen, Phosphorus and Potassium 18-18-18.
Test six: a kind of bedder-planter method that improves the saline land corn yield, specifically finish according to the following steps: one, deep ploughing ridging: at the ridging of deep ploughing on 25 ~ April 30 April, furrow dark (being that the ridge is high) is 20cm ~ 25cm, and furrow is wide to be 15cm ~ 20cm; Two, execute modifying agent: deep ploughing is evenly spread fertilizer over the fields ardealite in furrow as modifying agent behind the ridging, and the ardealite amount of spreading fertilizer over the fields is 50 kg/acres, earthing then, and thickness of earth covering is 3cm ~ 5cm; Three, apply fertilizer to the subsoil: at first will evenly be spread fertilizer over the fields by the mixing base fertilizer that special compound fertilizer for corns and organic commercial fertilizer are mixed to get on the overburden layer that step 2 obtains, the special compound fertilizer for corns amount of application is 30 kg/acres in the described mixing base fertilizer, and the organic commercial fertilizer amount of application is 40 kg/acres in the described mixing base fertilizer; Four, ridging: new ridge is set up in the furrow position after applying fertilizer to the subsoil, former ridge platform broken from the centre in former furrow position set up new ridge, ridge platform distance from top base fertilizer 10cm ~ 15cm, then adopt roller with ridge platform compacting, namely ridge high (being that furrow is dark) is that 15cm ~ 20cm and row spacing are the new ridge of 65cm ~ 70cm; Five, sowing: take spacing in the rows as 30cm ~ 35cm, sowing depth is as 3cm ~ 5cm and 1 ~ 2 seeding corn seed of every hole, after planting carries out earthing, thickness of earth covering is 3cm ~ 5cm, then adopts the roller spreading 2 times.
Ardealite described in this test procedure two is the special fertile limited company in the West, Liaoning.
Special compound fertilizer for corns described in this test procedure three is Sa Kefu Nitrogen, Phosphorus and Potassium 18-18-18.
Organic commercial fertilizer described in this test procedure three is the Taiwan red granular fertilizer of flavor that red group produces of distinguishing the flavor of, the content of organic matter 〉=45% in the red granular fertilizer of distinguishing the flavor of.
Test five to six be 2011 in the Daan City, Jilin Province the happy chief of township of victory Hong Cun salinized soil carries out the corn fertilizing test, the Daan City, Jilin Province is happy, and to win chief of township Hong Cun soil physico-chemical property as follows: soil types is that slight saline-alkali soil, pH are 7.86, electrical conductivity is that 0.57mS/cm, cation exchange capacity are 23.75cmol/Kg, exchangeability Na
+Ion is that 0.493cmol/Kg, alkali-hydrolyzable nitrogen are that 82.4mg/kg, rapid available phosphorus are that 14.9mg/kg and available potassium are 92.5mg/kg.
The corn yield of test five is 6525 kilograms/hectare, and the corn yield of test six is 9063 kilograms/hectare, and the corn yield of test six improves 38.9%, obvious effect of increasing production than the corn yield of test five.
Detect test six plot soil physico-chemical properties, test as can be known 0.3 unit of six plot topsoil soils pH decline by detecting, topsoil soils exchangeable sodium ion concentration has reduced 23.5%, and content of soil available phosphor increases by 57.0%, and soil melioration and soil fertilities are fairly obvious.
Claims (2)
1. bedder-planter method that improves the saline land corn yield, it is characterized in that the bedder-planter method that improves the saline land corn yield finishes according to the following steps: one, deep ploughing ridging: at the ridging of deep ploughing on 25 ~ April 30 April, furrow is 20cm ~ 25cm deeply, and furrow is wide to be 15cm ~ 20cm; Two, execute modifying agent: deep ploughing is evenly spread fertilizer over the fields ardealite in furrow as modifying agent behind the ridging, and the ardealite amount of spreading fertilizer over the fields is 40 kg/acres ~ 80 kg/acres, earthing then, and thickness of earth covering is 3cm ~ 5cm; Three, apply fertilizer to the subsoil: at first will evenly be spread fertilizer over the fields by the mixing base fertilizer that ordinary maize base fertilizer and organic commercial fertilizer are mixed to get on the overburden layer that step 2 obtains, ordinary maize base fertilizer amount of application is 30 kg/acres ~ 40 kg/acres in the described mixing base fertilizer, and the organic commercial fertilizer amount of application is 30 kg/acres ~ 50 kg/acres in the described mixing base fertilizer; Four, ridging: after applying fertilizer to the subsoil former ridge platform broken from the centre in former furrow position and set up new ridge, then ridge platform distance from top base fertilizer 10cm ~ 15cm adopts roller with ridge platform compacting, namely set up the ridge high for 15cm ~ 20cm and row spacing be the new ridge of 65cm ~ 70cm; Five, sowing: take spacing in the rows as 30cm ~ 35cm, sowing depth is as 3cm ~ 5cm and 1 ~ 2 seeding corn seed of every hole, after planting carries out earthing, thickness of earth covering is 3cm ~ 5cm, then adopts the roller spreading 1 ~ 2 time, finishes the sowing of corn.
2. a kind of implantation methods that improves the saline land corn yield according to claim 1 is characterized in that the ordinary maize base fertilizer described in the step 3 is special compound fertilizer for corns or the Chemical Mixed Fertilizer that mixed by urea, diammonium phosphate and potassium sulphate; If when adopting special compound fertilizer for corns to use as ordinary maize base fertilizer, the special compound fertilizer for corns amount of application is 30 kg/acres ~ 40 kg/acres; When if the Chemical Mixed Fertilizer that adopts urea, diammonium phosphate and potassium sulphate to mix uses as ordinary maize base fertilizer, the urea amount of application is 10 kg/acres ~ 15 kg/acres in the described Chemical Mixed Fertilizer, the diammonium phosphate amount of application is 8 kg/acres ~ 10 kg/acres in the described Chemical Mixed Fertilizer, and the potassium sulphate amount of application is 6 kg/acres ~ 8 kg/acres in the described Chemical Mixed Fertilizer.
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| CN105660111A (en) * | 2016-01-16 | 2016-06-15 | 中国科学院东北地理与农业生态研究所 | High-yield cultivating method for corn in dry-farming area of northern cold region |
| CN106305040A (en) * | 2016-08-09 | 2017-01-11 | 金少平 | Method for planting corns in saline and alkaline land in yellow river basin |
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| CN112493068A (en) * | 2020-11-04 | 2021-03-16 | 山东省农业科学院玉米研究所（山东省农业科学院玉米工程技术研究中心） | Corn planting method for realizing weight-reducing and efficiency-increasing effects |
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| CN115259920A (en) * | 2022-08-30 | 2022-11-01 | 中国科学院东北地理与农业生态研究所 | Method for improving white serous soil by using biochar-based slow-release fertilizer |
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