CN1528122A - Dense soil paddy rice water-saving irrigation method - Google Patents
Dense soil paddy rice water-saving irrigation method Download PDFInfo
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- CN1528122A CN1528122A CNA2003101060730A CN200310106073A CN1528122A CN 1528122 A CN1528122 A CN 1528122A CN A2003101060730 A CNA2003101060730 A CN A2003101060730A CN 200310106073 A CN200310106073 A CN 200310106073A CN 1528122 A CN1528122 A CN 1528122A
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Abstract
The present invention discloses a compact soil paddy water-saving irrigation method for paddy field whose percolation ratio is 3mm/d, and is characterized by that said method includes the following steps: before irrigation and rice transplanting using pressure machine to compact the rice field to make the dried volume weight of soil be greater than 1.4g/cu.cm or make the relative density be greater than 0.4 or make number of blows of standard penetration be more than 15 times; and ploughing the compacted soil, and the depth of ploughing is not less than 15 cm; ponding ploughed rice field and making water tillage, then making irrigation and planting rice in described rice field according to conventional method.
Description
Technical field
The present invention relates to a kind of rice water-saving irrigation method, specifically a kind of closely knit soil paddy rice water-saving irrigation method.
Background technology
China is the most ancient country of rice cultivation in the world, and rice makes history 7000 approximately, is one of world's rice-cultivating area of origin.About 500,000,000 mu of the existing paddy rice cultivated areas of China account for 30% of cereal crops sowing area, are the staple food crops of China.Simultaneously, China also is a country that water resource extremely lacks, and gross amount of water resources is 2.8 hundred million sides.Only accounting for 5.6% of world's gross amount of water resources, is one of 13 poor-water states in the world.Agricultural water accounts for 88% of national total water amount at present, and the paddy rice water accounts for about 70% of agricultural water, therefore, the research rice water-saving is irrigated, improve the water production efficiency of irrigation water,, promote national economy to continue high-efficient development guaranteeing sustainable utilization of water resource, realize aspects such as social stability and progress, all have crucial meaning.Present water-saving irrigation research mainly concentrates in the research of the anti-seepage of channels and irrigation program, and the former is studied from the angle that how to reduce the water delivery loss, and the latter is studied from the irrigation method of paddy rice to reduce irrigation quantity.
Loss in the paddy rice water mainly is that the reason owing to two aspects causes, the one, and natural evaporation, the 2nd, seepage.The seepage in rice field be because of irrigate and rainfall after, the result that water layer or the soil water have surpassed the maximum moisture holding capacity in field is set up in the field, and is mainly relevant with rice field seepage action of ground water gradient with the quality of soil.China is vast in territory, the soil texture differs greatly, add the acting in conjunction of factors such as underground water, the percolation rate difference in rice field is also bigger, percolation rate is in 5～15mm/d (millimeter/sky) generally speaking, and few have 1.5mm/d, many Chao Guoed 20mm/d, leakage accounts for 30%～70% of paddy rice total water consumption, be main water consumption factor,, also just reached the purpose of water saving if therefore can reduce the leakage of paddy rice.
Summary of the invention
The objective of the invention is the principal element at the consumption of water in the Rice Production--seepage, a kind of new water-saving irrigation method is provided, reach and not only economize on water but also do not influence the purpose that crops produce.
Technical scheme of the present invention is:
A kind of closely knit soil paddy rice water-saving irrigation method uses in the paddy rice field of percolation rate greater than 3mm/d, it is characterized in that:
A, before irrigation and rice transplanting, closely knit dry density to soil is carried out greater than 1.4g/cm in the rice field with press
3(gram/cubic centimetre), or relative density is greater than 0.4, or standard is used to hammering number into test greater than 15 times;
B, closely knit soil is turned over, ploughing depth be no less than 15cm (centimetre), ploughing depth 20～25cm (centimetre) planting effect and economy are better between the scope;
C, soaked field water is carried out in the rice field of having turned over plough, in described rice field, irrigate according to a conventional method then, rice cultivation.
In order to guarantee closely knit effect, improve water-saving rate, available pressure machinery is to the closely knit operation in rice field 3～8 times, with guarantee dry density, relative density, standard is used to count these three indexs into the hammering of test has partly or entirely up to standard, reach best antiseep effect, turn over then, soaked field water ploughs, again with conventionally irrigate, the kind method for planting carries out the plantation of paddy rice.
Press comprises that punching press type road roller and vibrations roll the type road roller.Punching press type energy big (can reach 50kj (kilojoule)), influence dark (can reach underground 5m (rice)), therefore the effect of water saving is also better, it is little that vibrations roll the type energy, influence shallowly, generally can reach underground 0.7～1m, so water-saving result is less better, but it is big many that the engineering cost of punching press rolls than vibrations, how to select to determine according to the quality concrete analysis of economic capability and soil.
Beneficial effect of the present invention:
1, the present invention has opened up the approach of a new rice field water-saving irrigation, has once investment, and permanent advantage of being benefited under the situation that does not influence output and rice matter quality, can reduce leakage to greatest extent, reduces seepage 40%～70%.
2, have simplely, do not influence the normal production cycle, all can implement throughout the year.
3,, have excellent popularization and be worth applicable to the soil of various quality.
4, also can apply to the water-saving irrigation of the big crops of other water consumption, particularly the irrigation for the water-deficient area crops has very great strategic importance.
5, the availability of utilizing the protection water resource and improving water resource is arranged, the conserve water seed rice is planted cost.
6, being suitable in blocks, extensive farmland uses.
Embodiment
The present invention is further illustrated below in conjunction with embodiment.
The factor of leakage that influences soil is a lot, has the soil texture, landform height, river density, subterranean water level and the rice field depth of water etc. all multifactor, therefore, should select press and technology control parameter for use when implementing with suiting measures to local conditions, and its concrete steps are:
1. the field piece that will implement is carried out technical investigation and analytical evaluation, the percolation rate in rice field then can be used this technology during greater than 3mm/d; 2. before the soaked field, the soil physics performance is carried out experimental test, find out the optimum moisture content of soil compaction, and the actual measurement soil moisture content; 3. with road roller the rice field is rolled or punching press, can select 3～8 times according to the soil texture and former percolation rate, the sand loam soil pass that percolation rate is big generally speaking is more, and the clayed soil pass that percolation rate is little will lack, and the dry density that makes the soil after closely knit is greater than 1.4g/cm
3, relative density is greater than 0.4, or standard is used to get final product greater than 15 times into the hammering number of test; If it is all up to standard that dry density, relative density, the standard of the soil after closely knit are used to into several three indexs of the hammering of test, then water-saving result the best; 4. pressed the field of (closely knit) with plough deep ploughing, ploughing depth generally is no less than 15cm, 20～25cm (centimetre) planting effect and economy are better between the scope; 5. soaked field water is ploughed, and later on common rice cropping mode, comprises way commonly used in the paddy rice plantations such as rice transplanting, irrigation, maintenance.
Adopt method of the present invention can reduce the percolation rate in rice field greatly,, adopt method of the present invention percolation rate can be reduced to 6～11mm/d when the leakage in rice field during greater than 20mm/d (millimeter/sky); When the leakage in rice field during, adopt method of the present invention percolation rate can be reduced to 4～8mm/d at 10～20mm/d; When the leakage in rice field during, adopt method of the present invention percolation rate can be reduced to 2～5mm/d at 3～10mm/d; When the leakage in rice field during less than 3mm/d, ecological and economic benefit consideration then should not be adopted this technology for paddy rice.
Claims (4)
1, a kind of closely knit soil paddy rice water-saving irrigation method uses in the paddy rice field of percolation rate greater than 3mm/d, it is characterized in that:
A, before irrigation and rice transplanting, closely knit dry density to soil is carried out greater than 1.4g/cm in the rice field with press
3, or relative density is greater than 0.4, or standard is used to hammering number into test greater than 15 times;
B, closely knit soil is turned over, ploughing depth is no less than 15cm;
C, soaked field water is carried out in the rice field of having turned over plough, in described rice field, irrigate according to a conventional method then, rice cultivation.
2, closely knit soil paddy rice water-saving irrigation method according to claim 1, it is characterized in that with press turn over to after the closely knit operation in rice field 3～8 times, soaked field water ploughs.
3, closely knit soil paddy rice water-saving irrigation method according to claim 1 is characterized in that described press comprises that punching press type road roller and vibrations roll the type road roller.
4, closely knit soil paddy rice water-saving irrigation method according to claim 1 is characterized in that described ploughing depth is 20～25cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101060730A CN1212056C (en) | 2003-10-16 | 2003-10-16 | Dense soil paddy rice water-saving irrigation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101060730A CN1212056C (en) | 2003-10-16 | 2003-10-16 | Dense soil paddy rice water-saving irrigation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1528122A true CN1528122A (en) | 2004-09-15 |
| CN1212056C CN1212056C (en) | 2005-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101060730A Expired - Fee Related CN1212056C (en) | 2003-10-16 | 2003-10-16 | Dense soil paddy rice water-saving irrigation method |
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| CN (1) | CN1212056C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103109616A (en) * | 2013-03-11 | 2013-05-22 | 重庆地质矿产研究院 | Method for repairing water leakage of paddy field in secondary-stacking system coal mining subsidence ash and mudstone layer weathering area |
| CN104855195A (en) * | 2015-04-27 | 2015-08-26 | 扬州大学 | Rice water-saving irrigation method |
| CN104885838A (en) * | 2015-07-03 | 2015-09-09 | 巢湖市农业技术推广中心 | Field cultivation method of one-season medium indica hybrid rice |
| CN104920133A (en) * | 2015-07-03 | 2015-09-23 | 巢湖市农业技术推广中心 | Seedbed management method for one-season middle-season indica hybrid rice |
| CN105453968A (en) * | 2015-12-11 | 2016-04-06 | 安徽省中日农业环保科技有限公司 | Technology for planting paddy rice in arid area |
-
2003
- 2003-10-16 CN CNB2003101060730A patent/CN1212056C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103109616A (en) * | 2013-03-11 | 2013-05-22 | 重庆地质矿产研究院 | Method for repairing water leakage of paddy field in secondary-stacking system coal mining subsidence ash and mudstone layer weathering area |
| CN104855195A (en) * | 2015-04-27 | 2015-08-26 | 扬州大学 | Rice water-saving irrigation method |
| CN104885838A (en) * | 2015-07-03 | 2015-09-09 | 巢湖市农业技术推广中心 | Field cultivation method of one-season medium indica hybrid rice |
| CN104920133A (en) * | 2015-07-03 | 2015-09-23 | 巢湖市农业技术推广中心 | Seedbed management method for one-season middle-season indica hybrid rice |
| CN105453968A (en) * | 2015-12-11 | 2016-04-06 | 安徽省中日农业环保科技有限公司 | Technology for planting paddy rice in arid area |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1212056C (en) | 2005-07-27 |
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Granted publication date: 20050727 Termination date: 20111016 |