CN104871792A - Rod bank for testing plant root growth penetrating power - Google Patents

Rod bank for testing plant root growth penetrating power Download PDF

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Publication number
CN104871792A
CN104871792A CN201510319264.8A CN201510319264A CN104871792A CN 104871792 A CN104871792 A CN 104871792A CN 201510319264 A CN201510319264 A CN 201510319264A CN 104871792 A CN104871792 A CN 104871792A
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CN
China
Prior art keywords
layer
rod
soil
shell
soil layer
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Pending
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CN201510319264.8A
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Chinese (zh)
Inventor
龚振平
闫超
董守坤
马春梅
曹立为
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Northeast Agricultural University
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Northeast Agricultural University
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Priority to CN201510319264.8A priority Critical patent/CN104871792A/en
Publication of CN104871792A publication Critical patent/CN104871792A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G2/00—Vegetative propagation

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  • Life Sciences & Earth Sciences (AREA)
  • Botany (AREA)
  • Environmental Sciences (AREA)
  • Developmental Biology & Embryology (AREA)
  • Cultivation Of Plants (AREA)

Abstract

The invention provides a rod bank for testing plant root growth penetrating power and belongs to agricultural scientific research instruments. The rod bank comprises a standard reference rod and a contrast experiment rod and is structurally characterized in that a lower cylinder is coaxially mounted at the lower side part of an upper cylinder through a fixing clamp; a seedbed compaction soil layer and a soil covering layer are sequentially arranged in the upper cylinder from bottom to top, and a river sand layer is arranged in the lower cylinder; a gauze element is arranged between the seedbed compaction soil layer and the river sand layer; the soil bulk densities of the seedbed compaction soil layer in the standard reference rod and the contrast experiment rod are 1.10-1.20 g/cm<3> and 1.45-1.55 g/cm<3> respectively. The structure of the rod bank is simple, the manufacturing cost is low, test operation is simple and convenient, test data are accurate, the application range is wide, and a technical support is provided for basis research of crop seed root growth penetrating power.

Description

Plant root growth penetration capacity measures excellent group
Technical field
The invention belongs to agri-scientific research instrument, relates generally to a kind ofly to measure the equipment penetrating soil capacity in agricultural plant Root-development.
Background technology
The change of soil density to the growing of crop root, absorb nutrition and moisture has an impact, the increase along with the degree of packing on the one hand, contact between root system and soil is more tight, makes more nutrient and moisture enter root system, the ability of single absorption is got a promotion; Then that the mechanical resistance of unit weight and soil can affect the stretching, extension of root system along with the increase of the bulk density of soil can reduce the quantity of root system but then, thus restriction and destroy the growth of root system, root weight is reduced, reduces the absorption total amount to nutrient and water.Especially the popularization of Minimal and zero tillage technology in recent years and large-area applications make the agricultural land soil degree of packing more and more large, and soil compaction phenomenon is aggravated, and the ability that crop root penetrates compacted soil is more and more tested.According to the different soils degree of packing, the crop varieties of the different root system penetration capacity of seed selection becomes more important to adapt to current agricultural production.Therefore, extremely urgent to the basic research of plant variety root growth penetration capacity.
Summary of the invention
The object of the invention is exactly for above-mentioned prior art Problems existing, in conjunction with the actual demand of agricultural production operation, research and develop a kind of plant root growth penetration capacity and measure excellent group, reach different agricultural crops root growth ability Accurate Determining, to meet and to adapt to agricultural production operation needs, realize scientic planting, ensure the object of crop yield.
The object of the invention is achieved in that described plant root growth penetration capacity measures excellent group and comprises standard base rod and contrast experiment's rod, the structure of described standard base rod and contrast experiment's rod is: on upper shell following side, install lower shell by fixing card, by linking into an integrated entity of upper shell and lower shell concentric, the diameter of bore size Φ of described upper and lower cylindrical shell is 20-50cm, the height dimension H of described upper shell 1for 15cm, the height dimension H of lower shell 2for 30cm; Kind of bed compacting soil layer and overburden layer is equipped with successively from bottom to up, the gauge H of described overburden layer in described upper shell inside 4for 3cm, the gauge H of described kind bed compacting soil layer 5for 10cm, the height distance size H of distance upper shell upper surface, overburden layer upper surface 3for 2cm; At equipped river, described lower shell inside layer of sand, the gauge of described river layer of sand and the height dimension H of lower shell 2equal, between described kind bed compacting soil layer bottom and layer of sand top, river, position is equipped with gauze, and the bulk density of soil of the kind bed compacting soil layer in described standard base rod is 1.10-1.20g/cm 3, the bulk density of soil of the kind bed compacting soil layer in described contrast experiment's rod is 1.45-1.55g/cm 3.
The invention structure is simple, cheap for manufacturing cost, measurement operation simple and convenient, and determination data is accurate, applied widely, for agronomic technique fundamental research provides technical support, achieves scientific farming, ensures the object of agricultural year.
Accompanying drawing explanation
Fig. 1 is plant root growth penetration capacity measuring stick group structural representation.
In figure, piece number illustrates:
1, upper shell, 2, fixing card, 3, gauze, 4, lower shell, 5, overburden layer, 6, plant bed compacting soil layer, 7, river layer of sand.
Embodiment
Below in conjunction with accompanying drawing, the invention embodiment is described in detail.A kind of plant root growth penetration capacity measures excellent group, described plant root growth penetration capacity measures excellent group and comprises standard base rod and contrast experiment's rod, the structure of described standard base rod and contrast experiment's rod is: on upper shell 1 following side, install lower shell 4 by fixing card 2, by linking into an integrated entity of upper shell 1 and lower shell 4 concentric, the diameter of bore size Φ of described upper and lower cylindrical shell 1,4 is 20-50cm, the height dimension H of described upper shell 1 1for 15cm, the height dimension H of lower shell 4 2for 30cm; Kind of bed compacting soil layer 6 and an overburden layer 5 is equipped with from bottom to up successively, the gauge H of described overburden layer 5 in described upper shell 1 inside 4for 3cm, the gauge H of described kind bed compacting soil layer 6 5for 10cm, the height distance size H of distance upper shell 1 upper surface, overburden layer 5 upper surface 3for 2cm; At equipped river, described lower shell 4 inside layer of sand 7, the gauge of described river layer of sand 7 and the height dimension H of lower shell 4 2equal, between described kind bed compacting soil layer 6 bottom and river layer of sand 7 top, position is equipped with gauze 3, and the bulk density of soil of the kind bed compacting soil layer 6 in described standard base rod is 1.10-1.20g/cm 3, the bulk density of soil of the kind bed compacting soil layer 6 in described contrast experiment's rod is 1.45-1.55g/cm 3.
When experiment uses, similar seed is broadcast respectively and executes position between excellent in standard base and that contrast experiment is excellent kind bed compacting soil layer 6 upper surface and overburden layer 5 lower surface, the same terms is nursed, and removes in time after emerging to weeds in frame, to avoid weeds root system for the impact of test.To emerge sampling in latter 30 days, plant above ground portion is taken off, unclamps fixing card 2, soybean root system kind between the soil of bed compacting soil layer 6 and river layer of sand 7 is cut off.Fill up native back-off by upper shell 1, rinse bottom soil layer with wash bottle, count soybean root system number; Wash river sand, count and record the root number of crop root through gauze 3.
To pass unit weight for 1.10-1.20g/cm 3soil layer soil as test comparison (CK), with through unit weight for 1.45-1.55g/cm 3soil layer soil is as testing standard (S).To pass 1.45-1.55g/cm 3soil layer root system number with through 1.10-1.20g/cm 3soil layer root system number contrast definition crop root is through the ability of compacted soil, and evaluation index is as follows:
Through S process root system number reach CK process 85%-with CK maintain an equal level, for extremely strong;
70%-85% of CK process is reached, for by force through S process root system number;
55%-70% of CK process is reached, for medium through S process root system number;
40%-55% of CK process is reached through S process root system number, weak;
Through S process root system number reach CK process 40% and following time, for extremely weak;
Implementation result
6 soybean lines are respectively: eastern agriculture 0216, eastern agriculture 1168, eastern agriculture 4400, cultivate 02-347, cultivate 04-8586, cultivate 02-728.Being planted in unit weight is 1.20g/cm 3soil on, root system penetrates soil number without significant difference, and root system number is in table 1.As can be seen here: unit weight is 1.20g/cm 3the inhibition of soil to different lines soybean root system penetration capacity not obvious; It is 1.45g/cm that different lines soybean root system penetrates unit weight 3the ability of soil there is significant difference.The inhibition of the larger downward growth to soybean root system of the bulk density of soil is stronger.
Table 1 different lines soybean root system is 1.20 and 1.45g/cm through unit weight 3the root system number of soil
Different lines soybean root system is 1.45g/cm through unit weight 3it is 1.20g/cm that the root system number of soil accounts for through unit weight 3the ratio of soil is in table 3.Illustrate that different lines soybean is respectively that penetration capacity exists obvious significant difference, it is strong for cultivating 02-347 and cultivating 04-8586 root system penetration capacity, and it is medium for cultivating 02-728 root system penetration capacity, and eastern agriculture 0216, eastern agriculture 4400 and Dong Nong 1168 root system penetration capacity are weak.
Table 2 is 1.45g/cm through unit weight 3it is 1.20g/cm that the soybean root system number of soil accounts for through unit weight 3the ratio (%) of soil
Different lines soybean planting is in no-tillage and turn on the ground, and output is in table 3, and can find that real tillage soybean yields is apparently higher than no-tillage, it is 1.45g/cm that root system penetrates unit weight 3the kind that soil capacity is strong is better in the performance of no-tillage ground output.Cultivate 02-347 and cultivate 04-8586 and be significantly higher than other strains in no-tillage ground output.
Table 3 no-tillagely and turn over ground soybean yields (kg/ mu)

Claims (1)

1. a plant root growth penetration capacity measures excellent group, it is characterized in that: described plant root growth penetration capacity measures excellent group and comprises standard base rod and contrast experiment's rod, the structure of described standard base rod and contrast experiment's rod is: on upper shell (1) following side, install lower shell (4) by fixing card (2), by linking into an integrated entity of upper shell (1) and lower shell (4) concentric, the diameter of bore size Φ of described upper and lower cylindrical shell (1,4) is 20-50cm, the height dimension H of described upper shell (1) 1for 15cm, the height dimension H of lower shell (4) 2for 30cm; Kind of bed compacting soil layer (6) and an overburden layer (5) is equipped with successively from bottom to up, the gauge H of described overburden layer (5) in described upper shell (1) inside 4for 3cm, the gauge H of described kind bed compacting soil layer (6) 5for 10cm, the height distance size H of distance upper shell (1) upper surface, overburden layer (5) upper surface 3for 2cm; In equipped river layer of sand (7), described lower shell (4) inside, the gauge in described river layer of sand (7) and the height dimension H of lower shell (4) 2equal, between described kind bed compacting soil layer (6) bottom and river layer of sand (7) top, position is equipped with gauze (3), and the bulk density of soil of kind bed compacting soil layer (6) in described standard base rod is 1.10-1.20g/cm 3, the bulk density of soil of kind bed compacting soil layer (6) in described contrast experiment's rod is 1.45-1.55g/cm 3.
CN201510319264.8A 2015-06-11 2015-06-11 Rod bank for testing plant root growth penetrating power Pending CN104871792A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108072737A (en) * 2016-11-11 2018-05-25 天津市奇才防水材料有限公司 A kind of root-resistant puncturing performance rapid detection method
CN108605466A (en) * 2018-04-23 2018-10-02 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） A kind of bathmic device of monitoring crop seeds main root and monitoring method
CN109298132A (en) * 2017-07-25 2019-02-01 中国石油天然气股份有限公司 Plant root system penetrating power prediction method and device

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108072737A (en) * 2016-11-11 2018-05-25 天津市奇才防水材料有限公司 A kind of root-resistant puncturing performance rapid detection method
CN109298132A (en) * 2017-07-25 2019-02-01 中国石油天然气股份有限公司 Plant root system penetrating power prediction method and device
CN108605466A (en) * 2018-04-23 2018-10-02 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） A kind of bathmic device of monitoring crop seeds main root and monitoring method
CN108605466B (en) * 2018-04-23 2020-12-22 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） Device and method for monitoring growth force of main roots of crop seeds

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Application publication date: 20150902