CN104067801B - A kind of determination methods of transplanting tobacco seedling dynamic advantage root district - Google Patents
A kind of determination methods of transplanting tobacco seedling dynamic advantage root district Download PDFInfo
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- CN104067801B CN104067801B CN201410270746.4A CN201410270746A CN104067801B CN 104067801 B CN104067801 B CN 104067801B CN 201410270746 A CN201410270746 A CN 201410270746A CN 104067801 B CN104067801 B CN 104067801B
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Abstract
The present invention relates to a kind of determination methods of transplanting tobacco seedling dynamic advantage root district, it is characterized in that comprising the steps: 1, selecting predetermined target is experimental field with transplanting, 2, will the tobacco seedling of transplanting be needed to classify according to size specification, the classification of tobacco seedling divides with Different periods; 3, tobacco seedling is transplanted Implantation Test ground by classification specification, the tobacco seedling of every class specification is got 5 and is transplanted sample, and 6 strain tobacco seedlings got by each transplanting sample; 4, after tobacco seedling transplant survival, output circular groove by different distances around tobacco seedling trunk and apply instant nitrogenousfertilizer, 5, observe the growth of cereal crop seedlings; 6, the advantage root district of each classification specification tobacco seedling is determined according to the growing way of tobacco seedling; Classified by the tobacco seedling of Different periods, the dynamic advantage root district of tobacco seedling at Different periods can be showed.The present invention, by the judgment experiment in advantage root district, determines the dynamic advantage root district of Different periods tobacco seedling, is beneficial to and carries out Classification Management to tobacco seedling plant, reaches the managerial skills promoting tobacco seedling plant, promotes the object of tobacco planting production development.
Description
Technical field:
The present invention relates to a kind of determination methods of transplanting tobacco seedling dynamic advantage root district, belong to crop cultivation technical field.
Background technology:
Tobacco (Nicotianatabacum) is the general name of Solanaceae, Nicotiana one class crop.The root of tobacco belongs to circular cone root system, is made up of main root, side root and adventive root three part.
Tobacco seed is when sprouting, and radicle is broken through direct growth after seed coat and formed main root, the at different levels large subbranch that main root produces side root, by the root that stem occurs adventive root.
This genus of tobacco system of taproot plant, during owing to transplanting, the bottom of main root is cut off, later the just more branch roots at main root welding technology some growth, and side root can grow secondary side root and three grades of side roots etc. again.Therefore the main root of tobacco is not obvious, and side root and adventive root are the chief components of tobacco root.
Because root hair zone is the major part that tobacco root absorbs nutrient, and root hair zone constitutes different advantage root districts because of the overlap of different root system root hair zone.Namely the absorption function in certain a part of root district is greater than other parts.Make full use of the absorption function in advantage root district, just can absorb nutrient better, promote growing vigorously of tobacco plant.But in current tobacco planting is produced, management routinely just carries out the operation of the farming such as intertill and clean tillage, fertilising in scope roughly around tobacco plant seedling, also do not accomplish that the scope in the advantage root district by tobacco seedling carries out meticulous operation, so not only do not give full play to effect of fertilizer, waste effective resource, also be unfavorable for that the morning of tobacco plant is raw fast long, have impact on the development that tobacco planting is produced.
Summary of the invention:
In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a kind of determination methods of transplanting tobacco seedling dynamic advantage root district, by the judgment experiment in advantage root district, determine the dynamic advantage root district of Different periods tobacco seedling, be beneficial to and Classification Management is carried out to tobacco seedling plant, reach the managerial skills promoting tobacco seedling plant, promote the object of tobacco planting production development.
The present invention realizes above-mentioned purpose by following technical solution.
A kind of determination methods of transplanting tobacco seedling dynamic advantage root district provided by the invention, comprises the steps:
(1) selected soil
It is experimental field that selected predetermined target transplants ground, experimental field wants fertility even, can represent the soil texture, the fertilizer and water condition of transplanting region, ground;
(2) classification of tobacco seedling
By needing the tobacco seedling of transplanting to classify according to size specification, in the same size, that growth potential is substantially identical seedling being classified as a class, supplying examination object as what test; The classification of tobacco seedling divides with Different periods;
During transplanting, tobacco seedling can be divided into 2 classes; Diameter be more than 0.6cm be a class seedling, diameter be 0.6cm and following be two class seedlings;
Transplant latter 25 days, with the diameter of tobacco seedling for foundation, the minimum of diameter and the interval of peak are divided into trisection, tobacco seedling is divided into 3 classes, diameter is interval belonging to peak is a class seedling, diameter is interval belonging to mean value is two class seedlings, and diameter is interval belonging to minimum is three class seedlings;
Equally, transplant latter 50 days, transplant latter 75 days, by above-mentioned method, tobacco seedling is divided into 3 classes;
(3) implantation tobacco seedling is transplanted
Tobacco seedling is transplanted Implantation Test ground by classification specification, and after tobacco seedling is transplanted and implanted, the table soil of pressing tobacco seedling, pours into normal root water, in order to surviving;
The tobacco seedling of every class specification is got 5 and is transplanted sample, and 6 strain tobacco seedlings got by each transplanting sample;
The process of 5 fertilising distances is respectively apart from tobacco seedling trunk 5cm, 10cm, 15cm, 20cm, 25cm;
The minimum spacing in the rows of transplanting between sample is 1.4 times of fertilising distance process maximum;
(4) trench digging and fertilising
After tobacco seedling transplant survival, to 5 tobacco seedlings of transplanting sample respectively by the distance apart from tobacco seedling trunk 3 ~ 5cm, 8 ~ 10cm, 13 ~ 15cm, 18 ~ 20cm, 23 ~ 25cm, output circular groove around tobacco seedling trunk, the width of groove is 2 ~ 3cm, and the degree of depth is 1.5 ~ 2.0cm;
In the circular groove of every strain tobacco seedling, apply 5g instant nitrogenousfertilizer equably, then earthing;
Instant nitrogenousfertilizer is urea;
Equally, to tobacco seedling transplant latter 25 days, transplant latter 50 days, transplant the transplanting sample of latter 75 day period, undertaken ditching, applying fertilizer by above-mentioned method;
(5) growth of cereal crop seedlings is observed
After fertilising, the difference of observing each corresponding period transplants the growing way of sample tobacco seedling, adds up each leaf look of transplanting sample tobacco seedling and the mean value of growth rate, determines the optimization process of the transplanting sample tobacco seedling of each classification specification and each transplanting plant spacing;
(6) advantage root district is determined
According to the observed result of tobacco seedling growing way, determine the advantage root district of each classification specification tobacco seedling; Classified by the tobacco seedling of Different periods, the dynamic advantage root district of tobacco seedling at Different periods can be showed.
The present invention has following beneficial effect compared with prior art:
1, the accuracy of test is high.By analyzing the growth response of different tobacco seedling, determine the transplanting sample of optimization process, the correlation utilizing tobacco seedling plant " under ground portion-root system " and " acrial part-cauline leaf " to grow is to judge the advantage root district of tobacco seedling; And according to the change in Different periods advantage root district, obtain the dynamic advantage root district of representative area tobacco seedling.
2, with low cost.Utilize the correlation of the overall different parts of crop to judge its advantage root district, with low cost, applied widely.
3, the precision management of tobacco seedling is promoted.Determine the dynamic advantage root district of tobacco seedling, be beneficial to the growth management carried out targetedly tobacco seedling, fertilizer is executed tobacco dynamic advantage root district, be conducive to the effect giving full play to fertilizer, good in economic efficiency.
Embodiment:
Below in conjunction with specific embodiment, the invention will be further described.
In West of Hubei Province somewhere, plant the tobacco being implanted with hundreds thousand of mu.These tobaccos are mainly managed by artificial cultivation.
According to the principle in crop advantage root district, carry out following test.
During transplanting, tobacco seedling is divided into 2 classes; Diameter be more than 0.6cm be a class seedling, diameter be 0.6cm and following be two class seedlings; Fertilizer treatment is carried out after transplanting 7 days (the also current of tobacco).The fertilising distance cleanup standard of 5cm, 10cm, 15cm, 20cm, 25cm of Fertilizer Application Design; Apart from the distance of tobacco seedling trunk 3 ~ 5cm, 8 ~ 10cm, 13 ~ 15cm, 18 ~ 20cm, 23 ~ 25cm, excavate out circular groove around tobacco seedling trunk, apply fertilizer.In the circular groove of every strain tobacco seedling, apply 5g instant nitrogenousfertilizer equably, instant nitrogenousfertilizer is urea, then earthing.Apply fertilizer investigation in latter 15 days, the longest with the process of the fertilising of 8-10cm distance of the leaf length of a class seedling, leaf reaches 18cm, and the longest with the process of the fertilising of 3-5cm distance of the leaf length of two class seedlings, leaf is long is 16cm.
This result shows, the advantage root district of a class seedling concentrates on the section apart from stem 8-10cm, and the advantage root district of two class seedlings concentrates on the section apart from stem 3-5cm.
Fertilizer treatment test is carried out, the fertilising distance cleanup standard of 5cm, 10cm, 15cm, 20cm, 25cm of Fertilizer Application Design to transplanting the tobacco seedling of latter 25 days; Apart from the distance of tobacco seedling trunk 3 ~ 5cm, 8 ~ 10cm, 13 ~ 15cm, 18 ~ 20cm, 23 ~ 25cm, excavate out circular groove around tobacco seedling trunk, apply fertilizer.In the circular groove of every strain tobacco seedling, apply 5g instant nitrogenousfertilizer equably, instant nitrogenousfertilizer is urea, executes rear earthing.Latter one week of fertilising, shows the investigation of tobacco leaf length: the leaf length of a class seedling is the longest apart from what process with the fertilising of 23-25cm, and leaf is long is 35cm; The leaf length of two class seedlings is the longest apart from what process with the fertilising of 18-20cm, and leaf is long is 32cm; The leaf length of three class seedlings is the longest apart from what process with the fertilising of 13-15cm, and leaf is long is 28cm.
This result shows, the advantage root district of a class seedling concentrates on the section apart from stem 23-25cm, and the advantage root district of two class seedlings concentrates on the section apart from stem 18-20cm, and the advantage root district of three class seedlings concentrates on the section apart from stem 13-15cm.
Classified by the tobacco seedling of Different periods, the dynamic advantage root district of tobacco seedling at Different periods can be showed.
According to the judgement adjustment fertilising distance in different tobacco seedling advantage root district, emphasize the absorption in advantage root district and the unification in artificially applying fertilizer interval, can fertilizer efficiency be improved, promote the total tune growth of tobacco seedling, also improve field management level.
Claims (5)
1. transplant the determination methods in tobacco seedling dynamic advantage root district, it is characterized in that comprising the steps:
(1) selected soil
It is experimental field that selected predetermined target transplants ground, experimental field wants fertility even, can represent the soil texture, the fertilizer and water condition of transplanting region, ground;
(2) classification of tobacco seedling
By needing the tobacco seedling of transplanting to classify according to size specification, in the same size, that growth potential is substantially identical seedling being classified as a class, supplying examination object as what test; The classification of tobacco seedling divides with Different periods;
(3) implantation tobacco seedling is transplanted
Tobacco seedling is transplanted Implantation Test ground by classification specification, and after tobacco seedling is transplanted and implanted, the table soil of pressing tobacco seedling, pours into normal root water, in order to surviving; The tobacco seedling of every class specification is got 5 and is transplanted sample, and 6 strain tobacco seedlings got by each transplanting sample;
(4) trench digging and fertilising
After tobacco seedling transplant survival, to 5 tobacco seedlings of transplanting sample respectively by the distance apart from tobacco seedling trunk 3 ~ 5cm, 8 ~ 10cm, 13 ~ 15cm, 18 ~ 20cm, 23 ~ 25cm, circular groove is outputed around tobacco seedling trunk, in the circular groove of every strain tobacco seedling, apply 5g instant nitrogenousfertilizer equably, then earthing;
Equally, to tobacco seedling transplant latter 25 days, transplant latter 50 days, transplant the transplanting sample of latter 75 day period, undertaken ditching, applying fertilizer by above-mentioned method;
(5) growth of cereal crop seedlings is observed
After fertilising, the difference of observing each corresponding period transplants the growing way of sample tobacco seedling, adds up each leaf look of transplanting sample tobacco seedling and the mean value of growth rate, determines the optimization process of the transplanting sample tobacco seedling of each classification specification and each transplanting plant spacing;
(6) advantage root district is determined
According to the observed result of tobacco seedling growing way, determine the advantage root district of each classification specification tobacco seedling; Classified by the tobacco seedling of Different periods, the dynamic advantage root district of tobacco seedling at Different periods can be showed.
2. a kind of determination methods of transplanting tobacco seedling dynamic advantage root district according to claim 1, when it is characterized in that transplanting, can be divided into 2 classes by tobacco seedling; What diameter was greater than 0.6cm is a class seedling, and what diameter was equal to or less than 0.6cm is two class seedlings;
Transplant latter 25 days, with the diameter of tobacco seedling for foundation, the minimum of diameter and the interval of peak are divided into trisection, tobacco seedling is divided into 3 classes, diameter is interval belonging to peak is a class seedling, diameter is interval belonging to mean value is two class seedlings, and diameter is interval belonging to minimum is three class seedlings;
Equally, transplant latter 50 days, transplant latter 75 days, by above-mentioned method, tobacco seedling is divided into 3 classes.
3. a kind of determination methods of transplanting tobacco seedling dynamic advantage root district according to claim 2, is characterized in that the process of 5 fertilising distances is respectively apart from tobacco seedling trunk 5cm, 10cm, 15cm, 20cm, 25cm; The minimum spacing in the rows of transplanting between sample is 1.4 times of fertilising distance process maximum.
4. a kind of determination methods of transplanting tobacco seedling dynamic advantage root district according to claim 3, it is characterized in that the width of groove is 2 ~ 3cm, the degree of depth is 1.5 ~ 2.0cm.
5. a kind of determination methods of transplanting tobacco seedling dynamic advantage root district according to claim 4, is characterized in that instant nitrogenousfertilizer is urea.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101658107A (en) * | 2009-09-18 | 2010-03-03 | 华南农业大学 | Method for in-situ dynamic observation and measurement of root system of plant |
| EP1334199B1 (en) * | 2000-11-13 | 2011-07-13 | Unicrop Oy | A transformation system in camelina sativa |
| CN102763573A (en) * | 2012-07-05 | 2012-11-07 | 华南农业大学 | Plant root system in-situ dynamic observation device, system and method under soil culture conditions |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1334199B1 (en) * | 2000-11-13 | 2011-07-13 | Unicrop Oy | A transformation system in camelina sativa |
| CN101658107A (en) * | 2009-09-18 | 2010-03-03 | 华南农业大学 | Method for in-situ dynamic observation and measurement of root system of plant |
| CN102763573A (en) * | 2012-07-05 | 2012-11-07 | 华南农业大学 | Plant root system in-situ dynamic observation device, system and method under soil culture conditions |
Non-Patent Citations (3)
| Title |
|---|
| 烟草根系形态发育模拟模型;马新明等;《中国农业科学》;20050630;第38卷(第12期);第2421-2427页 * |
| 烟草根系生长的三维模拟仿真;席磊等;《微电子学与计算机》;20100430;第27卷(第4期);第106-110页 * |
| 烤烟根系构型及动态建成规律的研究;易建华等;《作物学报》;20050731;第31卷(第7期);第915-920页 * |
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