CN103477904B - A kind of efficient drought-resistant seedling medium composition and method of making the same and application - Google Patents

A kind of efficient drought-resistant seedling medium composition and method of making the same and application Download PDF

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CN103477904B
CN103477904B CN201310448655.0A CN201310448655A CN103477904B CN 103477904 B CN103477904 B CN 103477904B CN 201310448655 A CN201310448655 A CN 201310448655A CN 103477904 B CN103477904 B CN 103477904B
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seedling
acrylamide
copolymerization thing
medium composition
crosslinking copolymerization
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CN103477904A (en
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杨春江
张晓海
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Yunnan Academy of Tobacco Agricultural Sciences
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Yunnan Academy of Tobacco Agricultural Sciences
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Abstract

The invention discloses a kind of efficient drought-resistant seedling medium composition and method of making the same and application, belong to floating seedlings technical field.Described seedling medium composition comprises acrylamide-2 ~ 4 parts, acrylates crosslinking copolymerization thing colloid by volume and cultivation base stock 6 ~ 8 parts.The preparation of described seedling medium composition comprises imbibition, mixture operation, first acrylamide-acrylates crosslinking copolymerization thing is mixed according to mass ratio 1:150 ~ 200 with water, after its abundant imbibition, then acrylamide by volume-2 ~ 4 parts, acrylates crosslinking copolymerization thing colloid is fully mixed with cultivation base stock 6 ~ 8 parts.Seedling medium of the present invention has excellent drought-resistant water-preserving fertilizer conservation characteristic, can effectively promote seedling early growth and quick tiller, strengthen drought-resistant ability, significantly improve emergence rate and transplanting survival rate, and production technology is simple, easy to use, by drought-resistant water-preserving fertilizer conservation effectively through the links of seedling fostering, the cultivation in be applicable to all kinds of seedling especially tobacco strong sprout, has good application value.

Description

A kind of efficient drought-resistant seedling medium composition and method of making the same and application
Technical field
The invention belongs to floating seedlings technical field, be specifically related to a kind of moisturizing, lock water is remarkably productive, fertilizer conservation, air capacity of soils are excellent, and production technology is simple, easy to use, drought resisting seedling medium composition and method of making the same and the application of seeding ratio and transplanting survival rate can be significantly improved.
Background technology
Floating seedlings has concentrated the advantages such as the cultivation of water planting, Nutrition Soil, the cultivation of alms bowl formula in one, is the nursery new technology widelyd popularize in recent years, obtains and apply more and more widely on tobacco, vegetables, flowers and achievements in forest-tree seedling are produced.The matrix adopted in floating seedlings system is the basis of nursery, growing and improving its resistance and have conclusive impact seedling.First, matrix promotes seedling root growth, improves its moisture with nutriment absorbs, increase seedling drought resistance, the key factor of raising emergence rate; Secondly, matrix moves in company with seedling in the lump when field-transplanting, and for the plant strain growth after transplanting provides lasting moisture and nutriment to supply, metastable field planting environmental benefits of taking root, in enhancing plant drought resistance, ensures transplanting survival rate.Particularly short in the duration in rainy season, precipitation is few, the area that damage caused by a drought takes place frequently, want to cultivate root system development good, sprout neat, growth rapidly, strong drought resistance, the strong sprout that transplanting survival rate is high, more be necessary research and development one with plant strain growth climatic environment feature for design basis, fully comply with the excellent substrates formula of seedling development characteristic, and the preparation method matched and seedling foster technology, this is for the deep popularization of floating seedlings technology, promote peasant household's increasing both production and income, be all of great practical significance and using value.
Summary of the invention
The first object of the present invention is to provide a kind of moisturizing, lock water remarkably productive, and fertilizer conservation, air capacity of soils are excellent, and production technology is simple, easy to use, can significantly improve the drought resisting seedling medium composition of seeding ratio and transplanting survival rate; Second object is the preparation method providing described drought resisting seedling medium composition; 3rd object is to provide the application of described drought resisting seedling medium composition in tobacco floating seed rearing system.
The first object of the present invention is achieved in that a kind of efficient drought-resistant seedling medium composition, and described component comprises acrylamide-2 ~ 4 parts, acrylates crosslinking copolymerization thing colloid by volume and cultivation base stock 6 ~ 8 parts.
The second object of the present invention is achieved in that a kind of preparation method of described efficient drought-resistant seedling medium composition, comprises imbibition, mixture operation, specifically comprises:
A, imbibition: mixed according to mass ratio 1:150 ~ 200 with water by acrylamide-acrylates crosslinking copolymerization thing, after its abundant imbibition, obtain acrylamide-acrylates crosslinking copolymerization thing colloid;
B, mixture: acrylamide by volume-2 ~ 4 parts, acrylates crosslinking copolymerization thing colloid is fully mixed with cultivation base stock 6 ~ 8 parts.
The third object of the present invention is achieved in that the application of described efficient drought-resistant seedling medium composition in tobacco floating seed rearing system.
The present invention has following beneficial effect:
1, described drought resisting seedling medium composition adopts super absorbent resin (acrylamide-acrylates crosslinking copolymerization thing) as moisturizing base-material, lock water, fertilizer conservation are remarkably productive, can effectively promote growing of seedling root system, improve its absorption to moisture, nutriment, Utilization ability, effectively can improve the emergence rate of seedling, and sprout neat, robust growth.
2, the preferred peat composed of rotten mosses of described drought resisting seedling medium composition as humic base-material, perlite as absorption base-material, pH value both it is subacidity, be conducive to the absorbent improving acrylamide-acrylates crosslinking copolymerization thing, the synergy of moisturizing base-material and cultivation base stock can strengthen water conservation, the drought-resistant ability of matrix further, promotes seedling early growth and quick tiller.
3, described drought resisting seedling medium composition is particularly useful for floating seedlings system, moisture that is relatively gentle, that continue, nutriment supply can be provided for growing of hardening phase seedling, ensure carrying out smoothly of arid circulation hardening, thus be conducive to the drought resistance improving seedling, shorten transplanting seedling time, promote the rapid field planting after kind of transplantation of seedlings.
4, described drought resisting seedling medium composition moves into land for growing field crops at transplanting time in the lump in company with seedling, effectively ensure that stable, the sufficient supply of liquid manure needed for transplanting time planting seedlings, be conducive to improving seedling transplanting survival rate, be adapted to drought period especially longer, the plant strain growth environment that precipitation is on the low side.
5, the raw material sources of described drought resisting seedling medium composition are extensive, and interchangeability is strong, and synthesis technique is ripe, and the preparation method of described matrix is also simple and easy to do, efficient stable.
6, the component of described drought resisting seedling medium composition, proportioning according to grow characteristic and the environment for use feature of different seedling, can adjust within the specific limits flexibly, easy to use, the cultivation in be applicable to all kinds of seedling especially tobacco strong sprout.
In sum, seedling medium of the present invention has excellent drought-resistant water-preserving fertilizer conservation characteristic, can effectively promote seedling early growth and quick tiller, strengthen the drought-resistant ability of seedling, significantly improve emergence rate and transplanting survival rate, easy to use, the cultivation in be applicable to all kinds of seedling especially tobacco strong sprout.Compared with the drough-relief method be added on by water-loss reducer in seed pelleting, the use of seedling medium of the present invention can not have an impact to the dry run of capsuled seed; And with add the drough-relief method of water-loss reducer in transplanting process compared with, seedling medium of the present invention is by the links of drought-resistant water-preserving fertilizer conservation through seedling fostering, overcome water-loss reducer stage in traditional drough-relief method to add, especially circulating, arid hardening phase liquid manure supply is unstable brings dysgenic technical problem to seedling development, has good application value.
Embodiment
The present invention is further illustrated below, but limited the present invention never in any form, and based on any conversion that training centre of the present invention is done, the present invention all falls into protection scope of the present invention.
A kind of efficient drought-resistant seedling medium composition, described component comprises acrylamide-2 ~ 4 parts, acrylates crosslinking copolymerization thing colloid by volume and cultivation base stock 6 ~ 8 parts.
Acrylamide-3 parts, acrylates crosslinking copolymerization thing colloid by volume and cultivation base stock 7 parts is preferably included in described component.
Described acrylamide-acrylates crosslinking copolymerization thing colloid be by acrylamide-acrylates crosslinking copolymerization thing and water formulated according to mass ratio 1:150 ~ 200.
Described acrylamide-acrylates crosslinking copolymerization thing colloid preferably by acrylamide-acrylates crosslinking copolymerization thing and water formulated according to mass ratio 1:175.
Described cultivation base stock be humic base-material or absorption base-material in any one or several.
Described humic base-material is any one or several in the peat composed of rotten mosses, humus soil, paddy soil or wood fibre waste; Described absorption base-material is any one or several in perlite, vermiculite, mudstone or stone frame soil.
Any one or two kinds of in the preferred peat composed of rotten mosses of described humic base-material or paddy soil; Any one or several in the preferred perlite of described absorption base-material, mudstone or stone frame soil.
Described humic base-material is more preferably the peat composed of rotten mosses; Described absorption base-material is more preferably perlite or mudstone.
A preparation method for described efficient drought-resistant seedling medium composition, comprises imbibition, mixture operation, specifically comprises:
A, imbibition: mixed according to mass ratio 1:150 ~ 200 with water by acrylamide-acrylates crosslinking copolymerization thing, after its abundant imbibition, obtain acrylamide-acrylates crosslinking copolymerization thing colloid;
B, mixture: acrylamide by volume-2 ~ 4 parts, acrylates crosslinking copolymerization thing colloid is fully mixed with cultivation base stock 6 ~ 8 parts.
Described efficient drought-resistant seedling medium composition is particularly useful for the floating seedlings system of tobacco.
embodiment 1
(1) preparation of drought resisting seedling medium composition
A, imbibition: mixed according to mass ratio 1:175 with water 175kg by acrylamide-acrylates crosslinking copolymerization thing 1kg, after its abundant imbibition, obtain acrylamide-acrylates crosslinking copolymerization thing colloid;
B, mixture: acrylamide by volume-acrylates crosslinking copolymerization thing colloid is required fully to mix according to experimental design with cultivation base stock.
(2) the using of drought resisting seedling medium composition
Experiment kind: cloud and mist 87
Experiment place: nursery workshop, Zhen great Fen mountain, Yongping, Jing Gu county, Puer City
Experimental technique:
Adopt pond sludge, river sand, mudstone and the peat composed of rotten mosses respectively as cultivation base stock, after mixing according to the volume ratio of 6:4,7:3,8:2,9:1 respectively with 1:175 acrylates-acrylamide crosslinking copolymerization thing colloid, be mixed with drought resisting seedling medium composition.
Often organize material and establish 4 process altogether, randomized arrangement.Experiment area is 1 floating little Chi (1.35 × 6.85m); Each process fills 10 dish experiment process materials.
In the seeding stage, become seedlings investigation emergence rate and planting percent, in the incidence of little cross phase investigation spiral root.Investigate in strict accordance with " YC/T 142-2010 tobacco economical character investigation measuring method " in fact-finding process.
Experimental result:
1. different substrate combination composition formulas is on the impact of seedling emergence rate
As shown in table 1, acrylamide-acrylates crosslinking copolymerization thing the colloid of pond sludge and 1:175 according to the emergence rate of the base composition of different volume ratio mixtures between 36.2 ~ 43.7%, wherein with pond sludge and 1:175 acrylamide-acrylates crosslinking copolymerization thing colloid minimum according to the emergence rate of the base composition of the volume ratio mixture of 6:4, only have 36.4%.River sand is secondary low according to the emergence rate of the base composition of different volume ratio mixtures from 1:175 acrylamide-acrylates crosslinking copolymerization thing colloid, between 81.5 ~ 82.5%.
And mudstone and the peat composed of rotten mosses reach more than 88% according to the emergence rate of the base composition of different volume ratio mixtures respectively substantially from 1:175 acrylamide-acrylates crosslinking copolymerization thing colloid, especially adopt the emergence rate of the base composition of the volume ratio mixture of 6:4,7:3,8:2 substantially all more than 90%, average 94.0%, illustrate that seedling medium composition of the present invention effectively can improve the emergence rate of seedling.
The different cultivation base stock of table 1 and different component proportioning are on the impact of seedling emergence rate
2. different substrate combination composition formulas is on the impact of seedling planting percent
As shown in table 2, pond sludge and 1:175 acrylamide-acrylates crosslinking copolymerization thing colloid according to the planting percent of the base composition of different volume ratio mixtures between 17.2 ~ 30.2%, wherein with pond sludge and 1:175 acrylamide-acrylates crosslinking copolymerization thing colloid slightly high according to the planting percent of the base composition of the volume ratio mixture of 9:1, also only reach 30.2%.River sand and 1:175 acrylamide-acrylates crosslinking copolymerization thing colloid are 76.5 ~ 82.6% according to the planting percent of the base composition of different volume ratio mixtures.
And mudstone and the peat composed of rotten mosses all reach more than 83.5% according to the planting percent of the base composition of different volume ratio mixtures respectively from 1:175 acrylamide-acrylates crosslinking copolymerization thing colloid, average 86.2%, far above the planting percent mean value 79.8% of river sand as the base composition of cultivation base stock.Illustrate that the raising of seedling medium composition of the present invention to seedling planting percent has obvious facilitation.
The different cultivation base stock of table 2 and different component proportioning are on the impact of seedling planting percent
embodiment 2
(1) preparation of drought resisting seedling medium composition
A, imbibition: mixed according to mass ratio 1:150 with water 150kg by acrylamide-acrylates crosslinking copolymerization thing 1kg, after its abundant imbibition, obtain acrylamide-acrylates crosslinking copolymerization thing colloid;
B, mixture: acrylamide by volume-3 parts, acrylates crosslinking copolymerization thing colloid is fully mixed with perlite 7 parts.
(2) the using of drought resisting seedling medium composition
Experiment kind: Zimbabwe introduced variety KRK26
Experiment place: nursery workshop, Zhen great Fen mountain, Yongping, Jing Gu county, Puer City
Experimental technique:
Experiment establishes perlite and 1:150 acrylamide-acrylates crosslinking copolymerization thing colloid according to the base composition process of the volume ratio mixture of 7:3 and pearlite interstitial substance process in contrast, randomized arrangement.Experiment area is 1 floating little Chi (1.35 × 6.85m), and often process fills 20 dish experiment process materials.
Respectively in cigarette seedling little cross phase, grand cross phase, the phase of taking root, become seedlings investigation overground part, the dry weight and fresh weight of plant seedlings of underground part, stem is thick, stem is high, the length and width of maximum blade.Investigation emergence rate and the incidence of spiral root, 60 ~ 65d investigate planting percent and strong sprout rate.Investigate in strict accordance with " YC/T 142-2010 tobacco economical character investigation measuring method " in fact-finding process.
Experimental result:
1. different seedling mediums is on the impact of seedling emergence situation and economical character
As shown in Table 3, when adopting the base composition of perlite and 1:150 acrylamide-acrylates crosslinking copolymerization thing colloid mixture to carry out floating seedlings, the seeding stage of seedling is consistent with contrast, and emergence rate is higher than contrast 2%, and the incidence of spiral root is lower than contrast 1%.And perlite and the formulated base composition of 1:150 acrylamide-acrylates crosslinking copolymerization thing colloid are emerged more neat when floating seedlings.Grand cross after date, the Floating seedling adopting perlite and the formulated base composition of 1:150 acrylamide-acrylates crosslinking copolymerization thing colloid to cultivate grows rapidly, the phase of taking root, the seedling stage of one-tenth and contrast basically identical, planting percent and strong sprout rate all higher than contrast 1 ~ 2%.
The different seedling medium of table 3 is on the impact of seedling emergence situation
Seedling medium Emergence rate (%) Spiral root (%) Planting percent (%) Rate in strong sprout (%)
Mixed substrate 95.0 0.5 91 87
Perlite 93.0 1.5 90 85
As shown in Table 4, in nursery in earlier stage, every economical character of the Floating seedling adopting the base composition of perlite and 1:150 acrylamide-acrylates crosslinking copolymerization thing colloid mixture to cultivate, thick, the maximum leaf length of as high in stem, stem etc. are all in the trend increased progressively.And in the nursery later stage, the cane of corresponding seedling is sturdy, total quality is all better than contrast.Illustrate that seedling medium composition of the present invention can effectively promote growing of seedling.
The different seedling medium of table 4 is on the impact of different growing seedling economical character
2. different seedling mediums is on the impact of different growing seedling dry-matter accumulation
Dry-matter accumulation in seedling reflects its Absorption to nutrient, and whether closely related the number of dry matter is with seedling stalwartness.As shown in table 5, from emerging to the grand cross phase, the overground part dry weight and fresh weight of plant seedlings of the Floating seedling adopting perlite to cultivate with the base composition of 1:150 acrylamide-acrylates crosslinking copolymerization thing colloid mixture is slightly smaller than and contrasts, and the fresh and dried weight average of underground part is greater than contrast.The phase of taking root with become seedling stage, the overground part of Floating seedling adopting perlite and the base composition of 1:150 acrylamide-acrylates crosslinking copolymerization thing colloid mixture to cultivate and the fresh and dried weight average of underground part are greater than and contrast.Illustrate that seedling medium composition of the present invention can improve seedling to the absorption of moisture, nutriment, Utilization ability, thus add the dry-matter accumulation in body.
The different seedling medium of table 5 is on the impact of different growing seedling dry-matter accumulation
3. different seedling mediums is on the impact of different growing seedling root growth and development
As shown in table 6, before sowing 28d, the total radical of Floating seedling adopting perlite to cultivate with the base composition of 1:150 acrylamide-acrylates crosslinking copolymerization thing colloid mixture is less than and contrasts, after sowing 35d, Floating seedling root growth is rapid, and side radical increases more.323 are reached, than many 67 of contrast to total radical during 60d seedling.At seedling early growth in earlier stage, employing perlite and the Floating seedling that 1:150 acrylamide-base composition of acrylates crosslinking copolymerization thing colloid mixture is cultivated grow slightly slow, radical is less slightly, enter grand cross after date, along with temperature raises, seedling photosynthesis strengthens, and advantageously in the growth of root system, is increased to maximum to radical total during seedling.Illustrate that the seedling root system adopting the more existing generic media of seedling medium composition of the present invention to cultivate is more flourishing, growth is more healthy and stronger.
The different seedling medium of table 6 is on the impact of different growing seedling root growth
embodiment 3
(1) preparation of drought resisting seedling medium composition
A, imbibition: mixed according to mass ratio 1:200 with water 600kg by acrylamide-acrylates crosslinking copolymerization thing 3kg, after its abundant imbibition, obtain acrylamide-acrylates crosslinking copolymerization thing colloid;
B, mixture: acrylamide by volume-acrylates crosslinking copolymerization thing colloid is required fully to mix according to experimental design with cultivation base stock.
(2) the using of drought resisting seedling medium composition
Experiment kind: K326, cloud and mist 87
Experiment place: nursery point, Ma Jiafen village of Rui Dong villagers' committee, overboard town, Xuanwei City, Qujing, Yanshan County Pingyuan County of Wenshan Prefecture Yao room, town commercialization nursery point are concentrated in Cang Ling town, Chuxiong Prefecture Chuxiong.
Experimental technique:
The experiment of matrix floating seedlings adopts randomised block design, and 9 process are established in experiment, do not do design iterations, and each process floating seedling culturing dish for tobacco 3 dish in 162 holes does floating seedlings experiment; Potted plant drought resistance experiment is established and is repeated for 3 times, randomised block design.On May 7th, 2013 transplants, and plants cigarette 270 strain altogether.On February 20th, 2013 carries out the preparation of seedling medium composition and sows.Method is as follows: by good for the volume ratio mixture of acrylamide-acrylates crosslinking copolymerization thing colloid and the native empirically designing requirement of the peat composed of rotten mosses, paddy soil and stone frame, even sabot respectively again, then coil special platen with 162 hole drifts in the matrix installing different component proportioning, extrude sowing cave, then the disposable sowing of 162 hole special seeder is used, gently smear matrix with have gentle hands to be covered, finally put into floating pool by broadcasting the drift dish of planting, management is after planting undertaken by the management of general commercial floating seedlings.Experiment Treatment Design is as follows:
Process 1: acrylamide-acrylates crosslinking copolymerization thing colloid: the peat composed of rotten mosses=4:6
Process 2: acrylamide-acrylates crosslinking copolymerization thing colloid: the peat composed of rotten mosses=3:7
Process 3: acrylamide-acrylates crosslinking copolymerization thing colloid: the peat composed of rotten mosses=2:8
Process 4: acrylamide-acrylates crosslinking copolymerization thing colloid: paddy soil=4:6
Process 5: acrylamide-acrylates crosslinking copolymerization thing colloid: paddy soil=3:7
Process 6: acrylamide-acrylates crosslinking copolymerization thing colloid: paddy soil=2:8
Process 7: acrylamide-acrylates crosslinking copolymerization thing colloid: stone frame soil=4:6
Process 8: acrylamide-acrylates crosslinking copolymerization thing colloid: stone frame soil=3:7
Process 9: acrylamide-acrylates crosslinking copolymerization thing colloid: stone frame soil=2:8
Economical character measures: at after planting 15d investigation emergence rate, respectively at after planting 25d, 35d, 45d, 60d and become representative seedling 10 strain of 9:0 ~ 10:00 growth selection uniformity in seedling stage, measure every economical character index of seedling, comprise stem girth, stem is high, root, stem and leaf dry weight and fresh weight of plant seedlings, root long and root volume.Variance analysis statistical method is adopted to carry out data processing.Experimentation is investigated in strict accordance with " YC/T 142-2010 tobacco economical character investigation measuring method ".
Drought resistance measures: each 30 strains of representative seedling seedling of growth selection uniformity, are divided into 3 groups, carry out potted plant drought resistance experiment.After watering a small amount of normal root water, do not water for a long time, observe death rate, the wilted percent of statistics seedling.
Experimental result:
1. different substrate combination composition formulas is on the impact of seedling emergence rate
As shown in table 7, when adopting the base composition of different cultivation base stock, different ratio to carry out floating seedlings process, the emergence rate in three experiment places all reaches more than 81%.From the selection of cultivation base stock, during using the peat composed of rotten mosses as cultivation base stock, the emergence rate of seedling is the highest, and the mean value in three experiment places reaches 92.6%, and be secondly paddy soil cultivation base stock, the mean value of its seedling emergence rate is 92.4%.From the proportioning of acrylamide-acrylates crosslinking copolymerization thing colloid and cultivation base stock, when the ratio of the two is 4:6, the mean value of seedling emergence rate is the highest, is 94.2%, and when the ratio of the two is 3:7, the mean value of seedling emergence rate is 90.9%.Illustrate that seedling medium composition of the present invention effectively can improve the emergence rate of seedling.
The different cultivation base stock of table 7 and different component proportioning are on the impact (after planting 15d) of seedling emergence rate
Process 1 2 3 4 5 6 7 8 9
Chuxiong emergence rate (%) 95.6 90.9 88.7 91.4 87.6 82.7 90.4 86.7 81.9
Xuanwei emergence rate (%) 95.9 85.8 89.3 94.0 94.9 94.9 93.6 86.0 87.9
Yanshan County's emergence rate (%) 95.7 96.1 95.7 95.7 95.1 95.7 95.7 95.7 95.3
Average emergence rate (%) 95.7 90.9 91.2 93.7 92.5 91.1 93.2 89.5 88.4
2. different substrate combination composition formulas is on the impact of seedling economical character
After planting 25d carries out the first time investigation of economical character and thinning is filled the gaps with seedlings.As shown in table 8,9,10,11, no matter be adopt the peat composed of rotten mosses, paddy soil or stone frame soil as cultivation base stock preparation base composition, as long as the burden control of acrylamide-acrylates crosslinking copolymerization thing colloid and cultivation base stock is in the scope set by the present invention, all nursery stage effectively can be controlled in 60 ~ 65d, and seedling is all good at the development condition of Different growth phases.The consumption of suitable raising acrylamide-acrylates crosslinking copolymerization thing colloid, is conducive to the water conservation, the fertilizer conservation characteristic that improve base composition, is more conducive to the growth of seedling.In addition, with paddy soil and stone frame soil phase ratio, when the peat composed of rotten mosses and acrylamide-acrylates crosslinking copolymerization thing colloid mixture, in base composition, the retention ratio of nutrient is higher, and ratio is coordinated more, to the obvious facilitation of having grown of seedling.
The different cultivation base stock of table 8 and different component proportioning are on the impact (after planting 35d) of seedling economical character
The different cultivation base stock of table 9 and different component proportioning are on the impact (after planting 45d) of seedling economical character
The different cultivation base stock of table 10 and different component proportioning are on the impact (after planting 60d) of seedling economical character
The different cultivation base stock of table 11 and the impact (become seedling stage) of different component proportioning on seedling economical character
3. different substrate combination composition formulas is on the impact of transplanting rear seedling death rate
As shown in table 12,13,14,15,5d after transplanting, all there is not the phenomenon of seedling death in each experiment place, in the afternoon 5 carry out observation statistics time, adopt the base composition of different cultivation base stock, different ratio carry out floating seedlings process and transplant after seedling there is not the Misuzu that withers yet.Illustrate that seedling medium composition of the present invention has good water conservation, drought resisting effect, can ensure in the head 5d of seedling after transplanting and water without the need to carrying out drought resisting.
10d after transplanting, the seedling lethality of each experiment place overwhelming majority process is 0, slightly will be better than paddy soil and stone frame is native using the peat composed of rotten mosses as cultivation base stock with the drought resistance of the base composition of acrylamide-acrylates crosslinking copolymerization thing colloid mixture.Illustrate that seedling medium composition of the present invention can improve the continuous drought-resistant ability of seedling, effectively alleviate the drought resisting intensity in kind of transplantation of seedlings process, be conducive to accelerating transplanting process.
15d after transplanting, all there is the Misuzu that withers in various degree, even dead phenomenon in the seedling of each experiment place different disposal.And different cultivation base stock and different component proportioning lead seedling Wei Misuzu, death rate affect significant difference.The consumption of suitable raising acrylamide-acrylates crosslinking copolymerization thing colloid, more be conducive to the maintenance of base composition to moisture, and the prolongation that base composition releases the water time is also conducive to nutrient in cultivation base stock by seedling Root Absorption, utilizes, thus be conducive to improving seedling transplanting survival rate.
The different cultivation base stock of table 12 and different component proportioning are on the impact (after transplanting 5d) of transplanting rear seedling death rate
The different cultivation base stock of table 13 and different component proportioning are on the impact (after transplanting 10d) of transplanting rear seedling death rate
The different cultivation base stock of table 14 and different component proportioning are on the impact (after transplanting 15d) of transplanting rear seedling death rate
The different cultivation base stock of table 15 and different component proportioning are on the impact (after transplanting 20d) of transplanting rear seedling death rate

Claims (5)

1. an efficient drought-resistant seedling medium composition, is characterized in that the component of described efficient drought-resistant seedling medium composition is acrylamide-2 ~ 4 parts, acrylates crosslinking copolymerization thing colloid by volume and cultivation base stock 6 ~ 8 parts; Described acrylamide-acrylates crosslinking copolymerization thing colloid be by acrylamide-acrylates crosslinking copolymerization thing and water formulated according to mass ratio 1:150 ~ 200, described cultivation base stock be the peat composed of rotten mosses, perlite, paddy soil, mudstone or stone frame soil; Described seedling medium composition can ensure in the head 5d of seedling after transplanting and water without the need to carrying out drought resisting.
2. efficient drought-resistant seedling medium composition as claimed in claim 1, is characterized in that the component of described efficient drought-resistant seedling medium composition is acrylamide-3 parts, acrylates crosslinking copolymerization thing colloid by volume and cultivation base stock 7 parts.
3. efficient drought-resistant seedling medium composition as claimed in claim 1, it is characterized in that described acrylamide-acrylates crosslinking copolymerization thing colloid be by acrylamide-acrylates crosslinking copolymerization thing and water formulated according to mass ratio 1:175.
4. efficient drought-resistant seedling medium composition as claimed in claim 1, is characterized in that comprising imbibition, mixture operation, specifically comprises:
A, imbibition: mixed according to mass ratio 1:150 ~ 200 with water by acrylamide-acrylates crosslinking copolymerization thing, after its abundant imbibition, obtain acrylamide-acrylates crosslinking copolymerization thing colloid;
B, mixture: acrylamide by volume-2 ~ 4 parts, acrylates crosslinking copolymerization thing colloid is fully mixed with cultivation base stock 6 ~ 8 parts.
5. efficient drought-resistant seedling medium composition as claimed in claim 1, is characterized in that the described application of efficient drought-resistant seedling medium composition in tobacco floating seed rearing system.
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CN106561231B (en) * 2016-10-24 2020-04-14 云南省烟草农业科学研究院 Method for drought-resistant transplanting of flue-cured tobacco by applying agricultural and forestry water-retaining agent
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