A kind of method for culturing seedlings of shallow water air quality grade
Technical field
The invention belongs to vegetable seeds seedling-raising technique field more particularly to a kind of method for culturing seedlings of shallow water air quality grade.
Background technique
Floatation tray seedling-raising technique is that foam raising tray floats on the nursery pond equipped with nutrient solution, and pallet is provided with base
Matter, vegetable seeds are directly broadcast in stromal surface.Shallow water tray seedling growth technology is that plastic seeding culturing pallet is put into educating equipped with nutrient solution
In Miao Chi, pallet is provided with matrix, and vegetable seeds is directly broadcast in stromal surface.Wet seedling-raising technique is that pallet or floating disc are hanged
Sky keeps matrix wet, to guarantee absorption of the root system of plantling to water, fertilizer, gas using water spray.Air-pruning seedling production is will to adopt
The plantling bottom-exposed cultivated with floatation tray nursery, shallow water tray seedling growth technology in air, keeps its bottom root system natural
It is withered, promote the seedling-raising technique of lateral root growth.
Matrix is largely under water before shallow water tray seedling growth, floating seedlings seedling, and humidity is big, and it is green that panel surface is easy length
Tongue fur especially influences tobacco seedling growth before the cross phase.Shallow water tray seedling growth technology, the direct contact chamber bottom of pallet, tray bottom and pond
Gap is smaller between bottom, and air circulation is less up and down for seedling medium, influences root system respiration and k-index growing space, is easy shape
At spiral root, root system aging is easily formed high seedling.Floating seedlings floating disc is immersed in nutrient solution always, seedling medium
Upper and lower air circulation is less.In the case where air circulation is less, root system development is influenced, especially lateral root number is less, also holds
Easily form high seedling.
Summary of the invention
In view of this, being mentioned the purpose of the present invention is to provide a kind of method for culturing seedlings of shallow water air quality grade using the present invention
The method of confession, obtained seedling are not in high seedling, are not in spiral root, moss quantity is few in entire seedling raising process.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical schemes:
The present invention provides a kind of method for culturing seedlings of shallow water air quality grade, comprising:
In nursery pond bottom screening lattice disk, raising tray is placed on grid disk, vegetable seeds is seeded in the nursery
In the hole of pallet, the hole of the raising tray is provided with seedling medium;
For the first time plus after nutrient solution, the liquid level of the nutrient solution is no more than the upper surface of raising tray, in seedling raising process,
After the liquid level of nutrient solution and the bottom of raising tray are detached from, need plus fertile or seedling wilting Shi Jiashui, the liquid level after adding water are more than
The bottom 0.5cm of raising tray.
Preferably, the vegetable seeds includes one or more of tobacco seed, vegetable seeds and flower seed.
Preferably, the depth of the nursery pond is 5~6cm.
Preferably, the bottom of the nursery pond and surrounding spread pond film.
Preferably, the distance of bottom of pond of the upper surface of the grid disk apart from nursery pond is 2~3cm.
Preferably, the mode of the sowing includes: that vegetable seeds is broadcast live on seedling medium surface or covers no more than 5mm
It buries.
Preferably, when the vegetable seeds is tobacco seed, before the grand cross phase of tobacco seedlings, the bottom of the raising tray
Portion is contacted with the liquid level of nutrient solution, and nutrient solution is added after the grand cross phase of tobacco seedlings, and the liquid level of nutrient solution is more than raising tray
Bottom 0.5cm.
Preferably, after the first time adds nutrient solution, after the matrix water suction in raising tray, the liquid level of nutrient solution is in nursery
At 0.8~1.2cm of bottom of pallet.
Preferably, the liquid level of the nutrient solution is at the bottom 1cm of raising tray.
The present invention provides a kind of method for culturing seedlings of shallow water air quality grade, comprising: in nursery pond bottom screening lattice disk, by nursery
Pallet is placed on grid disk, vegetable seeds is seeded in the hole of the raising tray, in the hole of the raising tray
Equipped with seedling medium;For the first time plus after nutrient solution, the liquid level of the nutrient solution is no more than the upper surface of raising tray, in nursery
Cheng Zhong, when nutrient solution liquid level and raising tray bottom be detached from after, need plus fertilizer or seedling wilting Shi Jiashui, the liquid level after adding water
More than the bottom 0.5cm of raising tray.The present invention keeps raising tray hanging, accelerates the circulation of raising tray bottom air, promotes
Root system respiration is not easy to form high seedling;It is cut off the water supply using intermittence, reduces stromal surface humidity, reduced green paint quantity, increase simultaneously
Add matrix gas permeability, promotes Medium Culture root system respiration;The intermittence of root system is cut off the water supply, since it has hydrotropism, to fertilizer, simultaneously
Will not as shallow water tray seedling growth tray bottom by reason of heavy pressure k-index develop, so being not easy to form spiral root, root system
Do not allow easy to aging yet.
Detailed description of the invention
Fig. 1 is the schematic cross-section of nursery pond, wherein 1 is nursery pond, 2 be pond film, and 3 be raising tray, and 4 be grid disk, 5
For nutrient solution.
Specific embodiment
The present invention provides a kind of method for culturing seedlings of shallow water air quality grade, comprising: in nursery pond bottom screening lattice disk, by nursery
Pallet is placed on grid disk, vegetable seeds is seeded in the hole of the raising tray, in the hole of the raising tray
Equipped with seedling medium;For the first time plus after nutrient solution, the liquid level of the nutrient solution is no more than the upper surface of raising tray, in nursery
Cheng Zhong, when nutrient solution liquid level and raising tray bottom be detached from after, need plus fertilizer or seedling wilting Shi Jiashui, the liquid level after adding water
More than the bottom 0.5cm of raising tray.
Raising tray is placed on grid disk by the present invention in nursery pond bottom screening lattice disk, and vegetable seeds is seeded in institute
It states in the hole of raising tray, the hole of the raising tray is provided with seedling medium.
In the present invention, the depth of the nursery pond is preferably 5~6cm, length and width of the present invention to the nursery pond
Degree is not particularly limited, because ground is suitable for.The present invention preferably spreads pond film in the bottom of nursery pond and surrounding, and the present invention is to described
The laying method of pond film is not particularly limited, using conventional laying method, type and source of the present invention to the pond film
It is not particularly limited, using conventional pond film.
Grid disk is added in nursery pond bottom by the present invention, and the distance of bottom of pond of the upper surface of the grid disk apart from nursery pond is excellent
It is selected as 2~3cm.The present invention is not particularly limited the setting of grid disk, can hold raising tray, the grid disk
Diameter is preferably 5~8mm.The quantity and modes of emplacement that the present invention places the raising tray on grid disk do not have special limit
It is fixed, using routine, one layer of raising tray is placed preferably on grid disk.
Vegetable seeds is seeded in the hole of the raising tray by the present invention, and the hole of the raising tray, which is provided with, educates
Seedling matrix.
In the present invention, the vegetable seeds preferably include one of tobacco seed, vegetable seeds and flower seed or
It is several.The present invention is not particularly limited the type of the vegetable seeds and flower seed, using routine.In the present invention
In, when the diameter of the vegetable seeds is less than 10mm, the mode of the sowing is preferably included: vegetable seeds is broadcast live in nursery
Stromal surface is no more than 5mm burial.The present invention is not particularly limited the raising tray, using routine.The present invention
The amount for the seedling medium placed in the hole of the raising tray is not particularly limited, is using the amount that conventional seedbed system is placed
It can.The present invention is not particularly limited the type of the seedling medium and source, using routine.
For the present invention after first time plus nutrient solution, the liquid level of the nutrient solution is no more than the upper surface of raising tray, is educating
During seedling, when nutrient solution liquid level and raising tray bottom be detached from after, need plus fertilizer or seedling wilting Shi Jiashui, after adding water
Liquid level is more than the bottom 0.5cm of raising tray.
In the present invention, after the first time adds nutrient solution, after the matrix water suction in raising tray, the liquid level of nutrient solution is excellent
It is selected at 0.8~1.2cm of bottom of raising tray, more preferably at 1cm.
The present invention is not particularly limited the nutrient solution, it is preferred to use N-P-K content than the compound fertilizer for 1:0.5:1,
Nitrogenous fertilizer concentration is preferably 50~100mg/Kg in nutrient solution before 30 days, and nitrogenous fertilizer concentration is preferably 100 in nutrient solution after 30 days
~200mg/Kg.
The present invention to the type of the fertilizer and plus fertilizer amount be not particularly limited, the type of the fertilizer used according to conventional seedbed system and
Add the amount of fertilizer.
In the present invention, when the vegetable seeds is preferably tobacco seed, before the grand cross phase of tobacco seedlings, the nursery
The bottom of pallet is contacted with the liquid level of nutrient solution, and nutrient solution is added after the grand cross phase of tobacco seedlings, and the liquid level of nutrient solution is more than to educate
The bottom 0.5cm of seedling pallet.
In the present invention, the nursery pond schematic cross-section as shown in Figure 1, wherein 1 be nursery pond, 2 be pond film, 3 are
Raising tray, 4 be grid disk, and 5 be nutrient solution.
Technical solution provided by the invention is described in detail below with reference to embodiment, but they cannot be understood
For limiting the scope of the present invention.
Embodiment 1
Seedling medium, nursery fertilizer, tobacco coating seed are identical as control.It tests and is sowed on December 5th, 2018, test sample
Kind Guangdong cigarette 97, seedling stage on 2 20th, 2019.
Add a grid disk at nursery pond bottom, raising tray is placed on grid disk, tobacco seed live streaming is in pallet sky
Stromal surface in cave, nursery pond depth 5cm, bottom of pond and surrounding place mat pond film;For the first time plus after nutrient solution, the liquid level of nutrient solution is not
More than the upper surface of raising tray, tray bottom depth of water 1cm after matrix water suction.Grand cross phase forestock pan bottom and battalion in tobacco
Nutrient solution face contact, after the grand cross phase plus nutrition liquid level is more than the 0.5cm of tray bottom, even if nutrition liquid level and pallet later
Bottom is detached from, and tobacco seedlings do not need to add fertilizer or wilting phenomenon occur that water is not added, if you need to add water to be added to the 0.5cm more than tray bottom.
The preparation of nutrient solution are as follows: by N-P-K content than for the compound fertilizer of 1:0.5:1 it is soluble in water so that nitrogenous fertilizer concentration in nutrient solution
150mg/Kg.
Investigation method:
1, grand cross phase moss is investigated
Three disks are randomly selected, all tobacco seedlings are pulled out, each disk randomly selects 10 holes, estimates the face of moss in each disk hole
Product, then averages, then obtain moss density divided by disk hole area;Pallet is taken out outside pond, appropriate dry cause moss surface
Skin is rolled up, complete ten superposition vernier caliper measurement thickness is thrown off, then obtains moss depth divided by 10;Above ten saturations are inhaled
Water weighing, obtains unit area weight in wet base divided by ten hole areas, weighs after drying, and it is dry to obtain unit area divided by ten hole areas
Weight.
2, seedling stage seedling quality is investigated
The investigation of seedling stage seedling quality, stem height, stalk diameter, level-one lateral root, second level lateral root are done according to tobacco business regulation
Method executes, and the investigation of tobacco seedlings planting percent, which is taken, randomly selects three disk tobacco seedlings, removes high seedling, crosses seedling, and residue is suitble to transplanting tobacco seedlings,
Divided by three disk hole numbers.
Test result:
1. grand cross phase moss is investigated
The investigation of 1 grand cross phase moss of table
Test result shows the shallow water air-pruning seedling production grand cross phase, and moss density is minimum, never forms volume skin;
Opposite floating seedlings, shallow water tray seedling growth moss density, thickness, unit area weight in wet base, the equal notable difference of unit area dry weight.
2. seedling stage seedling quality is investigated
2 seedling seedling quality of table
Test result shows the tobacco seedlings that the present invention cultivates, stem high 4.85cm, 0.82cm shorter than shallow water tray seedling growth, than drift
The floating short 1.3cm of nursery;Stalk diameter 0.35cm, it is little with shallow water tray seedling growth cultivation tobacco seedlings difference, cigarette is cultivated than floating seedlings
The big 0.03cm of seedling.
The tobacco seedlings that the present invention cultivates, level-one lateral root number increases by 14.9%, two compared with shallow water tray seedling growth root quantity
Grade lateral root increases by 5.46%, and root system color is vivid, does not have spiral root;Compared with floating seedlings, level-one lateral root number increases
37.8%, second level lateral root number increases by 9.28%.
The tobacco seedlings that the present invention cultivates, planting percent 98.5%, tobacco seedlings neat and consistent;Shallow water tray seedling growth planting percent 92.3%,
It is more to cross seedling;Floating seedlings planting percent 89.4%, high seedling large percentage.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.