CN109516878A - Chinese fir special fertilizer and preparation method thereof - Google Patents

Chinese fir special fertilizer and preparation method thereof Download PDF

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Publication number
CN109516878A
CN109516878A CN201811628944.8A CN201811628944A CN109516878A CN 109516878 A CN109516878 A CN 109516878A CN 201811628944 A CN201811628944 A CN 201811628944A CN 109516878 A CN109516878 A CN 109516878A
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fertilizer
fir
tree
forest
branch
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王会利
唐健
潘波
宋贤冲
石媛媛
邓小军
覃祚玉
曹继钊
覃其云
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Guangxi Zhuang Autonomous Region Forestry Research Institute
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Guangxi Zhuang Autonomous Region Forestry Research Institute
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    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05FORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F1/00Fertilisers made from animal corpses, or parts thereof
    • C05F1/005Fertilisers made from animal corpses, or parts thereof from meat-wastes or from other wastes of animal origin, e.g. skins, hair, hoofs, feathers, blood
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01CPLANTING; SOWING; FERTILISING
    • A01C21/00Methods of fertilising, sowing or planting
    • A01C21/007Determining fertilization requirements
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05GMIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05GMIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C05G3/80Soil conditioners
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05GMIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G5/00Fertilisers characterised by their form
    • C05G5/30Layered or coated, e.g. dust-preventing coatings

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Soil Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Environmental Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fertilizers (AREA)

Abstract

The invention discloses a kind of Chinese fir special fertilizer and preparation method thereof, the fertilizer includes following raw material: N fertilizer, P fertilizer, K fertilizer, Fe fertilizer, Zn fertilizer, B fertilizer, auxiliary material, membrane material;Wherein, auxiliary material includes following raw material: konjac glucomannan, cicada slough, honeycomb, fresh-water turtle shell, S- abscisic acid, compound sodium nitrophenolate;Membrane material includes following raw material: medical stone, konjac glucomannan, polyacrylic acid-acrylamide, hydroxypropyl methyl cellulose, hydroxypropyl methylcellulose phthalate, polyvinyl alcohol, polyhexamethylene guanide.The accurate demand for calculating Chinese fir to N, P, K, Fe, Zn, B by setting alimentation entirely, is then prepared to Chinese fir special fertilizer again.The present invention has fully considered the nutritional need of Chinese fir and has combined the multinomial factor such as soil nutrient utilization rate, utilization rate of fertilizer, to which the special fertilizer of preparation not only can satisfy Chinese fir growth demand, also there is certain slow releasing function, fertilizer is avoided to waste, shorten Chinese fir growth cycle.Fertilizer of the invention can make Chinese fir woods averagely improve 31.8% or more yield, reduce costs.

Description

Fertilizer special for fir and preparation method thereof
[ technical field ] A method for producing a semiconductor device
The invention belongs to the technical field of fertilizer preparation, and particularly relates to a special fertilizer for cedars and a preparation method thereof.
[ background of the invention ]
The fir is an important fast-growing timber tree species in south China, has the characteristics of fast growth, high yield and wide application, and the finished fir has the advantages of straight and round trunk shape, straight wood grains, light and tough material, applicable strength, fragrant smell, insect resistance and corrosion resistance, and is widely applied to the fields of buildings, bridges, shipbuilding, furniture and the like. The Chinese fir trees have different requirements for nutrients in different growth periods, the problems of unscientific fertilization and the like generally exist in the planting process of the Chinese fir trees at present, the Chinese fir trees cannot be fertilized according to the growth characteristics of the Chinese fir trees as required, and the problems of slow growth of the Chinese fir trees, fertilizer waste and the like are caused.
[ summary of the invention ]
The invention provides a special fertilizer for cedars and a preparation method thereof, and aims to solve the problems that the existing fertilizer for the cedars is unscientific and can not be applied according to needs according to the needs of the cedars for nutrients in the growth period.
The special fertilizer for the cedar comprises the following raw materials: n fertilizer, P fertilizer, K fertilizer, Fe fertilizer, Zn fertilizer, B fertilizer, auxiliary materials and membrane materials; wherein,
the auxiliary materials comprise the following raw materials: konjac gum, periostracum Cicadae, nidus Vespae, turtle shell, S-abscisic acid, and sodium nitrophenolate;
the membrane material comprises the following raw materials: medical stone, konjac glucomannan, polyacrylic acid-acrylamide, hydroxypropyl methyl cellulose phthalate, polyvinyl alcohol and polyhexamethylene guanidine.
The dosage of the auxiliary materials is 0.08-0.3 time of the sum of the weights of the N fertilizer, the P fertilizer, the K fertilizer, the Fe fertilizer, the Zn fertilizer and the B fertilizer.
The dosage of the membrane material is 0.1-0.2 times of the sum of the weight of the N fertilizer, the P fertilizer, the K fertilizer, the Fe fertilizer, the Zn fertilizer and the B fertilizer.
The use amount of the elements N, P, K, Fe, Zn and B in the special fertilizer for the cedar is determined by the following method:
s1: selecting a survey sample prescription from a fir forest to be fertilized, measuring the breast diameter and the tree height of a fir tree in the sample prescription, calculating the average breast diameter and the tree height of the fir tree, selecting standard trees for felling by taking the standard trees as a standard, segmenting every 2m by a Monsic hierarchical cutting method, dividing four organs of a tree root, a trunk, a branch and a leaf, respectively weighing fresh weights, selecting representative samples from the four organs, respectively weighing the fresh weights, respectively drying to constant weights, then weighing the dry weights, and finally calculating the total dry weight of the biomass of the four organs of the standard fir tree;
s2: respectively taking representative samples of the four organs of the root, the trunk, the branch and the leaf in the step S1, respectively weighing the fresh weights, and respectively measuring the contents of all N, all P, all K, all Fe, all Zn and all B of the four organs of the root, the trunk, the branch and the leaf;
s3: measuring the contents of N, P, K, Fe, Zn and B elements in the fir forest soil to be fertilized, and calculating the utilization rates of N, P, K, Fe, Zn and B in the soil;
s4: respectively calculating the demand of the fir to the N, P, K, Fe, Zn and B elements by using a formula, wherein the formula is
In the formula:
y is the demand of the fir tree on N (P, K, Fe, Z or B), kg/hm2
WRoot of herbaceous plantIs the dry weight of the biomass of the tree root, t/hm2
XRoot of herbaceous plantThe content of the root N (P, K, Fe, Z or B) is g/kg;
Wdry matterDry weight of the biomass as a trunk, t/hm2
XDry matterThe content of the stem N (P, K, Fe, Z or B) is g/kg;
Wbranch of treeIs the dry weight of branch biomass, t/hm2
XBranch of treeThe content of branch N (P, K, Fe, Z or B) is g/kg;
Wleaf of Chinese characterIs the dry weight of the biomass of the leaves, t/hm2
XLeaf of Chinese characterThe content of N (P, K, Fe, Z or B) in the leaves is g/kg;
c is the content of N (P, K, Fe, Z or B) in soil, mg/kg;
d is soil volume weight, g/cm3
H is the root depth, cm;
a is the coverage of forest trees (the crown width ratio of the fir trees);
t is the utilization rate of N (P, K, Fe, Z or B) in soil,%;
f is the utilization rate of N (P, K, Fe, Z or B) in the fertilizer, and percent.
The N in the step S2 is determined to be total nitrogen, and the method adopts the determination of the total nitrogen of forest plants and forest dead branches and deciduous leaf layers; the determination of P, K, Fe and Zn is total phosphorus, total potassium, total iron and total zinc, and the determination of forest plants and forest dead branch and deciduous leaf layers is adopted; the determination of B is total boron, and the 'determination of total boron of forest plants and forest dry branches and deciduous leaf layers' is adopted.
The total N in the step S2 is measured by a distillation method of forest plant and forest dry branch and deciduous leaf layer total nitrogen.
The determination of total P, total K, total Fe and total Zn in step S2 is performed by molybdenum-antimony colorimetric method, flame photometry and atomic absorption spectrophotometry, which are "determination of total silicon, iron, aluminum, calcium, magnesium, potassium, sodium, phosphorus, sulfur, manganese, copper and zinc in forest plant and forest dead branch and deciduous leaf layer".
The determination of the total B in the step S2 adopts a dry ashing-azomethine colorimetric method of determination of total boron in forest plant and forest dead branch deciduous leaf layers.
The invention also provides a preparation method of the special fertilizer for the fir, which comprises the following steps:
s5: respectively calculating the demand of N (P, K, Fe, Zn and B) in the special fertilizer for the fir trees according to the following formula;
in the formula:
y is the demand of the fir tree on N (P, K, Fe, Zn, B), kg/hm2
WRoot of herbaceous plantIs the dry weight of the biomass of the tree root, t/hm2
XRoot of herbaceous plantThe content of N (P, K, Fe, Zn and B) in the tree root is g/kg;
Wdry matterDry weight of the biomass as a trunk, t/hm2
XDry matterThe content of the trunk N (P, K, Fe, Zn, B) is g/kg;
Wbranch of treeIs the dry weight of branch biomass, t/hm2
XBranch of treeThe content of N (P, K, Fe, Zn and B) in the branches is g/kg;
Wleaf of Chinese characterIs the dry weight of the biomass of the leaves, t/hm2
XLeaf of Chinese characterThe content of N (P, K, Fe, Zn and B) in the leaves is g/kg;
c is the content of N (P, K, Fe, Zn and B) in soil, mg/kg;
d is soil volume weight, g/cm3
H is the root depth, cm;
a is the coverage of forest trees (the crown width ratio of the fir trees);
t is the utilization rate of N (P, K, Fe, Zn and B) in soil,%;
f is the utilization rate of N (P, K, Fe, Zn and B) in the fertilizer,%;
s6: calculating the demand of the fir tree for N, P, K, Fe, Zn and B according to S5, and calculating N fertilizer (calculated as N) and P fertilizer (calculated as P)2O5Measured), K fertilizer (in K)2Calculated as O), Fe fertilizer (calculated as Fe), Zn fertilizer (calculated as Zn) and B fertilizer (calculated as B);
s7: weighing adjuvants, pulverizing periostracum Cicadae, nidus Vespae, and carapax Trionycis, and mixing with konjac gum, S-abscisic acid, and compound sodium nitrophenolate to obtain adjuvant powder; weighing the use amounts of the N fertilizer, the P fertilizer, the K fertilizer, the Fe fertilizer, the Zn fertilizer and the B fertilizer calculated in the step S5, mixing the use amounts with the auxiliary material powder, uniformly mixing, and extruding for material preparation to obtain fertilizer particles;
s8: weighing membrane materials, pulverizing Maifanitum, mixing with konjac glucomannan, polyacrylic acid-acrylamide, hydroxypropyl methylcellulose phthalate, polyvinyl alcohol, and polyhexamethylene guanidine, adding water, and stirring;
s9: and (4) feeding the fertilizer granules obtained in the step S7 into a coating machine, coating the fertilizer granules by using the membrane material treated in the step S8, uniformly mixing the coated fertilizer granules and the membrane material, and drying to obtain the special fertilizer for the fir trees.
The diameter of the fertilizer granules in the step S7 is 3-10 mm.
The weight of the water added in the step S8 is 4-12 times of the weight of the membrane material.
The invention has the advantages that: the special fertilizer for the cedar fully considers the nutritional requirements of the cedar and combines multiple factors such as the utilization rate of soil nutrients and the utilization rate of fertilizers, so that the prepared special fertilizer can meet the growth requirements of the cedar, avoid fertilizer waste and shorten the growth period. The film material uses konjac glucomannan, medical stone and other raw materials to improve the film forming performance through the effects of crosslinking and the like, and the stability of the film material can be ensured by the pH bias acidity. The medical stone in the membrane material has the porous property, moisture can enter the fertilizer through the pores after the membrane material is used, and konjac glucomannan contained in the fertilizer granules has excellent water absorption, so that the konjac glucomannan can prop and crack the fertilizer granules after the konjac glucomannan absorbs water and swells, and the release of nutrient substances is facilitated to realize a slow release effect. The water absorption effect of the konjac gum can also meet the growth habit of the cunninghamia lanceolata which is favorable for moisture and can improve the growth speed after long-term use. The invention also has certain functions of resisting red blight, leaf blight, yellowing disease and the like.
The special fertilizer for the cedar prepared by the method can comprehensively meet the accurate requirement of the growth and development of the cedar on a large amount of nutrients in each stage, so that the yield of the cedar forest is improved by over 31.8 percent on average, the cost is reduced, and the economic benefit, the social benefit and the ecological benefit are more remarkable.
[ detailed description ] embodiments
In order to facilitate a better understanding of the invention, the following examples are given to illustrate, but not to limit the scope of the invention.
Example 1
Because the growth period of the fir is long, a space time changing method is adopted, fertilizer efficiency tests of 1-age and 9-age fir are simultaneously carried out, and the proportion of the fertilizer used by the 1-age fir is N: P2O5:K2O:Zn:B=The proportion of fertilizer used for 7:13:10:0.17:0.05 and 9-age fir trees is N: P2O5:K2Zn, B is 13:10:12:0.11:0.07, the fertilizers are continuously applied for 2 years, the application time is 3-6 months per year, the fertilizers are applied for 1 time per year, and the fertilizing amount of the fir trees at 1 age and 9 ages is 750kg/hm each year2And 1250kg/hm2
The special fertilizer for the cedar comprises the following raw materials: n fertilizer, P fertilizer, K fertilizer, Fe fertilizer, Zn fertilizer, B fertilizer, auxiliary materials and membrane materials; wherein,
the auxiliary materials comprise the following raw materials: konjac gum, periostracum Cicadae, nidus Vespae, turtle shell, S-abscisic acid, and sodium nitrophenolate;
the membrane material comprises the following raw materials: medical stone, konjac glucomannan, polyacrylic acid-acrylamide, hydroxypropyl methyl cellulose phthalate, polyvinyl alcohol and polyhexamethylene guanidine.
The dosage of the auxiliary materials is 0.08-0.3 time of the sum of the weight of the N fertilizer, the P fertilizer, the K fertilizer, the Fe fertilizer, the Zn fertilizer and the B fertilizer.
The dosage of the film material is 0.1-0.2 times of the sum of the weight of the N fertilizer, the P fertilizer, the K fertilizer, the Fe fertilizer, the Zn fertilizer and the B fertilizer.
The use amount of the elements N, P, K, Fe, Zn and B in the special fertilizer for the cedar is determined by the following method:
s1: selecting a survey sample prescription from a fir forest to be fertilized, measuring the breast diameter and the tree height of a fir tree in the sample prescription, calculating the average breast diameter and the tree height of the fir tree, selecting standard trees for felling by taking the standard trees as a standard, segmenting every 2m by a Monsic hierarchical cutting method, dividing four organs of a tree root, a trunk, a branch and a leaf, respectively weighing fresh weights, selecting representative samples from the four organs, respectively weighing the fresh weights, respectively drying to constant weights, then weighing the dry weights, and finally calculating the total dry weight of the biomass of the four organs of the standard fir tree;
s2: respectively taking representative samples of the four organs of the root, the trunk, the branch and the leaf in the step S1, respectively weighing the fresh weights, and respectively measuring the contents of all N, all P, all K, all Fe, all Zn and all B of the four organs of the root, the trunk, the branch and the leaf;
s3: measuring the contents of N, P, K, Fe, Zn and B elements in the fir forest soil to be fertilized, and calculating the utilization rates of N, P, K, Fe, Zn and B in the soil;
s4: respectively calculating the demand of the fir to the N, P, K, Fe, Zn and B elements by using a formula, wherein the formula is
In the formula:
y is the demand of the fir tree on N (P, K, Fe, Zn or B), kg/hm2
WRoot of herbaceous plantIs the dry weight of the biomass of the tree root, t/hm2
XRoot of herbaceous plantThe content of N (P, K, Fe, Zn or B) in the tree root is g/kg;
Wdry matterDry weight of the biomass as a trunk, t/hm2
XDry matterThe content of the main stem N (P, K, Fe, Zn or B) is g/kg;
Wbranch of treeIs the dry weight of branch biomass, t/hm2
XBranch of treeThe content of N (P, K, Fe, Zn or B) in the branches is g/kg;
Wleaf of Chinese characterIs the dry weight of the biomass of the leaves, t/hm2
XLeaf of Chinese characterThe content of N (P, K, Fe, Zn or B) in the leaves is g/kg;
c is the content of N (P, K, Fe, Zn or B) in the soil, mg/kg;
d is soil volume weight, g/cm3
H is the root depth, cm;
a is the coverage of forest trees (the crown width ratio of the fir trees);
t is the utilization rate of N (P, K, Fe, Zn or B) in soil,%;
f is the utilization rate of N (P, K, Fe, Zn or B) in the fertilizer, and percent.
The N in the step S2 is determined to be total nitrogen, and the method adopts the determination of the total nitrogen of forest plants and forest dead branches and deciduous leaf layers; the determination of P, K, Fe and Zn is total phosphorus, total potassium, total iron and total zinc, and the determination of forest plants and forest dead branch and deciduous leaf layers is adopted; the determination of B is total boron, and the 'determination of total boron of forest plants and forest dry branches and deciduous leaf layers' is adopted.
The total N in the step S2 is measured by a distillation method of "measurement of total nitrogen in forest plant and forest dead branch and deciduous leaf layer".
The determination of total P, total K, total Fe and total Zn in step S2 respectively adopts the mo-sb colorimetric method, the flame photometry and the atomic absorption spectrophotometry of "determination of total silicon, iron, aluminum, calcium, magnesium, potassium, sodium, phosphorus, sulfur, manganese, copper and zinc of forest plants and forest dead branch and deciduous leaf layers".
The determination of the total B in the step S2 adopts a dry ashing-azomethine colorimetric method of determination of total boron in forest plant and forest dead branch deciduous leaf layers.
The invention also provides a preparation method of the special fertilizer for the fir, which comprises the following steps:
s5: respectively calculating the demand of N (P, K, Fe, Zn and B) in the special fertilizer for the fir trees according to the following formula;
in the formula:
y isThe demand of the fir tree on N (P, K, Fe, Zn and B), kg/hm2
WRoot of herbaceous plantIs the dry weight of the biomass of the tree root, t/hm2
XRoot of herbaceous plantThe content of N (P, K, Fe, Zn and B) in the tree root is g/kg;
Wdry matterDry weight of the biomass as a trunk, t/hm2
XDry matterThe content of the trunk N (P, K, Fe, Zn, B) is g/kg;
Wbranch of treeIs the dry weight of branch biomass, t/hm2
XBranch of treeThe content of N (P, K, Fe, Zn and B) in the branches is g/kg;
Wleaf of Chinese characterIs the dry weight of the biomass of the leaves, t/hm2
XLeaf of Chinese characterThe content of N (P, K, Fe, Zn and B) in the leaves is g/kg;
c is the content of N (P, K, Fe, Zn and B) in soil, mg/kg;
d is soil volume weight, g/cm3
H is the root depth, cm;
a is the coverage of forest trees (the crown width ratio of the fir trees);
t is the utilization rate of N (P, K, Fe, Zn and B) in soil,%;
f is the utilization rate of N (P, K, Fe, Zn and B) in the fertilizer,%;
s6: calculating the demand of the fir tree for N, P, K, Fe, Zn and B according to S5, and calculating N fertilizer (calculated as N) and P fertilizer (calculated as P)2O5Measured), K fertilizer (in K)2Calculated as O), Fe fertilizer (calculated as Fe), Zn fertilizer (calculated as Zn) and B fertilizer (calculated as B);
s7: weighing adjuvants, pulverizing periostracum Cicadae, nidus Vespae, and carapax Trionycis, and mixing with konjac gum, S-abscisic acid, and compound sodium nitrophenolate to obtain adjuvant powder; weighing the use amounts of the N fertilizer, the P fertilizer, the K fertilizer, the Fe fertilizer, the Zn fertilizer and the B fertilizer calculated in the step S5, mixing the use amounts with the auxiliary material powder, uniformly mixing, and extruding for material preparation to obtain fertilizer particles;
s8: weighing membrane materials, pulverizing Maifanitum, mixing with konjac glucomannan, polyacrylic acid-acrylamide, hydroxypropyl methylcellulose phthalate, polyvinyl alcohol, and polyhexamethylene guanidine, adding water, and stirring;
s9: and (4) feeding the fertilizer granules obtained in the step S7 into a coating machine, coating the fertilizer granules by using the membrane material treated in the step S8, uniformly mixing the coated fertilizer granules and the membrane material, and drying to obtain the special fertilizer for the fir trees.
The diameter of the fertilizer granules in the step S7 is 10 mm.
The weight of water added in step S8 was 12 times the weight of the membrane material.
Comparative example 1
The proportion of the common compound fertilizer sold in the market is N to P2O5:K2O15: 15:15, the fertilizer application time, the number of applications and the amount of fertilizers applied were the same as in example 1.
Selecting 1-year and 9-year fir forest trees as test sample plots in forest farms in Tian-Ny county, wherein the 1-year and 9-year fir forest farms are strong in growth and basically the same in growth, and measuring to obtain the China fir forest trees with the 1-year forest age of 1.15, the root depth of 37cm, the forest coverage (the crown-width ratio of China fir trees) of 0.2, the N content of 138.8mg/kg in soil, the P content of 0.8mg/kg in soil, the K content of 59.7mg/kg in soil, the Fe content of 12.98mg/kg in soil, the Zn content of 0.41mg/kg in soil, the B content of 0.15mg/kg in soil, the N utilization rate of 32%, the P utilization rate of 19%, the K utilization rate of 36%, the Fe utilization rate of 10%, the Zn utilization rate of 8%, the B utilization rate of 16%, and the N utilization rate of 35% in fertilizer, The utilization rate of P element in the fertilizer is 22%, the utilization rate of K element in the fertilizer is 47%, the utilization rate of Fe element in the fertilizer is 5%, the utilization rate of Zn element in the fertilizer is 2% and the utilization rate of B element in the fertilizer is 8%. The soil capacity of a forest land of 9-year-old fir trees is 1.10, the root depth is 124cm, the tree coverage (the crown width ratio of the fir trees) is 0.7, the N content in the soil is 111.4mg/kg, the P content in the soil is 1.5mg/kg, the K content in the soil is 38.6mg/kg, the Fe content in the soil is 45.78mg/kg, the Zn content in the soil is 1.85mg/kg, the B content in the soil is 0.19mg/kg, the utilization rate of the N in the soil is 32%, the utilization rate of the P in the soil is 20%, the utilization rate of the K in the soil is 35%, the utilization rate of the Fe in the soil is 10%, the utilization rate of the Zn in the soil is 8%, the utilization rate of the B in the soil is 16%, the utilization rate of the N in the fertilizer is 35%, the utilization rate of the P in the fertilizer is 22%, the utilization rate of the K in the fertilizer is 47%, and the utilization rate of the, The utilization rate of Zn element in the fertilizer is 2 percent, and the utilization rate of B element in the fertilizer is 8 percent.
In a test sample plot, 3 survey samples are randomly selected, the chest diameter and the tree height of the fir tree are measured by a girdling ruler and a height measuring instrument for each survey sample (20m multiplied by 20m), 1 fir tree with the chest diameter and the tree height meeting the measured mean value is selected as a standard tree and fell, a Monsic hierarchical cutting method is adopted, each 2m is a section, and the fresh weight of each organ of the whole tree body is weighed according to the tree root (including the main root and the lateral root), the trunk, the branch (including the main branch and the lateral branch) and the leaf. Weighing fresh weight of each organ by taking a small amount of representative samples respectively, drying to constant weight, weighing dry weight, calculating the moisture content of each organ, and finally calculating the total dry weight of biomass of each organ of the standard wood.
The root, trunk, leaf and other organs of the fir are measured by using a whole-tree nutrition method: the total N is determined by a distillation method according to a standard LY/T1269-1999 determination of total nitrogen of forest plant and forest dead branch deciduous leaf layer; the total K, the total Fe and the total Zn are determined by adopting nitric acid-perchloric acid digestion and an atomic absorption spectrophotometry according to a standard LY/T1270-1999 determination of total silicon, iron, aluminum, calcium, magnesium, potassium, sodium, phosphorus, sulfur, manganese, copper and zinc of forest plant and forest dead branch deciduous leaf layer; the total P is digested by nitric acid-perchloric acid, and is measured by a molybdenum-antimony colorimetric method; the total B is determined by a dry ashing-azomethine colorimetric method according to a standard LY/T1273-1999 determination of total boron in dead branches and deciduous layers of forest plants. The measurement results are shown in tables 1 and 2.
TABLE 1 determination of nutrient element content in each organ of 1 year old fir by whole tree nutrition method
TABLE 2 determination of nutrient element content in organs of 9-year-old fir by whole tree nutrition method
The following calculation results: the fertilizer used by the fir trees of 1 age has the proportion of N to P2O5:K2Zn, B, 7, 13, 10, 0.17, 0.05, wherein the proportion of the fertilizer used by the fir trees of 9 ages is N, P2O5:K2O:Zn:B=13:10:12:0.11:0.07。
Selecting fir forest lands with strong growth and basically same growth vigor at 1-year tree age and 9-year tree age in a test sample plot, and selecting 400 fir trees for each tree age, wherein the fir trees are divided into 2 groups of 400 trees, and each group comprises 200 trees with 1-year tree age and 9-year tree age respectively. The fertilizers of the example 1 and the comparative example 1 are respectively used, other management and protection measures are the same, each tree age of the fir tree is continuously used for 2 years, the fertilizer is applied for 1 time in 3 months in the year, and the fertilizer application amount of the fir trees of 1 age and 9 ages is 750kg/hm per year2And 1250kg/hm2. And respectively counting the average tree height and the breast diameter of each group of fir trees every year in 3 continuous years.
Statistics data of fertilizing amount and growth condition of 31-year-old fir trees in table
Statistics data of fertilizing amount and growth condition of fir trees of 49 years in table
As can be seen from the above table, the tree height and breast diameter of example 1 are better than those of comparative example 1 when example 1 of the present invention is used as compared with comparative example 1 when a common fertilizer is used, and the growth amounts of fir trees of 1 age and 9 age after 2 years of continuous fertilization are respectively increased by 44.51% and 31.80%. Therefore, the fertilizer prepared by the invention has obvious effect on the growth of the fir trees.

Claims (10)

1. The special fertilizer for the cedar is characterized by comprising the following raw materials: n fertilizer, P fertilizer, K fertilizer, Fe fertilizer, Zn fertilizer, B fertilizer, auxiliary materials and membrane materials; wherein,
the auxiliary materials comprise the following raw materials: konjac gum, periostracum Cicadae, nidus Vespae, turtle shell, S-abscisic acid, and sodium nitrophenolate;
the membrane material comprises the following raw materials: medical stone, konjac glucomannan, polyacrylic acid-acrylamide, hydroxypropyl methyl cellulose phthalate, polyvinyl alcohol and polyhexamethylene guanidine.
2. The special fertilizer for fir trees according to claim 1, wherein the dosage of the auxiliary materials is 0.08-0.3 time of the sum of the weights of the N fertilizer, the P fertilizer, the K fertilizer, the Fe fertilizer, the Zn fertilizer and the B fertilizer.
3. The fertilizer special for cedar trees as claimed in claim 1, wherein the amount of the membrane material is 0.1-0.2 times of the sum of the weight of N fertilizer, P fertilizer, K fertilizer, Fe fertilizer, Zn fertilizer and B fertilizer.
4. The fertilizer special for cedar trees as claimed in claim 1, wherein the usage amount of N, P, K, Fe, Zn and B elements in the fertilizer special for cedar trees is determined by the following method:
s1: selecting a survey sample prescription from a fir forest to be fertilized, measuring the breast diameter and the tree height of a fir tree in the sample prescription, calculating the average breast diameter and the tree height of the fir tree, selecting standard trees for felling by taking the standard trees as a standard, segmenting every 2m by a Monsic hierarchical cutting method, dividing four organs of a tree root, a trunk, a branch and a leaf, respectively weighing fresh weights, selecting representative samples from the four organs, respectively weighing the fresh weights, respectively drying to constant weights, then weighing the dry weights, and finally calculating the total dry weight of the biomass of the four organs of the standard fir tree;
s2: respectively taking representative samples of the four organs of the root, the trunk, the branch and the leaf in the step S1, respectively weighing the fresh weights, and respectively measuring the contents of all N, all P, all K, all Fe, all Zn and all B of the four organs of the root, the trunk, the branch and the leaf;
s3: measuring the contents of N, P, K, Fe, Zn and B elements in the fir forest soil to be fertilized, and calculating the utilization rates of N, P, K, Fe, Zn and B in the soil;
s4: respectively calculating the demand of the fir to the N, P, K, Fe, Zn and B elements by using a formula, wherein the formula is
In the formula:
y is the demand of the fir tree on N (P, K, Fe, Zn, B), kg/hm2
WRoot of herbaceous plantIs the dry weight of the biomass of the tree root, t/hm2
XRoot of herbaceous plantThe content of N (P, K, Fe, Zn and B) in the tree root is g/kg;
Wdry matterDry weight of the biomass as a trunk, t/hm2
XDry matterThe content of the trunk N (P, K, Fe, Zn, B) is g/kg;
Wbranch of treeIs the dry weight of branch biomass, t/hm2
XBranch of treeThe content of N (P, K, Fe, Zn and B) in the branches is g/kg;
Wleaf of Chinese characterIs the dry weight of the biomass of the leaves, t/hm2
XLeaf of Chinese characterThe content of N (P, K, Fe, Zn and B) in the leaves is g/kg;
c is the content of N (P, K, Fe, Zn and B) in soil, mg/kg;
d is soil volume weight, g/cm3
H is the root depth, cm;
a is the coverage of forest trees (the crown width ratio of the fir trees);
t is the utilization rate of N (P, K, Fe, Zn and B) in soil,%;
f is the utilization rate of N (P, K, Fe, Zn and B) in the fertilizer, and percent.
5. The fertilizer special for cedar as claimed in claim 4, wherein N in step S2 is determined as total nitrogen, and the determination of total nitrogen of forest plant and forest dry branch and deciduous leaf layer is adopted; the determination of P, K, Fe and Zn is total phosphorus, total potassium, total iron and total zinc, and the determination of forest plants and forest dead branch and deciduous leaf layers is adopted; the determination of B is total boron, and the 'determination of total boron of forest plants and forest dry branches and deciduous leaf layers' is adopted.
6. The fertilizer special for cedar as claimed in claim 5, wherein the determination of total N in step S2 is carried out by distillation method of determination of total nitrogen in forest plant and forest dead branch and deciduous leaf layer.
7. The fertilizer special for cedar as claimed in claim 5, wherein the determination of all P, all K, all Fe and all Zn in step S2 is performed by Mo-Sb colorimetric method, flame photometry and atomic absorption spectrophotometry, which are "determination of all Si, Fe, Al, Ca, Mg, K, Na, P, S, Mn, Cu and Zn in forest plant and forest dry branch and deciduous leaf layer".
8. The fertilizer special for cedar trees as claimed in claim 5, wherein the determination of total B in step S2 is carried out by dry ashing-azomethine colorimetry of determination of total boron in forest plant and forest dead branch deciduous leaf layer.
9. The preparation method of the fertilizer special for the cedar as claimed in any one of claims 1 to 8, which comprises the following steps:
s5: respectively calculating the demand of N (P, K, Fe, Zn and B) in the special fertilizer for the fir trees according to the following formula;
in the formula:
y is the demand of the fir tree on N (P, K, Fe, Zn, B), kg/hm2
WRoot of herbaceous plantIs the dry weight of the biomass of the tree root, t/hm2
XRoot of herbaceous plantThe content of N (P, K, Fe, Zn and B) in the tree root is g/kg;
Wdry matterDry weight of the biomass as a trunk, t/hm2
XDry matterThe content of the trunk N (P, K, Fe, Zn, B) is g/kg;
Wbranch of treeIs the dry weight of branch biomass, t/hm2
XBranch of treeThe content of N (P, K, Fe, Zn and B) in the branches is g/kg;
Wleaf of Chinese characterIs the dry weight of the biomass of the leaves, t/hm2
XLeaf of Chinese characterThe content of N (P, K, Fe, Zn and B) in the leaves is g/kg;
c is the content of N (P, K, Fe, Zn and B) in soil, mg/kg;
d is soil volume weight, g/cm3
H is the root depth, cm;
a is the coverage of forest trees (the crown width ratio of the fir trees);
t is the utilization rate of N (P, K, Fe, Zn and B) in soil,%;
f is the utilization rate of N (P, K, Fe, Zn and B) in the fertilizer,%;
s6: calculating the demand of the fir tree for N, P, K, Fe, Zn and B according to S5, and calculating N fertilizer (calculated as N) and P fertilizer (calculated as P)2O5Measured), K fertilizer (in K)2Calculated as O), Fe fertilizer (calculated as Fe), Zn fertilizer (calculated as Zn) and B fertilizer (calculated as B);
s7: weighing adjuvants, pulverizing periostracum Cicadae, nidus Vespae, and carapax Trionycis, and mixing with konjac gum, S-abscisic acid, and compound sodium nitrophenolate to obtain adjuvant powder; weighing the use amounts of the N fertilizer, the P fertilizer, the K fertilizer, the Fe fertilizer, the Zn fertilizer and the B fertilizer calculated in the step S5, mixing the use amounts with the auxiliary material powder, uniformly mixing, and extruding for material preparation to obtain fertilizer particles;
s8: weighing membrane materials, pulverizing Maifanitum, mixing with konjac glucomannan, polyacrylic acid-acrylamide, hydroxypropyl methylcellulose phthalate, polyvinyl alcohol, and polyhexamethylene guanidine, adding water, and stirring;
s9: and (4) feeding the fertilizer granules obtained in the step S7 into a coating machine, coating the fertilizer granules by using the membrane material treated in the step S8, uniformly mixing the coated fertilizer granules and the membrane material, and drying to obtain the special fertilizer for the fir trees.
10. The fertilizer special for cedar trees as claimed in claim 9, wherein the fertilizer granules in step S7 have a diameter of 3-10 mm.
CN201811628944.8A 2018-12-28 2018-12-28 Chinese fir special fertilizer and preparation method thereof Pending CN109516878A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103927687A (en) * 2014-04-23 2014-07-16 广西力源宝科技有限公司 Intelligent fertilization system for China firs
CN105367241A (en) * 2015-11-26 2016-03-02 南宁市金沙壮畜牧养殖有限责任公司 Special controlled release fertilizer for mangoes and preparation method for fertilizer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103927687A (en) * 2014-04-23 2014-07-16 广西力源宝科技有限公司 Intelligent fertilization system for China firs
CN105367241A (en) * 2015-11-26 2016-03-02 南宁市金沙壮畜牧养殖有限责任公司 Special controlled release fertilizer for mangoes and preparation method for fertilizer

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