CN111183870A - Novel method for optimizing hybrid pine descending type fat collection - Google Patents
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G23/00—Forestry
- A01G23/10—Tapping of tree-juices, e.g. caoutchouc, gum
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
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Abstract
The invention discloses a novel method for optimizing the descending type fat collection of a hybrid pine, which comprises the following steps: (1) selecting the upper slope surface of the hybrid pine, and adopting a descending type bilateral fat collection method to collect fat; a middle ditch is arranged on the longitudinal central line of the cutting surface, and a grease receiving container is arranged at the lower end of the middle ditch to finish the grease collection on the upper slope; (2) selecting a downhill surface of a tree, and adopting a descending type double-lateral ditch two-surface grease collection method to collect grease; a middle ditch is arranged on the longitudinal central line of the cutting surface, and a grease receiving container is arranged at the lower end of the middle ditch to finish grease collection on the downhill surface; (3) calculating the total area of the harvested resin, continuously harvesting the resin for 16 years, completing felling and selling of the hybridized pine which harvests the resin on both the upper slope surface and the lower slope surface, and counting the total value of the sum of the income of the pine resin and the income of the wood. The invention effectively solves the problems that the traditional hybrid pine has serious influence on the growth of the hybrid pine due to high-load fat collection, high risk coefficient, high cost and the like.
Description
[ technical field ] A method for producing a semiconductor device
The invention belongs to the technical field of hybrid pine fat collection, and particularly relates to a novel method for optimizing the descending type fat collection of hybrid pine.
[ background of the invention ]
Interspecific hybridization is a main method for obtaining heterosis, is an important content of forest genetic breeding research, and the cross-breeding pine flooding refers to pine hybrids of different species of parents and parents, particularly to positive and negative cross hybrids of slash pine and caribbean pine in the industry. How to obtain hybrid offspring with the advantages of parents has profound significance for improving pine trees in China. The hybrid pine of the slash pine and the Caribbean pine has the characteristics of rapid growth of male and female parents, straight dry type and the like, and is widely suitable for high-hills and low-hills areas in coastal areas of south China.
The traditional hybrid pine high-load fat collection needs to be erected and climbed to collect fat, so that the problems of high danger coefficient and the like exist, and in addition, the high-load fat collection also has the problems of seriously influencing the growth of the breast diameter of the hybrid pine and the like, so that the improvement of economic benefit is not facilitated.
[ summary of the invention ]
The invention provides a novel method for optimizing descending type fat collection of a hybrid pine, which aims to solve the problems that the high-load fat collection of the traditional hybrid pine needs to be carried out by climbing, the danger coefficient is high, the wood growth is influenced and the like.
In order to solve the technical problems, the invention adopts the following technical scheme:
a new method for optimizing the descending type fat collection of hybrid pine comprises the following steps:
(1) selecting hybridized pine with diameter at breast height of above 17cm, and collecting fat by descending type bilateral fat collection method with depth of 0.3-0.5 cm; a middle ditch is arranged on the longitudinal central line of the cutting surface, and a resin receiving container is arranged at the lower end of the middle ditch until the resin extraction on the upper slope surface of the tree is completed; the specific fat sampling parameters in the step are carried out according to an area formula (1):
in the formula: sAscending slopeRepresenting the fat-collecting area of the upper slope of the hybrid pine; n represents the year of mining and cutting, and n is more than or equal to 1 and less than or equal to 8; d1Representing the diameter of the breast during extraction; dnRepresenting the diameter of breast in the nth harvest year, △ D representing the average increase of the annual diameter of breast, DnIs set as the first item D1The tolerance is △ D, pi is the circumferential rate, 3.14 is taken, gamma is the fat-collecting load rate, L is the step pitch value, D is the number of days of fat collection;
(2) selecting the descending slope of the tree, reserving more than 10cm nutrition zones away from the ascending slope, and collecting the fat by a descending double-lateral ditch two-side fat collection method, wherein the depth is 0.3-0.5 cm; a middle ditch is arranged on the longitudinal central line of the cutting surface, a grease receiving container is arranged at the lower end of the middle ditch, and grease is collected for 8 years continuously to finish grease collection on the downhill surface;
(3) calculating the total area of resin collection, cutting and selling the hybridized pine which finishes resin collection on the upper slope and the lower slope of the tree, counting the total value of the sum of the income of the pine resin and the income of the wood, and calculating the economic benefit.
Further, selecting a downhill surface of the tree in the step (2), and taking the resin from the ground to a position 1.7m higher than the tree according to a descending type bilateral ditch two-surface resin taking method.
Further, the specific fat-tapping parameter in the step (2) is carried out according to an area formula (2):
in the formula: sDownhill slopeRepresenting the fat-collecting area of the hybrid loose slope; n represents the year of mining and cutting, and n is more than or equal to 9 and less than or equal to 16; d1Representing the diameter of the breast during extraction; dn-1Representing the breast diameter of the (n-1) th harvest year, △ D representing the average annual breast diameter growth, DnIs set as the first item D1The tolerance is △ D, pi is circumference ratio, 3.14 is taken, gamma is the fat-collecting load rate, L is the step pitch value, and D is the number of days of fat collection.
Furthermore, the fat-collecting load rate in the steps (1) and (2) is 40-45%.
Further, the formula for calculating the total area of the collected fat in the step (3) is as follows:
Sgeneral assembly＝SAscending slope+SDownhill slope(3)
In the formula: sGeneral assemblyRepresents the total fat-collecting area of the hybrid pine.
The invention has the following beneficial effects:
according to the invention, the fat-collecting load rate is strictly controlled, nutrient zones with the length of more than 10cm are reserved between the cutting surfaces to convey nutrients, and the healthy growth of the hybrid pine is realized, so that the great economic benefits of fat production and wood production are realized, and the problems that the growth of the hybrid pine is seriously influenced by the high-load fat collection of the traditional hybrid pine, the wood production is greatly reduced, the high-load fat collection needs to be erected and climbed, the danger coefficient is high, the personal safety is caused, the cost is high and the like are effectively solved.
[ description of the drawings ]
FIG. 1 is a first structural diagram of a descending bilateral sulcus fat sampling method;
FIG. 2 is a schematic diagram of a two-sided grease collection method using a descending double-sided ditch;
FIG. 3 is a schematic diagram of the front and back faces of fat collection of hybrid pine.
[ 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.
The invention researches the fat-collecting technology and selects better process parameters such as fat-collecting breast diameter, cutting depth, cutting load rate and the like, thereby providing theoretical and data basis for realizing obtaining great economic benefits of fat production and material production.
First, the requirement of breast diameter
Different radial step fat extraction comparison tests of 12-year-old slash pine, Caribbean pine and hybrid pine are carried out in the forestry department in Hepu county, the tests are provided with 4 initial radial step treatments of 14cm radial step, 16cm radial step, 18cm radial step and 20cm radial step, sample plots with relatively consistent slope direction and consistent land power are selected, 35 strains are selected for each radial step to carry out fat extraction, and 5 strains are set for each radial step without fat extraction as comparison. The test result shows that: (1) analysis of variance shows that the test conclusions of slash pine, Caribbean pine and hybrid pine are similar, and the differences of chest diameter growth and total lipid production between different diameter steps reach significant levels; (2) the total lipid production increases with the larger radial steps, wherein the lipid production of 20cm radial steps is the highest and is respectively improved by 76.23%, 45.39% and 18.96% compared with 14cm radial steps, 16cm radial steps and 18cm radial steps; (3) the influence of fat sampling on the growth amount of the breast diameter is reduced along with the increase of the radial step, wherein the influence is maximum at 14cm radial step, and the fat sampling in the 14cm radial step group is reduced by 37.63 percent of the growth amount of the breast diameter compared with the fat sampling without the fat sampling; (4) the largest influence of the oil extraction on the growth amount of the single plant volume is also the diameter order of 14cm, and the oil extraction reduces the growth amount of the single plant volume by 60.74 percent compared with the oil extraction without the oil extraction; (5) the influence of the fat collection on the breast diameter of 20cm diameter and the growth amount of the individual plant volume is small, and 11.46%, 9.75% and 7.83% of the individual plant volume of 14cm diameter, 16cm diameter and 18cm diameter are consumed by the fat collection respectively. Therefore, the fat collection of 12-year-old foreign pine is less than that of 14cm diameter, which greatly affects the breast diameter and single plant volume growth of the hybrid pine and has unstable fat yield. The medium-long term resin collection starts cutting with the diameter of more than 16, so that the volume growth and the rosin yield of the forest can be better considered.
(II) relationship between different cutting depths and fat yield
A comparison test of different cutting depths (depth of entering xylem) and fat yield of 12-year-old foreign pines is carried out in Linaceae in Hepu county, 3 groups of cutting depth treatments of 0.6cm, 0.9cm and 1.4cm are set in the test, sample plots with relatively consistent slope directions and consistent land abilities are selected, and 35 plants are selected for each cutting depth. The test result shows that: (1) the test conclusions of 3 tree species of the slash pine, the Caribbean pine and the hybrid pine are similar, namely, the influence of 3 different cutting depths on the fat yield is not obvious, and the influence on the breast height growth of the forest is not large; (2) although different cutting depths have little influence on the output of the turpentine and the growth of the wood, the quality of the wood is influenced, and the quality of the wood is reduced. The cutting depth exceeding 1cm can cause the wood to be slightly torn, the wood is easy to fall down by wind, and the wood is broken from the cutting position, thereby causing economic loss. The cutting depth of foreign pine popularization for more than 10 years of production is less than 1cm, and the smaller the cutting depth, the better the cutting depth.
(III) relationship between different cutting load rates and fat yield
A comparison test of different cutting load rates and fat yields of 12-year-old hybrid pines is carried out in Linaceae in Hepu county, and the test sets 6 treatments of 3 fat collection load rates of 2 radial steps, wherein the 2 radial steps are 14-16cm radial steps (13.0-16.9 cm breast diameter) and 18-20cm radial steps (17.0-20.9 cm breast diameter), and 3 fat collection load rates of 40%, 45% and 50% are set for each radial step. The plots with relatively consistent slope direction and consistent land fertility were selected, and 35 plants were selected for each harvest depth. The test result shows that: (1) the processing of different fat collection load rates of 14-16cm radius steps has no obvious influence on fat collection yield, but has obvious influence on the growth of the breast diameter and the growth of volume of timber, the breast diameter growth amount of 40% load fat collection year is 1.06cm, the breast diameter growth amount of 50% load fat collection year is only 0.45cm, and test results show that the larger the fat collection load rate is, the smaller the annual breast diameter growth amount is, which shows that small-diameter step trees in a 14-16cm radius step group mainly grow, and the growth of the trees is seriously influenced by the too small fat collection of the breast diameter; (2) the fat yield difference of different fat recovery load rates of 18-20cm diameter-step starting fat recovery in the 1 st year is obvious, and the fat yield sequences are that the fat recovery load rate is 50 percent, the fat recovery load rate is 45 percent, and the fat recovery load rate is 40 percent; (3) in the 2 nd and 3 rd years of fat collection, the difference of the fat yields of different fat collection load rates is obvious, wherein the fat yields of 40 percent and 45 percent of the fat collection load rates have no obvious difference, but the fat yield reaches the level of obvious difference with the 50 percent of the fat collection load rate, and the fat yield is obviously lower than the 40 percent of the fat collection load rate; (4) in 2 nd and 3 rd years of resin collection, except that the resin collection load rate obviously affects the yield of turpentine, the annual breast diameter growth difference also reaches an obvious level, namely the annual breast diameter growth at 50 percent of the resin collection load rate and 40 percent of the load rate is 0.73cm and 1.25cm respectively. And (3) fat collection in the middle-age and long-term of the hybrid pine middle-age forest, wherein the fat collection load rate is preferably not more than 45% on the premise of balancing the fat production and the wood production of the forest.
(IV) area formula of mining and cutting
The traditional hybrid pine high-load fat collection needs to be erected and climbed to collect fat, so that the problems of high danger coefficient and high cost exist, in addition, the high-load fat collection seriously influences the growth of the hybrid pine, the realization of balanced development of fat production and material production is not facilitated, and the purpose of obtaining larger economic benefit is achieved. The invention researches the fat-collecting technology, selects better process parameters such as fat-collecting breast diameter, cutting depth, cutting load rate and the like, and adopts a 'two-sided' fat-collecting method to collect fat. The specific formula of the area for sampling the fat is as follows:
in the formula: sAscending slopeRepresenting the fat-collecting area of the upper slope of the hybrid pine; n represents the year of mining and cutting, and n is more than or equal to 1 and less than or equal to 8; d1Representing the diameter of the breast during extraction; dnRepresenting the diameter of breast in the nth harvest year, △ D representing the average increase of the annual diameter of breast, DnIs set as the first item D1Tolerance is △ D, pi is circumferential rate, 3.14 is taken, and gamma is grease collecting loadRate; l is the step pitch value; d is the days of fat collection.
In the formula: sDownhill slopeRepresenting the fat-collecting area of the hybrid loose slope; n represents the year of mining and cutting, and n is more than or equal to 9 and less than or equal to 16; d1Representing the diameter of the breast during extraction; dn-1Representing the breast diameter of the (n-1) th harvest year, △ D representing the average annual breast diameter growth, DnIs set as the first item D1The tolerance is △ D, pi is circumference ratio, 3.14 is taken, gamma is the fat-collecting load rate, L is the step pitch value, and D is the number of days of fat collection.
SGeneral assembly＝SAscending slope+SDownhill slope(3)
In the formula: sGeneral assemblyRepresents the total fat-collecting area of the hybrid pine.
On the basis of the above-described optimization parameters, the present invention is explained below by way of more specific examples.
Example 1
Referring to fig. 1, 2 and 3, a new method for optimizing the reduced fat-collecting of hybrid pine comprises the following steps:
(1) selecting hybrid pine with breast diameter of 18.2cm in Linaceae in Hepu county, performing bilateral furrow harvesting on the upper slope of the tree from the ground to 1.7m high of the tree at a single included angle of 30 degrees, wherein the depth of the harvesting furrow into xylem is 0.3cm, the step distance is 0.1cm, and harvesting is performed according to 1 day 2; a middle ditch is cut at the longitudinal central line of the cutting surface, the cutting length is 30cm, the width is 1.0cm, the depth is 0.5cm, a fat receiving container (a plastic cup) is arranged at the lower end of the middle ditch and fixed by adopting bamboo products, the fat collecting load rate is 45 percent, the circumference of the cutting surface is 25.7cm, and the fat collection on the upper slope surface is finished after the continuous fat collection for 8 years;
(2) selecting a downhill surface of the tree, respectively reserving 11cm and 12cm nutrition zones away from the uphill surface, carrying out double-lateral ditch cutting at a position 1.7m from the ground to the height of the tree, carrying out single included angle of 30 degrees, wherein the depth of a cutting ditch is 0.3cm into xylem, the step pitch is 0.1cm, and cutting in 2 days by 1; a middle ditch is cut on the longitudinal central line of the cutting surface, the cutting length is 30cm, the width is 1.0cm, the depth is 0.5cm, a fat receiving container (a plastic cup) is arranged at the lower end of the middle ditch and fixed by adopting bamboo products, the fat collecting load rate is 43 percent, the circumference of the cutting surface is 25.7cm, the fat is continuously collected for 8 years, and the fat collection of the downhill surface is finished;
(3) felling the hybridized pine which finishes resin collection on the upper slope surface and the lower slope surface of the tree, calculating the resin collection area and the resin yield according to the formulas (1) to (3), counting the total yield of the sum of the pine resin income and the wood income, and calculating the economic benefit.
Example 2
Referring to fig. 1, 2 and 3, a new method for optimizing the reduced fat-collecting of hybrid pine comprises the following steps:
(1) selecting 17.8cm diameter-breast cross pine in Hepu county Linke, performing bilateral furrow cutting from the place away from the ground to 1.7m high on the upper slope of the tree, with a single included angle of 30 degrees, a cutting furrow deep into xylem of 0.3cm, a step distance of 0.12cm, and cutting at 1 day for 2 days; a middle ditch is cut at the longitudinal central line of the cutting surface, the cutting length is 32cm, the width is 1.2cm, the depth is 0.5cm, a fat receiving container (a plastic film bag) is arranged at the lower end of the middle ditch and fixed by wood products, the fat collecting load rate is 43 percent, the circumference of the cutting surface is 24.0cm, and the fat collecting is carried out for 8 years, so that the fat collecting on the upper slope surface is completed;
(2) selecting a descending slope surface of the tree, reserving nutrient zones of 12cm and 13cm away from the ascending slope surface respectively, carrying out double-lateral ditch harvesting and cutting at a position 1.7m away from the ground to the height of the tree, carrying out single included angle of 30 degrees, enabling the cutting ditch to be 0.3cm deep into xylem, and carrying out harvesting at a step distance of 0.12cm in 2 days 1; a middle ditch is cut on the longitudinal central line of the cutting surface, the cutting length is 32cm, the width is 1.2cm, the depth is 0.5cm, a fat receiving container (a plastic film bag) is arranged at the lower end of the middle ditch and fixed by wood products, the fat sampling load rate is 41 percent, the perimeter of the cutting surface is 33.2cm, the fat sampling is continuously carried out for 8 years, and the fat sampling of the downhill surface is finished;
(3) felling the hybridized pine which finishes resin collection on the upper slope surface and the lower slope surface of the tree, calculating the resin collection area and the resin yield according to the formulas (1) to (3), counting the total yield of the sum of the pine resin income and the wood income, and calculating the economic benefit.
Example 3
Referring to fig. 1, 2 and 3, a new method for optimizing the reduced fat-collecting of hybrid pine comprises the following steps:
(1) selecting a hybrid pine with a breast diameter of 19.3cm in Linaceae in Hepu county, performing bilateral furrow harvesting on the upper slope of the tree from the ground to a position 1.6m higher than the tree, performing single included angle of 30 degrees, wherein the depth of the harvesting furrow into xylem is 0.3cm, the step distance is 0.11cm, and harvesting 1 in 2 days; a middle ditch is cut at the longitudinal central line of the cutting surface, the cutting length is 36cm, the width is 1.3cm, the depth is 0.5cm, a fat receiving container (a plastic cup) is arranged at the lower end of the middle ditch and fixed by adopting bamboo products, the fat collecting load rate is 45 percent, the circumference of the cutting surface is 27.3cm, and the fat collecting is carried out for 8 years, so that the fat collecting on the upper slope surface is completed;
(2) selecting a downhill surface of the tree, reserving nutrient zones of 11cm and 13cm respectively at a distance from the uphill surface to the uphill surface, performing double-lateral ditch cutting at a position 1.6m from the ground to the height of the tree, performing single included angle of 30 degrees, wherein the depth of a cutting ditch is 0.3cm into xylem, the step distance is 0.11cm, and performing 1-day cutting in 2 days; a middle ditch is cut on the longitudinal central line of the cutting surface, the cutting length is 35cm, the width is 1.2cm, the depth is 0.5cm, a fat receiving container (a plastic cup) is arranged at the lower end of the middle ditch and fixed by adopting a bamboo product, the fat sampling load rate is 40 percent, the perimeter of the cutting surface is 34.3cm, the fat sampling is continuously carried out for 8 years, and the fat sampling of the downhill surface is completed;
(3) felling the hybridized pine which finishes resin collection on the upper slope surface and the lower slope surface of the tree, calculating the resin collection area and the resin yield according to the formulas (1) to (3), counting the total yield of the sum of the pine resin income and the wood income, and calculating the economic benefit.
Comparative example
Adopting a traditional hybrid pine high-load fat collection method to collect fat:
(1) selecting hybrid pine with diameter at breast height of 18.4cm from Linke of Hepu county, performing bilateral furrow harvesting from 1.7m from ground to xylem with single included angle of 30 deg, depth of furrow into xylem of 0.3cm, and step pitch of 0.1cm, and harvesting for 2 days 1; a middle ditch is cut at the longitudinal central line of the cutting surface, the cutting length is 30cm, the width is 1.0cm, the depth is 0.5cm, a fat receiving container (a plastic cup) is arranged at the lower end of the middle ditch and is fixed by adopting a bamboo product, the fat is collected with the fat collection load rate of 60 percent, the perimeter of the cutting surface is 34.7cm, and the fat collection lasts for 8 years;
(2) performing double-side ditch cutting at a position 4m from the ground to the height of the tree, performing single included angle of 30 degrees, and cutting the ditch 0.3cm deep into xylem with a step pitch of 0.1cm, and performing 1-day mining for 2 days; a middle ditch is cut on the longitudinal central line of the cutting surface, the cutting length is 30cm, the width is 1.0cm, the depth is 0.5cm, a fat receiving container (a plastic cup) is arranged at the lower end of the middle ditch and fixed by adopting a bamboo product, the fat collecting load rate is 65 percent, the perimeter of the cutting surface is 45.7cm, and the fat collecting period is 8 years;
(3) and (4) cutting the hybrid pine which finishes the fat collection, selling the hybrid pine, counting the total yield of the sum of the income of the pine resin and the income of the wood, and calculating the economic benefit.
The economic benefits per acre of examples 1-3 and comparative example 1 were counted as shown in table 1.
| Experimental project | Pine resin income (Wanyuan) | Wood income (Wanyuan) | Total income (Wanyuan) |
| Example 1 | 1.867 | 1.980 | 3.848 |
| Example 2 | 1.715 | 1.934 | 3.649 |
| Example 3 | 2.023 | 2.305 | 4.328 |
| Comparative example | 2.102 | 1.025 | 3.127 |
From the above table, it can be seen that: the economic benefit obtained by adopting the methods of the embodiments 1 to 3 is far greater than that obtained by adopting the method of the comparative example, and is respectively improved by 23.06%, 16.69% and 38.41% compared with the comparative example (only income per mu is compared on the table, and the fat collection cost also needs to calculate the frame building cost, the climbing fat collection efficiency and the like of the comparative example).
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A new method for optimizing the descending type fat collection of a hybrid pine is characterized by comprising the following steps:
(1) selecting hybrid pine with diameter at breast height of above 17cm, and collecting fat on the upper slope of tree by descending type bilateral ditch two-sided fat collection method with depth of 0.3-0.5 cm; a middle groove is formed in the longitudinal central line of the cutting surface, a fat receiving container is arranged at one end of the cutting surface, and fat is continuously collected for 8 years to finish fat collection on the upper slope; the specific fat sampling parameters in the step are carried out according to an area formula (1):
in the formula: sAscending slopeRepresenting the fat-collecting area of the upper slope of the hybrid pine; n represents the year of mining and cutting, and n is more than or equal to 1 and less than or equal to 8; d1Representing the diameter of the breast during extraction; dnRepresenting the diameter of breast in the nth harvest year, △ D representing the average increase of the annual diameter of breast, DnIs set as the first item D1The tolerance is △ D, pi is the circumferential rate, 3.14 is taken, gamma is the fat-collecting load rate, L is the step pitch value, D is the number of days of fat collection;
(2) selecting the descending slope of the tree, reserving more than 10cm nutrition zones away from the ascending slope, and collecting the fat by a descending double-lateral ditch two-side fat collection method, wherein the depth is 0.3-0.5 cm; a middle ditch is arranged on the longitudinal central line of the cutting surface, a grease receiving container is arranged at the lower end of the cutting surface, and grease is continuously collected for 8 years to finish grease collection on the downhill surface;
(3) calculating the total area of resin collection, cutting and selling the hybridized pine which finishes resin collection on the upper slope and the lower slope of the tree, counting the total value of the sum of the income of the pine resin and the income of the wood, and calculating the economic benefit.
2. The method for optimizing descending resin tapping of hybrid pine as claimed in claim 1, wherein the descending slope of the tree is selected in step (2) and the resin tapping is performed by descending bilateral sulcus two-sided resin tapping from the ground to 1.7m higher than the tree.
3. The method for optimizing the yield-reducing fat-liquoring of hybrid pines according to claim 1, wherein the specific fat-liquoring parameters in step (2) are performed according to the area formula (2):
in the formula: sDownhill slopeRepresenting the fat-collecting area of the hybrid loose slope; n represents the year of mining and cutting, and n is more than or equal to 9 and less than or equal to 16; d1Representing the diameter of the breast during extraction; dn-1Representing the breast diameter of the (n-1) th harvest year, △ D representing the average annual breast diameter growth, DnIs set as the first item D1The tolerance is △ D, pi is circumference ratio, 3.14 is taken, gamma is the fat-collecting load rate, L is the step pitch value, and D is the number of days of fat collection.
4. The method for optimizing the yield-reducing fat of hybrid pine according to claim 1, wherein the fat-collecting load rate in the steps (1) and (2) is 40-45%.
5. The method for optimizing the yield of fat from hybrid pine as claimed in claim 1, wherein the total fat area calculated in step (3) is calculated as follows:
Sgeneral assembly＝SAscending slope+SDownhill slope(3)
In the formula: sGeneral assemblyRepresents the total fat-collecting area of the hybrid pine.
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