JP2008220330A - Method for attracting young stem of asparagus, and attracting tool used for the method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for attracting a young stem of asparagus aiming at making complicated harvesting work more efficient and reducing physical burden from the harvesting work: and to provide an attracting tool used for the method. <P>SOLUTION: The method for attracting a young stem of asparagus comprises fixedly attaching an introducing member to the young stem (including just-sprouting one) of asparagus so that the asparagus grows while pushed down to the vicinity of the ground, so as to make the stem stand. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method for attracting asparagus young stems and an attracting tool used therefor.

  Harvesting work in asparagus cultivation is forced to work for a long time in the middle, and light labor is required.

  In addition, in the case of full-year standing stem cultivation, the stems and young stems grown on the cocoon are mixed because the standing stems and the young stems are cultivated at the same time by the standing stem management (FIG. 1). For this reason, when harvesting young stems, it is necessary to harvest the young stems that grow near the base of the mother stem while avoiding the large stems, and asparagus harvesting is extremely complicated and inefficient work. It has become.

  Various methods of attracting plants and attracting tools have been developed for the purpose of labor saving of vegetable cultivation work (for example, Patent Document 1, Patent Document 2, etc.), but asparagus harvesting work is light labor. No attracting method or attracting tool has been developed.

Utility model registration No. 3107339 JP-A-2005-224204

  An object of the present invention is to provide an asparagus mother stem attracting method and an attracting tool used therefor in order to improve the efficiency of complicated harvesting work of asparagus and reduce the physical load of the harvesting work.

  The present inventors push down the young stalk, which is the mother stalk of asparagus, to stand at a certain position, thereby separating the mother stalk position from the young stalk occurrence position, thereby harvesting the young stalk. The present invention has been completed.

The features of the present invention are summarized as follows.
(1) An asparagus that includes young asparagus stalks (including those immediately after budding) that are fixed by placing an induction member so that the asparagus is pushed down on the ground and grows. How to attract young stems.
(2) The method according to (1), wherein the guide member is applied so that the young stalk of asparagus is pushed down and grown at an angle of about 30 to 60 degrees with respect to the ground.
(3) About 1 to 5 days after applying the guide member to the young asparagus stalk, further including pushing down the ground so that the asparagus is substantially parallel to the ground to fix the guide member, The method according to (1) or (2).
(4) The method according to any one of (1) to (3), wherein the young stem is up to about 50 cm in stem length.
(5) The method according to any one of (1) to (4), wherein a young stem to be harvested is generated at the root of the asparagus that has been erected.
(6) The method according to any one of (1) to (5), wherein the guide member is a member for applying a load to a young stalk of asparagus and guiding it so that it grows by being pushed down on the ground.
(7) The method according to any one of (1) to (6), wherein the material of the guide member is polymer, metal, wood, glass, or paper.
(8) The method according to any one of (1) to (7), wherein the guide member has a length of about 10 to 50 cm.
(9) The method according to any one of (1) to (8), wherein the guide member is fixed by a support member.
(10) The support member is a member formed in a substantially V shape or a substantially U shape so that the diameter of a cross section perpendicular to the longitudinal direction is about 5 mm or less and the height is about 5 to 30 cm. The method according to (9).
(11) A guide member having a length of about 10 to 50 cm for applying a load to young asparagus stalks (including those immediately after sprouting) and being pushed down on the ground to grow. A support member formed in a substantially V shape or a substantially U shape so that the diameter of the cross section perpendicular to the longitudinal direction is about 5 mm or less and the height is about 5 to 30 cm for fixing the member An asparagus attractant for young stalks.
(12) The cross-sectional shape perpendicular to the longitudinal direction of the guide member is a plate shape, a substantially L shape, a substantially V shape, a substantially U shape, a substantially semicircular shape, a substantially C shape, a circular shape, or an elliptical shape. The attracting tool according to (11).
(13) The attracting tool according to (12), wherein the maximum width of a cross section perpendicular to the longitudinal direction of the guiding member is about 10 to 50 mm.

  As used herein, “young stem” refers to a stem having a stem length of up to about 50 cm, including those immediately after germination, and not only a stem that is harvested after germination but also a stem that is allowed to stand without being harvested. Shall also be included.

  In the present specification, “standing stem” refers to growing young shoots without harvesting and growing stalks and leaves in order to cultivate the stock.

  In the present specification, the “mother stem” refers to an adult stem that has stalks and leaves grown in order to cultivate a stock by raising the stem.

  In the present specification, the term “growth by being pushed down on the ground” usually means that asparagus that grows in a direction substantially perpendicular to the ground grows at an angle of less than 90 degrees with respect to the ground. Say.

  According to the present invention, the position where the stems and leaves of the mother stem of asparagus thrives and the position where the young stem for harvesting grows apart in the horizontal direction, so that the harvesting operation of the young stem is lightened. Moreover, asparagus can be induced with a simple attracting tool.

  The method for attracting asparagus stalks of the present invention is fixed to the asparagus stalks (including those immediately after sprouting) by applying an induction member so that the asparagus is pushed down on the ground and grows, It is characterized by including making it stand.

  The attraction can be carried out from asparagus sprouting and while it is a young stalk, preferably while growing into a young stalk having a stem length of about 50 cm. It is more preferable to perform attracting when the stem length is about 10 to 30 cm because of the difficulty of breaking the young stem.

  As a first stage of attraction, the guide member is applied and fixed so that the young stem is inclined at an angle of preferably about 30 to 60 degrees, more preferably about 40 to 50 degrees with respect to the ground (FIG. 2A). ), Preferably about 1 to 5 days, more preferably about 1 to 2 days, and as a second step, the asparagus is pushed down on the ground so that it is substantially parallel to the ground, and the guide member is fixed. It is preferable (FIG. 2B). It may be allowed to stand as it is in the first stage of attraction, or it may be fixed from the beginning so that asparagus grows almost parallel to the ground. Depending on the degree of growth, the young stem may break, so depending on the degree of growth, grow asparagus from the beginning almost parallel to the ground or divided into the above first stage and second stage (and more than the third stage) It is preferable to select whether or not to attract the young stem while turning it in stages.

  When the asparagus is erected after attracting, the position where the stems and leaves of the mother stem grows away from the base of the mother stem in the horizontal direction (Fig. 2 (C)), and the young stem to be harvested is at the root of the mother stem. Occurs (FIG. 3). When cultivating asparagus with straw, push the young stems, which are the mother stems, in the direction of the intercostals to form the mother stems in a row, and keep the standing stems of the mother stems away from the occurrence of the young stems. Good (FIG. 2C, FIG. 2D).

  If the induction member uses a guide member for attraction, and the guide member is capable of applying a load to a young asparagus stalk (including the one immediately after budding) and being pushed down on the ground, it can be induced to grow. The shape, size, material, etc. are not particularly limited.

  The guide member is a metal or coated metal wire or bar, or a cross-sectional shape perpendicular to the longitudinal direction is a plate shape, a substantially L shape, a substantially V shape, a substantially U shape, a substantially semicircular shape, or a substantially C shape. A circular or elliptical shape having a length of about 10 to 50 cm (FIG. 4), more preferably about 10 to 40 cm is preferable. The maximum width of the cross section perpendicular to the longitudinal direction is not particularly limited, but may be a width that does not hinder the growth of asparagus inside the induction member or a width that allows the induction member to be easily applied to the asparagus. The major is preferably about 10-50 mm (FIG. 4), more preferably about 20-30 mm. In addition, a guide member having a corner shape such as a substantially U-shape or a square shape can be used.

  The maximum width of the cross section perpendicular to the longitudinal direction means the width of the plate in the case of a plate, and is substantially L-shaped, substantially V-shaped, substantially U-shaped, substantially semicircular and substantially C-shaped. Is the opening width, and in the case of circular and elliptical shapes, it is the maximum inner diameter.

  The material of the guide member is not particularly limited, and examples thereof include polymers such as resins such as polyvinyl chloride, acrylic resin, and polycarbonate, metals, wood, glass, paper, and the like. There may be.

  The support member for fixing the guide member is not particularly limited in shape, size, material, etc., as long as it is suitable for fixing the guide member. However, the diameter of the wire or the cross section perpendicular to the longitudinal direction is preferably about 5 mm or less (FIG. 5), more preferably about 0.5 to 5 mm, still more preferably about 2 to 4 mm, and the height is preferably about 5 to 30 cm (FIG. 5), more preferably about 10 to 30 cm, More preferably, a support member formed in a substantially V shape to a substantially U shape so as to be about 15 to 25 cm is suitable. The guide member can be fixed by setting the support member in the direction of, for example, an inverted V shape or an inverted U shape and inserting the guide member into the inverted V shape or the inverted U shape from above so as to be inserted into the ground.

  The material of the support member is not particularly limited, but as with the guide member, for example, polymers such as resins such as polyvinyl chloride, acrylic resin, polycarbonate, metal, wood, glass, paper and the like can be mentioned.

  When attracting young shoots immediately after sprouting to the ground, cover the shoot with a guide member (in the case of circular, elliptical, or quadrangular guide members, cover the shoot with the shoot), asparagus The guide member is fixed so that it grows at an angle of preferably about 30 to 60 degrees, more preferably about 40 to 50 degrees with respect to the ground, or grows substantially parallel to the ground.

  When attracting young stalks to the ground, the guide member is applied from the ground of the young stalks so that the roots of the young stalks do not break, and asparagus is preferably about 30 to 60 degrees, more preferably to the ground. It is preferable to fix the guide member so that it grows inclined at about 40 to 50 degrees. In addition, when attracting young stems with a wire, it is possible to push down and fix on the ground with only the wire, but the young stem may break, and the convenience and time of the attracting process (attracting work) In particular, a guide member whose cross-sectional shape perpendicular to the longitudinal direction is approximately L-shaped, approximately V-shaped, approximately semicircular, or approximately U-shaped is preferable.

  The time zone for performing the attraction treatment is not particularly limited. However, the daytime is preferable because the moisture in the young stem is lower than in the morning or at night, and the young stem is less likely to break. In addition, when young shoots are attracted in a state where the soil moisture is high, the resistance of the soil is small, and the root portion of the sprouting in the soil is not fixed, so that portion may break. The soil moisture is not particularly limited, but is, for example, pF 1.3 or more, more preferably pF 1.6 or more, and further preferably pF 1.7 or more. Furthermore, the thicker the soil thickness (the thickness of the soil from the buds in the soil to the topsoil) is preferable because the young stem is less likely to break. The soil thickness is, for example, about 3 cm or more, more preferably about 5 cm or more, and further preferably about 6 cm or more.

  The attractant for asparagus stalks of the present invention is about 10 in length for inducing the asparagus stalks (including those immediately after sprouting) to be loaded and pushed to grow on the ground. A guide member of ˜50 cm and a diameter of a cross section perpendicular to the longitudinal direction for fixing the guide member is about 5 mm or less, and is substantially V-shaped or U-shaped so that the height is about 5-30 cm. And a support member formed in a shape.

  The guide member has a cross-sectional shape perpendicular to the longitudinal direction, preferably a plate shape, a substantially L shape, a substantially V shape, a substantially U shape, a substantially semicircular shape, a substantially C shape, a circular shape or an elliptical shape, Preferably, it has a substantially L shape, a substantially V shape, a substantially U shape, or a substantially semicircular shape, and the maximum width of the cross section is preferably about 10 to 50 mm, more preferably about 20 to 30 mm.

  The support member has a cross-sectional diameter perpendicular to the longitudinal direction, more preferably about 0.5 to 5 mm or less, still more preferably about 2 to 4 mm, and a height of about 10 to 30 cm, still more preferably. It is formed in a substantially V shape or a substantially U shape so as to be approximately 15 to 25 cm.

  The following examples further illustrate the present invention, but the scope of the present invention is not limited by these examples.

  The following experiment was conducted in all seasons of open stem cultivation of asparagus cultivar 'Welcome' planted in May 2004.

Examination of guide member Select young stems with stem lengths of 5-9, 10-14, 15-19 and 20-30 cm for the second-year strains in April 2005, using a guide member of wire, semi-cylindrical, pipe, The time taken for the attraction process and the rate at which the young stems were broken by the attraction process (hereinafter referred to as the rate at which the young stems were broken) were investigated.
The results are shown in Table 1.

  Although any induction member was able to attract young stems, the semi-cylindrical induction member (opening width 25 mm, length 27 cm) section had the shortest time required for the attraction treatment, and the young stem breaking rate was low. Moreover, in the same ward, the stem length at the time of attraction was 5 to 9 cm and the folding rate was as high as 36.7%. However, when the stem length was 10 cm or more, 6.7% was not seen.

Examination of attracting angle and attracting time zone A young stem having a stem length of 20 to 30 cm was selected in April 2006, and a semi-cylindrical guiding member (opening width 25 mm, length 27 cm) was used at 10:00, 13:00 and 16 At each time zone of 0:00, 45 and 60 degrees (30 degrees with respect to the ground) attraction zones were provided, and the rate of breakage of the young stalks was investigated.
The results are shown in Table 2 and Table 3.

  From Table 2, it was found that attracting is possible in any of the 45 degree and 60 degree attracting zones and in any time zone, but in the 45 degree attracting zone, the rate of breakage of the young stem is 10 regardless of the attracting time zone. In the 60 degree ward, every time zone was higher than the 45 degree ward.

  Further, from Table 3, it was found that the time period for performing the attracting process is preferably performed in the daytime rather than in the morning and at night.

  From the above results, if the young stalk is attracted to the ground part at once, the probability that the young stalk will break increases, so that the two-stage attraction that attracts the first part to 45 degrees and then further to the ground part is more preferable. It was judged. Further, it was considered that the attracting should be performed in the daytime, and the bent stalks of the young stem in the one-step attracting should be left for at least 1 day, preferably 2 days after the attraction.

Examination of fold site and soil moisture Select young stems with stem length of 20-30cm at 10:00, 13:00 and 16:00 on April 27, 2006 (fine weather) after raining, and attract them at an angle of 45 degrees The broken part was confirmed about the broken young stem. Moreover, it measured also about the thickness of the soil from the scale bud of each attracted young stem to topsoil. At the same time, soil moisture in each time zone was measured with a tensiometer.
The results are shown in FIG.

  When the soil moisture was high, young stems were easy to break, and the part of the stem that was attracted was the root of the scale in the soil. With soil moisture pF1.3, stem breakage occurred under conditions where the thickness of the soil from the buds that fixed the underground part of the young stem to the topsoil was about 6 cm or less, with pF1.6 being about 5 cm or less, and with pF1.7 Due to the soil drying of about 3 cm or less, the rate of stalk breakage under conditions where the thickness of the soil holding the young stem was thin was reduced.

An apparatus was prepared in which the base of an iron pipe (40 × 1.3 cm) was fixed to a soil resistance plastic container (52 × 36.5 × 16 cm) at the time of attraction due to the difference in soil moisture so that it could move. After putting the soil to a thickness of 5 cm from the base of the iron pipe, it was sufficiently watered. After that, it is dried to each soil moisture of pF1.5, 1.7 and 2.0 under natural conditions, and a spring is attached at a height of 20 cm from the edge of the iron pipe, and the iron pipe is brought to an angle of 45 degrees. Attraction load (soil resistance) when attracted was measured.
The results are shown in FIG.

Soil resistance during attraction due to differences in soil moisture increased with decreasing soil moisture.
From the above, it has been clarified that when young shoot attraction is performed in a state where soil moisture is low, since the resistance of the soil is large, the root portion of the bud is fixed and the bud of the shoot is not easily broken.

Diurnal variation of stem diameter of asparagus shoots In order to investigate the relationship between the body moisture of the asparagus shoots and the rate of stalk breakage, the change in the stem diameter of the shoots was measured using a strain gauge displacement meter. Measurements were recorded at 10-minute intervals between July 13th, 2006, 20: 00 to 14th, 20:00. The young stalks tested were average (stem length 20 cm, stem diameter 12.6 mm × 14.3 mm), and the measurement site was 5 cm high from the ground.
The results are shown in FIG.

  The stem diameter gradually increased from 20:00 to 6:00 the next morning, and started to contract rapidly after sunrise, and contraction was observed until after 9:00. After 12:00, the change in solar radiation intensity showed a significant contraction / recovery change, and the stem diameter rapidly recovered from 17:00 to 18:00 when the solar radiation intensity decreased sharply due to sunset. It has been clarified that the body water of asparagus decreases as the solar radiation intensity increases and recovers as the solar radiation intensity decreases.

  From the above results, it became clear that the breakage of asparagus young shoots due to attraction increases when the body water is high. That is, it was determined that it is preferable to perform the attracting process during the daytime because the stem break rate increases in the early morning immediately after sunrise and after the evening when the solar radiation intensity decreases.

  In any of the examples, no increase in stem blight was observed due to the asparagus attracting treatment.

  The method for attracting young stems of asparagus according to the present invention and the attracting tool used therefor can be expected to spread to existing asparagus producers and new entrants as an efficient technique for harvesting work. Expansion of the production area can also be expected.

A mode that the mother stem and the young stem by the conventional cultivation method are mixed is shown. (A) shows a state (first stage attraction) in which a semi-cylindrical guide member is applied to a young stem, attracted to an angle of about 45 degrees, and fixed with a support member. (B) shows a state of being pushed down and fixed to the border 2 days after the invitation (second stage induction). (C) shows a state in which mother stalks are formed in a line, and the position where the stems and leaves of the mother stalks grow away from the generation position of the young stems. (D) shows a state in which the young stems as mother stems are pushed down in the intercostal direction to form the mother stems in a row. This shows the young stems that are harvested at the base of the mother stem. The guide member has a substantially semicircular cross section (semi-cylindrical shape). A substantially U-shaped support member is shown. The relationship between soil moisture and soil thickness and asparagus breakage is shown. The relationship between soil moisture and attractive load is shown. It shows the change in stem diameter over time of young asparagus stems.

Claims (13)

  Asparagus stalks (including those immediately after budding) are fixed by inducing a guide member so that the asparagus is pushed down on the ground and grows. Attraction method.   The method according to claim 1, wherein the guide member is applied so that the young asparagus stalk is pushed down and grown at an angle of about 30 to 60 degrees with respect to the ground.   The method further comprises fixing the guide member by pushing it down to the ground so that the asparagus is substantially parallel to the ground about 1 to 5 days after the guide member is applied to the young asparagus stem. Or the method of 2.   The method according to any one of claims 1 to 3, wherein the young stem is up to about 50 cm in stem length.   The method according to any one of claims 1 to 4, wherein a young stem to be harvested is generated at the root of the asparagus that has been erected.   The method according to any one of claims 1 to 5, wherein the guide member is a member for applying a load to a young stalk of asparagus to be pushed down on the ground to grow.   The method of any one of claims 1 to 6, wherein the material of the guide member is polymer, metal, wood, glass, or paper.   8. The method of any one of claims 1-7, wherein the guide member is about 10-50 cm in length.   The method according to claim 1, wherein the guide member is fixed by a support member.   The support member is a member formed in a substantially V shape or a substantially U shape so that a cross-sectional diameter perpendicular to the longitudinal direction is about 5 mm or less and a height of about 5 to 30 cm. The method described in 1.   A guide member having a length of about 10 to 50 cm for applying a load to young asparagus stalks (including those immediately after germination) and being pushed down on the ground to grow and fixing the guide member And a support member formed in a substantially V shape or a substantially U shape so that the diameter of the cross section perpendicular to the longitudinal direction is about 5 mm or less and the height is about 5 to 30 cm. Gas attractant for young stems.   The cross-sectional shape perpendicular to the longitudinal direction of the guide member is a plate shape, a substantially L shape, a substantially V shape, a substantially U shape, a substantially semicircular shape, a substantially C shape, a circular shape, or an elliptical shape. The attracting tool described in 1.   The attracting tool according to claim 12, wherein the maximum width of the cross section perpendicular to the longitudinal direction of the guide member is about 10 to 50 mm.

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