CN100571538C - The preparation method that contains the iodine dried sweet potato - Google Patents
The preparation method that contains the iodine dried sweet potato Download PDFInfo
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- CN100571538C CN100571538C CNB2007100698579A CN200710069857A CN100571538C CN 100571538 C CN100571538 C CN 100571538C CN B2007100698579 A CNB2007100698579 A CN B2007100698579A CN 200710069857 A CN200710069857 A CN 200710069857A CN 100571538 C CN100571538 C CN 100571538C
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Abstract
The invention discloses a kind of preparation method that contains the iodine dried sweet potato.That selects fresh free from insect pests for use contains the iodine sweet potato, deposit the back to improve the pol of sweet potato in shady and cool dry place, to clean up through the iodine sweet potato peeling back water of depositing that contains, individual size according to sweet potato, being cut into halves to the quartering does not wait, and the sweet potato piece after will cutting is then put into pot and boiled, and the moisture in the pot is boiled dry, after sweet potato the to be boiled cooling, be placed on equably to toast on the roasting cage and get final product.Technological operation of the present invention is simple, do not add any chemical analysis and artificial color, not only kept the fresh quality that contains iodine sweet potato nature, taste delicate fragrance is sweet, soft anti-the chewing of quality, and be convenient to long-distance transport and long-period freshness preserving, help being transported to remote iodine deficient area, can be used as the natural source that the effective food of people enriches the iodine, thereby can play the effect that effectively prevents and treats IDD(Iodine deficiency disorders) (IDD).
Description
Technical field
The present invention relates to a kind of preparation method that contains the iodine dried sweet potato.
Background technology
Iodine is the trace element of needed by human, it plays a part very important in the metabolic processes of human body, iodine in the human body has more than 1/3rd and exists with thyroid form, there is not iodine, thyroid gland just can not the synthetic thyroid element, thyroxine has the synthetic of promotion protein, activate 100 plurality of enzymes, regulate power conversion, tachyauxesis and growth, keep the biological agents such as structure of central nervous system, so the human body iodine deficiency can cause a series of physiologic derangements and biological function unusual, as cause goitre and cretinism, baby's iodine deficiency when growing particularly, can cause intelligence disability, this because iodine deficiency and, be called as " IDD(Iodine deficiency disorders) " to whole influences that human body caused (IDD).
Statistics according to the World Health Organization, whole world All Countries except that Iceland all has IDD popular, nearly 1,600,000,000 people in the whole world are subjected to the threat of iodine deficiency, in state-owned 4.25 hundred million people live in Iodine Deficiency Area, according to the interrelated data of health ministry, China's intelligence disability philtrum has more than 80% because iodine deficiency causes, because IDD seriously influences human life and health, therefore, human body enriches the iodine, and oneself becomes a public health problem of global range.
Salt adds the method that iodine is the control IDD that generally adopts of present countries in the world.Since 80 years last century, the Chinese government taked the measure of the edible iodizedsalts of the whole people, has obtained certain effect.But in practice for many years, also expose this measure and have some obvious defects: the one, the inorganic iodine that adds in the salt is volatile, part iodine can lose in storage, transportation and gastronomical process, thereby the iodine concentration that adds in the salt is difficult to control, in addition, there is tangible individual difference in human body to the absorption of inorganic iodine in the salt, to such an extent as to the difficult biological effectiveness of assessing it quantitatively; The 2nd, the iodine in the organism has the characteristics of dual threshold, be that high iodine or low iodine all can produce heterogeneity and biological effect in various degree to body, high iodine is taken in and can be caused a disease equally, studies show that thyroid cancer is also relevant with too much absorption iodine, all ages and classes and different classes of crowd are (as children, the adult, pregnant woman and wet nurse) every day the requirement to iodine very big-difference is arranged, carry out Universal saltiodization when the people who gives real iodine deficiency enriches the iodine, also will be to the people of iodine deficiency even the people of minority iodine excess intake do not enrich the iodine by force, show according to interrelated data, high iodine illness incidence increases China recent years because of the iodine excess intake makes, and is spreading trend; The 3rd, at serious iodine deficient area, in case stop iodizedsalt, the illness rate of IDD will rise, and this explanation salt adds iodine, and this is a kind of temporary transient rather than measure permanent and that fundamentally improve the iodine deficiency situation.For this reason, reach the final goal of thorough elimination IDD, except salt added iodine, we need seek the more mode that enriches the iodine of science health.
Existing studies show that, under natural situation, 75%～85% iodine is from vegetable food in the human body, and by from vegetable food naturally the mode of picked-up organic iodine more help keeping the balance of human body iodine, this is because human body reaches as high as 99% to the bioavailability of iodine in the variety classes food.The present invention makes solid iodine fertilizer or liquid iodine fertilizer with the marine alga of rich iodine, by soil fertilization and the mode that sprays, cultivates the sweet potato that contains iodine, contains the iodine sweet potato and is made into the dried sweet potato that contains natural iodine this then.Modern medicine study finds that sweet potato is nutritious, except that containing a large amount of starch, also contain vitamin, amino acid, carrotene, crude fibre, protein, calcium, phosphorus, iron, selenium etc., the health products that are called as comprehensive nutrition, often eat sweet potato, both anti-cancer was promoted longevity again, therefore, sweet potato becomes the food of generally liking in people's daily life.Contain the quality that the iodine dried sweet potato has not only kept fresh sweet potato nature, taste delicate fragrance is sweet, soft anti-the chewing of quality, and be convenient to transport for long-distance and long-period freshness preserving, help being transported to remote iodine deficient area, contain the iodine dried sweet potato like this except can be used as the natural source that a kind of food throughout the year effectively enriches the iodine in the people's daily life of the place of production, also can be used as a kind of food of living in iodine deficient area people source that enriches the iodine, thereby play the effect that effectively prevents and treats IDD(Iodine deficiency disorders) (IDD).
Summary of the invention
The purpose of this invention is to provide a kind of preparation method that contains the iodine dried sweet potato.
A kind of preparation method that contains the iodine dried sweet potato be select fresh free from insect pests for use contain the iodine sweet potato, water cleans up the back peeling, digs with sweet potato sweet potato is dug into the strand shape, passes through the air-dry mode drying of natural Exposure to Sunlight then, gets final product.
The preparation method that another kind contains the iodine dried sweet potato be select fresh free from insect pests for use contain the iodine sweet potato, deposited 40～45 days in shady and cool dry place, to improve the pol of sweet potato, to clean up through the iodine sweet potato peeling back water of depositing that contains, individual size according to sweet potato, being cut into halves to the quartering does not wait, sweet potato piece after will cutting is then put into pot and is boiled, and the moisture in the pot boiled dry, after the sweet potato cooling to be boiled, be placed on equably on the roasting cage and toast, baking temperature is controlled at 49 ℃～51 ℃, gets final product through baking in 24～25 hours.
The described kind method for planting that contains the iodine sweet potato comprises the steps:
1) selects the sweet potato kind of high-quality, grow seedlings, select for use plant the short strong sprout of first section of sweet potato stem and leaf seedling or second period 19～21 centimetres;
2) before inserting seedling, play furrow wholely, and use sufficient base manure and the disposable solid iodine fertilizer that applies, the trend of furrow is " the full waist of flat shoulder " shape with East and West direction, furrow shape, and is organized into the short furrow of horizontal furrow, 0.9～1.1 meter in every furrow bag ditch, furrow are high 0.4～0.5 meter, 0.3～0.4 meter of furrow face width, the surface requirements of furrow is smooth, and is thick outer thin in earth requires, base manure and the dispensing of solid iodine fertilizer are at the furrow heart, and the amount of application of solid iodine fertilizer is 15mg/m
2～150mg/m
2After planting the potato seedling, evenly cover the furrow face of planting the sweet potato seedling with straw, after the potato seedling survives, make Miao Xin stretch out careless face, straw is then stayed the furrow face and is rotted naturally by it, earths up once in conjunction with repairing ditch after 30～35 days, impose 1～2 time with fertilizer and composite fertilizer at the sweet potato growing period, amount of iodine reaches 2.46mg/kg～11.60mg/kg in the sweet potato after the maturation;
Perhaps play furrow before inserting seedling wholely, and use sufficient base manure, base manure discharges at the furrow heart.The trend of furrow is " the full waist of flat shoulder " shape with East and West direction, furrow shape, and is organized into the short furrow of horizontal furrow, about 0.9～1.1 meter in every furrow bag ditch, furrow are high 0.4～0.5 meter, 0.3～0.4 meter of furrow face width, the surface requirements of furrow is smooth, and is thick outer thin in earth requires, after planting the potato seedling, evenly cover the furrow face of planting the sweet potato seedling with straw, after the potato seedling survives, make Miao Xin stretch out careless face, straw is then stayed the furrow face and is rotted naturally by it, and 30～35 backs are in conjunction with repairing the ditch ridging once.Impose 1～2 time with fertilizer and composite fertilizer at the sweet potato growing period, divide 5～6 times to foliage-spray liquid iodine fertilizer before sweet potato is gathered, the blanking time that at every turn sprays is basic identical, the amount of the spraying 12mg/m of liquid iodine fertilizer
2～150mg/m
2, amount of iodine reaches 0.35mg/kg～1.30mg/kg in the sweet potato of ripe back.
The preparation method of described solid iodine fertilizer is: it is 1～6 millimeter that dried sea-tangle is crushed to diameter; with the diatomite of crossing 80～100 mesh sieves with 1: 1～3 ratio; after evenly mixing; by the squash type comminutor; the formation diameter is 2～6 millimeters a granular solids iodine fertilizer, demarcates the content of iodine of this solid iodine fertilizer.
The preparation method of described liquid iodine fertilizer is: with dried sea-tangle and pH value be 6.5～7.5 and temperature be 30～50 ℃ water, with 1: 600～1: 800 ratio, soak after 2～4 hours, take out sea-tangle, soak is liquid iodine fertilizer, demarcates the content of iodine of this liquid iodine fertilizer.
The palmate class sea-tangle that the present invention selects for use, abound with in China offshore sea waters, resource is very abundant, because this class sea-tangle has the biological nature of enrichment iodine from seawater consumingly, therefore wherein the content of iodine is generally up to 0.2%～0.5% of dry weight, and the iodine in the sea-tangle is mainly with iodide ion (I
-) form exist, can make in the sea-tangle about 80% iodide ion enter solution by soaking, so the making of liquid iodine fertilizer is also more convenient.The low-grade diatomaceous resource reserve of China is very big, diatomite is made up of diatom remains and clay mineral, because the diatom remains have the microcellular structure of rule, therefore determined diatomite to have very strong adsorption capacity, make the solid iodine fertilizer with low-grade diatomite as carrier, iodine is slowly discharged, helping iodine is absorbed by crop, and can improve the soil and keep soil tilth, both be convenient to long-distance transport and storage in the use, it is easy to be good with lasting effect to use again.To contain the iodine sweet potato with what solid iodine fertilizer and liquid iodine fertilizer cultivated, it is simple to make the technological operation that contains the iodine dried sweet potato, do not add any chemical analysis and artificial color, not only kept the fresh quality that contains iodine sweet potato nature, taste delicate fragrance is sweet, soft anti-the chewing of quality, and be convenient to transport for long-distance and long-period freshness preserving, help being transported to remote iodine deficient area, contain the iodine dried sweet potato like this except can be used as the natural source that a kind of throughout the year effective food enriches the iodine in the people's daily life of the place of production, also can be used as a kind of food of living in iodine deficient area people source that enriches the iodine, thereby play the effect (seeing accompanying drawing) that effectively prevents and treats IDD(Iodine deficiency disorders) (IDD).
Description of drawings
Accompanying drawing is technology of the present invention and applicating flow chart.
The specific embodiment
The sea-tangle of I is rich in utilization of the present invention, make the solid iodine fertilizer or make liquid iodine fertilizer as carrier with low-grade diatomite through soaking technology, to contain the iodine sweet potato by what use the solid iodine fertilizer or spray that liquid iodine fertilizer cultivates, make the dried sweet potato that contains iodine, the edible in daily life dried sweet potato that contains iodine of people can be used as a kind of long-term effective food source that enriches the iodine.
Concrete implementation step of the present invention is as follows:
The two kinds of methods that are manufactured with that contain the iodine dried sweet potato:
That 1) selects fresh free from insect pests for use contains the iodine sweet potato, and water cleans up the back peeling, digs with sweet potato sweet potato is dug into the strand shape, passes through the air-dry mode drying of natural Exposure to Sunlight then, gets final product.
That 2) selects fresh free from insect pests for use contains the iodine sweet potato, deposited 40～45 days in shady and cool dry place, to improve the pol of sweet potato, to clean up through the iodine sweet potato peeling back water of depositing that contains, individual size according to sweet potato, being cut into halves to the quartering does not wait, sweet potato piece after will cutting is then put into pot and is fully boiled, and the moisture in the pot boiled dry, the pol of sweet potato is not lost, after the sweet potato cooling to be boiled, be placed on equably on the roasting cage and toast, baking temperature is controlled at 49 ℃～51 ℃, gets final product through baking in 24～25 hours.
The cultivation that contains the iodine sweet potato is promptly used the solid iodine fertilizer or is sprayed liquid iodine fertilizer by following two kinds of approach:
1) uses the solid iodine fertilizer.Select the sweet potato kind of high-quality, grow seedlings.Select for use plant the short strong sprout of first section of sweet potato stem and leaf seedling or second period 19～21 centimetres, before inserting seedling, play furrow wholely, and use sufficient base manure and the disposable solid iodine fertilizer that applies.The trend of furrow is " flat shoulder full waist " shape for well with East and West direction, furrow shape, and be organized into the short furrow of horizontal furrow, 0.9～1.1 meter in every furrow bag ditch, furrow are high 0.4～0.5 meter, 0.3～0.4 meter of furrow face width, the surface requirements of furrow is smooth, and is thick outer thin in earth requires, base manure and the dispensing of solid iodine fertilizer are at the furrow heart, and the amount of application of solid iodine fertilizer is 15mg/m
2～150mg/m
2After planting the potato seedling, evenly cover the furrow face of planting the sweet potato seedling with straw, after the potato seedling survives, make Miao Xin stretch out careless face, straw is then stayed the furrow face and is rotted naturally by it, earths up once in conjunction with repairing ditch after 30～35 days.Impose 1～2 time with fertilizer and composite fertilizer at the sweet potato growing period.Amount of iodine reaches 2.46mg/kg～11.60mg/kg in the sweet potato after the maturation;
2) spray liquid iodine fertilizer.Select the sweet potato kind of high-quality, grow seedlings.Select for use plant the short strong sprout of first section of sweet potato stem and leaf seedling or second period 19～21 centimetres, play furrow wholely before inserting seedling, and use sufficient base manure, base manure discharges at the furrow heart.The trend of furrow is " flat shoulder full waist " shape for well with East and West direction, furrow shape, and is organized into the short furrow of horizontal furrow, 0.9～1.1 meter in every furrow bag ditch, and furrow are high 0.4～0.5 meter, 0.3～0.4 meter of furrow face width, the surface requirements of furrow is smooth, and is thick carefully outer in earth requires.After planting the potato seedling, evenly cover the furrow face of planting the sweet potato seedling with straw, after the potato seedling survives, make Miao Xin stretch out careless face, straw is then stayed the furrow face and is rotted naturally by it, earths up once in conjunction with repairing ditch after 30～35 days.Impose 1～2 time with fertilizer and composite fertilizer at the sweet potato growing period, divide 5～6 times to foliage-spray liquid iodine fertilizer before sweet potato is gathered, the blanking time that at every turn sprays is basic identical, the amount of the spraying 12mg/m of liquid iodine fertilizer
2～150mg/m
2, amount of iodine reaches 0.35mg/kg～1.30mg/kg in the sweet potato of ripe back.
Iodine in solid iodine fertilizer and the liquid iodine fertilizer is from palmate class sea-tangle in the Laminariaceae, and this class sea-tangle is a kind of seaweeds phytoplankton, and it can absorb from seawater and a large amount of iodine of enrichment, and the content of iodine generally can reach 0.2%～0.5% of dry weight in the sea-tangle.It is 1～6 millimeter granular that such dried sea-tangle is ground into particle diameter, and crosses the low-grade diatomite of 80～100 purposes, evenly mixes with 1: 1～3 ratio, and then by the squash type comminutor, forming diameter is the granular solids iodine fertilizer of 2-6 millimeter.Low-grade diatomite itself is a kind of inorganic ore deposit fertilizer of mainly being made up of diatom remains and clay mineral; the diatom remains are because of there being special pore structure; and have a characteristic that adsorption capacity is big, can improve the soil and preserve soil moisture; with low-grade diatomite is that the iodine fertilizer of carrier can make the iodine in the sea-tangle slowly discharge; thereby improved the lasting effect of iodine fertilizer; the effect of playing the protection soil moisture content simultaneously and improving the soil; practice shows that suitable diatomite ratio can increase the uptake of crop to iodine in the solid iodine fertilizer.After the solid iodine fertilizer is made, demarcate the content of iodine of iodine fertilizer.
The making of liquid iodine fertilizer: dried sea-tangle and water are soaked with 1: 500～1: 800 ratio, the pH value of soaking water is 6.5～7.5, soaking temperature is 30～50 ℃, soak time is 2～4 hours, by soaking, about 80% iodide ion enters solution in the dried sea-tangle, and soak promptly becomes liquid iodine fertilizer, and the sea-tangle after the immersion can be used as the raw material that continues deep processing.After liquid iodine fertilizer is made, demarcate the content of iodine of liquid iodine fertilizer.
Embodiment 1
1) amount of iodine with free from insect pests is the fresh sweet potato of 2.46mg/kg, and water cleans up the back peeling, digs with sweet potato then sweet potato is dug into the strand shape;
That 2) will dig into the strand shape contains the iodine sweet potato, after the air-dry mode drying of natural Exposure to Sunlight, promptly becomes and contains the iodine dried sweet potato.
Embodiment 2
1) amount of iodine with free from insect pests is the fresh sweet potato of 11.60mg/kg, and water cleans up the back peeling, digs with sweet potato then sweet potato is dug into the strand shape;
That 2) will dig into the strand shape contains the iodine sweet potato, after the air-dry mode drying of natural Exposure to Sunlight, promptly becomes and contains the iodine dried sweet potato.
Embodiment 3
1) selects the fresh sweet potato that contains iodine 0.18mg/kg of fresh free from insect pests for use, deposited 40 days, to improve the pol of sweet potato in shady and cool dry place;
2) will clean up through the iodine sweet potato peeling back water of depositing that contains, according to the individual size of sweet potato, being cut into halves to the quartering does not wait, and the sweet potato piece after will cutting is then put into pot and fully boiled, and the moisture in the pot is boiled dry, and the pol of sweet potato is not lost;
3) after sweet potato the to be boiled cooling, be placed on equably on the roasting cage and toast, baking temperature is controlled at 49 ℃, through baking in 24 hours, promptly becomes and contains the iodine dried sweet potato.
Embodiment 4
1) selects the fresh sweet potato that contains iodine 0.48mg/kg of fresh free from insect pests for use, deposited 45 days, to improve the pol of sweet potato in shady and cool dry place;
2) will clean up through the iodine sweet potato peeling back water of depositing that contains, according to the individual size of sweet potato, being cut into halves to the quartering does not wait, and the sweet potato piece after will cutting is then put into pot and fully boiled, and the moisture in the pot is boiled dry, and the pol of sweet potato is not lost;
3) after sweet potato the to be boiled cooling, be placed on equably on the roasting cage and toast, baking temperature is controlled at 50 ℃, through baking in 24 hours, promptly becomes and contains the iodine dried sweet potato.
Embodiment 5
1) selects the fresh sweet potato that contains iodine 8.70mg/kg of fresh free from insect pests for use, deposited 43 days, to improve the pol of sweet potato in shady and cool dry place;
2) will clean up through the iodine sweet potato peeling back water of depositing that contains, according to the individual size of sweet potato, being cut into halves to the quartering does not wait, and the sweet potato piece after will cutting is then put into pot and fully boiled, and the moisture in the pot is boiled dry, and the pol of sweet potato is not lost;
3) after sweet potato the to be boiled cooling, be placed on equably on the roasting cage and toast, baking temperature is controlled at 51 ℃, through baking in 25 hours, promptly becomes and contains the iodine dried sweet potato.
Claims (2)
1. preparation method that contains the iodine dried sweet potato, what it is characterized in that selecting for use fresh free from insect pests contains the iodine sweet potato, and water cleans up the back peeling, digs with sweet potato sweet potato is dug into the strand shape, passes through the air-dry mode drying of natural Exposure to Sunlight then, gets final product;
The described kind method for planting that contains the iodine sweet potato comprises the steps:
1) selects the sweet potato kind of high-quality, grow seedlings, select for use plant the short strong sprout of first section of sweet potato stem and leaf seedling or second period 19～21 centimetres;
2) before inserting seedling, play furrow wholely, and use sufficient base manure and the disposable solid iodine fertilizer that applies, and the trend of furrow is an East and West direction, furrow shape is " the full waist of flat shoulder " shape, and be organized into the short furrow of horizontal furrow, 0.9～1.1 meter in every furrow bag ditch, furrow are high 0.4～0.5 meter, 0.3～0.4 meter of furrow face width, the surface requirements of furrow is smooth, thick outer thin in earth requires, base manure and the dispensing of solid iodine fertilizer are at the furrow heart, and the amount of application of solid iodine fertilizer is 15mg/m
2～150mg/m
2After planting the potato seedling, evenly cover the furrow face of planting the sweet potato seedling with straw, after the potato seedling survives, make Miao Xin stretch out careless face, straw is then stayed the furrow face and is rotted naturally by it, earths up once in conjunction with repairing ditch after 30～35 days, impose 1～2 time with fertilizer and composite fertilizer at the sweet potato growing period, amount of iodine reaches 2.46mg/kg～11.60mg/kg in the sweet potato after the maturation;
Perhaps before inserting seedling, play furrow wholely, and use sufficient base manure, the base manure dispensing is at the furrow heart, the trend of furrow is an East and West direction, furrow shape is " the full waist of flat shoulder " shape, and is organized into the short furrow of horizontal furrow, about 0.9～1.1 meter in every furrow bag ditch, furrow are high 0.4～0.5 meter, 0.3～0.4 meter of furrow face width, the surface requirements of furrow is smooth, and is thick outer thin in earth requires, after planting the potato seedling, evenly cover the furrow face of planting the sweet potato seedling with straw, after the potato seedling survives, make Miao Xin stretch out careless face, straw is then stayed the furrow face and is rotted naturally by it, in conjunction with repairing the ditch ridging once, impose 1～2 time with fertilizer and composite fertilizer after 30～35 days, before sweet potato is gathered, divide 5～6 times to foliage-spray liquid iodine fertilizer at the sweet potato growing period, the blanking time that at every turn sprays is basic identical, the amount of the spraying 12mg/m of liquid iodine fertilizer
2～150mg/m
2, amount of iodine reaches 0.35mg/kg～1.30mg/kg in the sweet potato of ripe back;
The preparation method of described solid iodine fertilizer is: it is 1～6 millimeter that dried sea-tangle is crushed to diameter, with the diatomite of crossing 80～100 mesh sieves with 1: 1～3 ratio, after evenly mixing, by the squash type comminutor, the formation diameter is 2～6 millimeters a granular solids iodine fertilizer, demarcates the content of iodine of this solid iodine fertilizer;
The preparation method of described liquid iodine fertilizer is: with dried sea-tangle and pH value be 6.5～7.5 and temperature be 30～50 ℃ water, with 1: 600～1: 800 ratio, soak after 2～4 hours, take out sea-tangle, soak is liquid iodine fertilizer, demarcates the content of iodine of this liquid iodine fertilizer.
2. preparation method that contains the iodine dried sweet potato, it is characterized in that: that selects fresh free from insect pests for use contains the iodine sweet potato, deposited 40～45 days in shady and cool dry place, to improve the pol of sweet potato, to clean up through the iodine sweet potato peeling back water of depositing that contains, individual size according to sweet potato, being cut into halves to the quartering does not wait, sweet potato piece after will cutting is then put into pot and is boiled, and the moisture in the pot boiled dry, after the sweet potato cooling to be boiled, be placed on equably on the roasting cage and toast, baking temperature is controlled at 49 ℃～51 ℃, gets final product through baking in 24～25 hours;
The described kind method for planting that contains the iodine sweet potato comprises the steps:
1) selects the sweet potato kind of high-quality, grow seedlings, select for use plant the short strong sprout of first section of sweet potato stem and leaf seedling or second period 19～21 centimetres;
2) before inserting seedling, play furrow wholely, and use sufficient base manure and the disposable solid iodine fertilizer that applies, and the trend of furrow is an East and West direction, furrow shape is " the full waist of flat shoulder " shape, and be organized into the short furrow of horizontal furrow, 0.9～1.1 meter in every furrow bag ditch, furrow are high 0.4～0.5 meter, 0.3～0.4 meter of furrow face width, the surface requirements of furrow is smooth, thick outer thin in earth requires, base manure and the dispensing of solid iodine fertilizer are at the furrow heart, and the amount of application of solid iodine fertilizer is 15mg/m
2～150mg/m
2After planting the potato seedling, evenly cover the furrow face of planting the sweet potato seedling with straw, after the potato seedling survives, make Miao Xin stretch out careless face, straw is then stayed the furrow face and is rotted naturally by it, earths up once in conjunction with repairing ditch after 30～35 days, impose 1～2 time with fertilizer and composite fertilizer at the sweet potato growing period, amount of iodine reaches 2.46mg/kg～11.60mg/kg in the sweet potato after the maturation;
Perhaps before inserting seedling, play furrow wholely, and use sufficient base manure, the base manure dispensing is at the furrow heart, the trend of furrow is an East and West direction, furrow shape is " the full waist of flat shoulder " shape, and is organized into the short furrow of horizontal furrow, about 0.9～1.1 meter in every furrow bag ditch, furrow are high 0.4～0.5 meter, 0.3～0.4 meter of furrow face width, the surface requirements of furrow is smooth, and is thick outer thin in earth requires, after planting the potato seedling, evenly cover the furrow face of planting the sweet potato seedling with straw, after the potato seedling survives, make Miao Xin stretch out careless face, straw is then stayed the furrow face and is rotted naturally by it, in conjunction with repairing the ditch ridging once, impose 1～2 time with fertilizer and composite fertilizer after 30～35 days, before sweet potato is gathered, divide 5～6 times to foliage-spray liquid iodine fertilizer at the sweet potato growing period, the blanking time that at every turn sprays is basic identical, the amount of the spraying 12mg/m of liquid iodine fertilizer
2～150mg/m
2, amount of iodine reaches 0.35mg/kg～1.30mg/kg in the sweet potato of ripe back;
The preparation method of described solid iodine fertilizer is: it is 1～6 millimeter that dried sea-tangle is crushed to diameter, with the diatomite of crossing 80～100 mesh sieves with 1: 1～3 ratio, after evenly mixing, by the squash type comminutor, the formation diameter is 2～6 millimeters a granular solids iodine fertilizer, demarcates the content of iodine of this solid iodine fertilizer;
The preparation method of described liquid iodine fertilizer is: with dried sea-tangle and pH value be 6.5～7.5 and temperature be 30～50 ℃ water, with 1: 600～1: 800 ratio, soak after 2～4 hours, take out sea-tangle, soak is liquid iodine fertilizer, demarcates the content of iodine of this liquid iodine fertilizer.
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| CN102783624A (en) * | 2011-05-20 | 2012-11-21 | 谢伟 | Dried selenium-enriched purple sweet potato processing technology |
| CN102783623A (en) * | 2011-05-20 | 2012-11-21 | 谢伟 | Selenium-enriched purple sweet potato powder processing technology |
| CN112841577A (en) * | 2021-01-28 | 2021-05-28 | 莫海南 | Making method of sweet waxy cassava slice leisure food |
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| 番薯栽培技术. 广东省农业厅生产处 广东省科协普及部，51-53，广东科技出版社. 1982 |
| 番薯栽培技术. 广东省农业厅生产处 广东省科协普及部，51-53，广东科技出版社. 1982 * |
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