CN102771382A - Cultivating method for japonica rice variety strong in lodging resistance and suitable for mechanical transplanting of rice - Google Patents
Cultivating method for japonica rice variety strong in lodging resistance and suitable for mechanical transplanting of rice Download PDFInfo
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Abstract
The invention discloses a cultivating method for a japonica rice variety strong in lodging resistance and suitable for mechanical transplanting of rice. The cultivating method comprises a first step of choosing strong-root strong-stalk large-ear high-quality intermediate materials and a main-push variety with wide adaptability to undergo hybrid matching; a second step of choosing seeds with strong bud potential in an F2 generation to cultivate the seeds to a two-leaf one-tip stage, choosing a plurality of strong seedling bodies after treatment to perform transplantation, selecting single plants with good comprehensive agronomic characters at a heading stage to perform flag leaf separation aging experiments to perform primary selection, and performing a re-selection at a mature stage; a third step of performing dense sowing in an F3 generation to an F5 generation according to the requirements of mechanical transplanting of the rice and seedling raising, surveying seedling quality at a seedling age of about 30d, choosing strong seedling strains to perform transplantation, performing a high ear fertilizer test, and choosing lodging-resistant and high-quality strains which change color smoothly; and a fourth step of performing strain comparison tests of mechanical transplanting of the rice, and selecting high-quality high-yield lodging-resistant strains. The cultivated variety can be above high-quality rice of level 3 of the national standard, and high and stable yield and efficient production are achieved.
Description
Technical field
The present invention relates to the breeding method of a plant species, more specifically to a kind of suitable machine transplanting of rice seedling, the strong anti-breeding method of japonica rice variety.
Background technology
Paddy rice is the first crop of China, and the paddy rice of China's cultivation mainly contains two subspecies, i.e. Xian subspecies and round-grained rice subspecies.The pressure of China's grain security is big, and high yield is the eternal theme of rice breeding always.Under certain harvest index, increase per unit area yield and must improve biological yield, improve biological yield and certainly will increase plant height, also increase the risk of lodging.Along with rural laborer's transfer, light cultivation mode ratio improves constantly, especially machine transplanting of rice seedling; Machine transplanting of rice seedling planting patterns is prone to two problems on producing: 1. machine transplanting of rice seedling quality is on the weak side, and machinery is planted severely injuredly in machine transplanting of rice process, and the phase of living of turning green is long; 2. machine transplanting of rice seedling colony is bigger than normal easily, is strengthening the lodging risk." moving behind the preceding nitrogen " (general basic fetilizer for tillering: ear manuer is main with 6:4) that the colony quality culture technique system of promoting is advocated; Can better satisfy paddy rice needs fertile characteristic and improves fertilizer utilization efficiency; Wherein short fertilizers for potted flowers (generally using period) at leaf age remainder 4.0-3.5; The length of easy-to-draw long shoot culm base internode reduces the lodging tolerance of plant.Select the strain of the strong big fringe type of stalk, can effectively improve anti-the planting of plant and hinder and level resistant to lodging, problem such as high-quality is also comed one after another but the fringe kernel structure is owed to coordinate to be in the milk not with fringe greatly.Cultivate suitable machine transplanting of rice seedling, anti-ly fall by force, the good quality and high output japonica rice variety, satisfy the production requirement of efficient, stable high yield, high-quality, become japonica rice breeding problem demanding prompt solution.
Summary of the invention
The objective of the invention is to solve above-mentioned technical bottleneck, a kind of suitable machine transplanting of rice seedling is provided, anti-ly falls by force, good quality and high output japonica rice variety selection, thereby can promote better to produce realizes high-quality, highly efficient and productive, ecological, safe developing goal.
In order to solve the problems of the technologies described above; The applicant finds that the technical scheme that the present invention adopted can well reach goal of the invention through for many years repetition test in many cultivation schemes and selection; Breeding method of the present invention is based on the how anti-breed breeding program of the good quality and high output of routine; Reinforcement is coordinated individual selection to the strong stalk of strong root, storehouse, source, has improved following committed step, as follows:
A) select for use the kind of promoting mainly that has suit property in the production to hybridize combo with the intermediate materials of the strong big fringe high-quality of stalk of strong root;
B) at F
2The seed that the Dai Xuanya gesture is strong is sowed at the bottom and has in the foam plate hole of nylon wire, places clear water reserviors to be cultured to one heart stage of two leaves, adopts intermittently drought to coerce processing afterwards, selects the individuality of many strong seedlings to transplant; Select heading stage the good individual plant of comprehensive agronomy proterties to carry out the sword-like leave old and feeble experiment primary election of exsomatizing, strong at 3 internode fracture resistence forces of maturing stage final election stem culm base, the root pocket is big, the individual plant of big grain in the fringe base portion full grains, high-quality;
C) at F
3To F
5In generation, carried out heavy seeding test by machine transplanting of rice seedling seedling requirements, about length of time rice seedlings grow 30d or most strain system mould dish and the yellow seedling occurs (the normal machine transplanting of rice length of time rice seedlings grow is 18-20 days, surpasses 10 days length of time rice seedlings grow, is exactly about length of time rice seedlings grow 30d.) investigating seedling quality, the strong seedling strain of choosing system transplants; Later stage is carried out the test of high ear manuer, in general, strengthens selection pressure through high ear manuer test test back, more help eliminating being prone to lodging, loving blue or green, quality individual plant not up to standard, the maturing stage select resistant to lodging, annesl of later stage along transfer, strain best in quality is;
D) at the stable machine transplanting of rice seedling variety test of lines that carries out from generation to generation, select the strong strain resistant to lodging of good quality and high output.
Beneficial effect: compared with prior art; Advantage of the present invention is: adopt the kind that the present invention breeds or be; Can reach that 3 grades of superior rices of GB are above, the target of stable high yield (being more than the large tracts of land machine transplanting of rice per mu yield 700kg) and High-efficient Production, have benefited from following characteristic:
1. the anti-ability of wound of planting is strong, and turning green, it is fast to live: the typing strain is coerced through drought and is selected well developed root system, individuality that fresh weight is high, and seedling quality is good, and in the thickness of sowing that machine transplanting of rice seedling requires, even ultra length of time rice seedlings grow 10d, the ratio that yellow weak seedling occurs is low, obviously is better than general kind.Behind machine transplanting of rice seedling, it is little that machinery is planted the ability of wound, turns green that it is fast to live, especially under rough sledding such as hot weather and sand loam soil partially;
2. fertilizer resistance anti-lodging; Nitrogen utilization efficiency is high: to the indirect selection of stem culm base 3 internode fracture resistence forces and root pocket amount; Typing strain stem stalk is more sturdy, base portion 3-4 internode is short and thick, stem stalk wall thickness and flexible, and is resistant to lodging strong, even in the condition of high ear manuer of later stage; Also do not receive the influence of heavy rain and typhoon, greatly reduce later stage lodging risk.Simultaneously, on basis resistant to lodging, can increase and execute ear manuer, improve nitrogen utilization efficiency;
The later stage annesl along transfer, best in quality: because of sword-like leave is exsomatized old and feeble slow, root pocket amount greatly, the selection that the grains are plump of fringe base portion; Typing strain later stage well developed root system and energetic; Photosynthetic efficiency height and longer duration, coordinate with " storehouse " in " source ", and grouting is steadily; Fringe portion is unanimous between the higher and lower levels, and annesl is along transferring.Even in the condition of high ear manuer, blue or green phenomenon does not appear loving in the later stage.
Embodiment
Through concrete embodiment the present invention is further specified below; Should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the principle of the invention; Can also make some modification and improvement, these also should be regarded as belonging to protection scope of the present invention.
Embodiment:
The precocious late round-grained rice new lines town rice of cultivating with Jiangsu Feng Yuan kind industry company and Jiangsu Hilly Ground Zhenjiang Agriculture Science Research Institute cooperation 8841 is embodiment.
1. seed selection is passed through:
1) positive season in 2004, make female parent with the high yielding variety town rice with suit property 88, the intermediate materials town rice 4041 of strengthening the big fringe high-quality of stalk with strong root makes paternal hybrid, gets F
050 in seed; Wherein pressing down rice 4041 is offsprings of town rice 78 and No. 6 hybridization of phoenix tail.
2) winter-2005 year spring in 2004, F0 is sowed, obtain F in Lingshui, Hainan
1Plant 20 strains mix receipts 250 gram seeds and promptly get F after the impurity elimination
2For seed;
3) positive season in 2005, the plantation F in the Jurong, Jiangsu
2Generation.Selecting seedling stage strong 4176 seed of bud gesture to be sowed at the bottom has in the foam plate hole of nylon wire; Place clear water reserviors to be cultured to one heart stage of two leaves; Processing is coerced in employing afterwards intermittently drought; Select 1656 shoot transplanting equipments of many strong seedlings (strong seedling refers to fresh weight and reaches more than the 0.5g/ strain individuality of Bai Genliang more than 15); Select the stripped old and feeble experiment of the good individual plant of comprehensive agronomy proterties 98 strains carrying out sword-like leave heading stage; The stripped old and feeble experiment of sword-like leave is that the test tube that 2 sword-like leaves place laboratory band water 1/3 is got in every strain; The old and feeble light individuality of the blade yellow of selecting and remain behind the 7d, strong at 3 internode fracture resistence forces of maturing stage final election stem culm base, the root pocket is big, the grains are plump for the fringe base portion, article of fine quality in big individual plant 45 strains promptly get F
3For seed.
4) positive season in 2006, the plantation F in the Jurong, Jiangsu
3Generation.By machine transplanting of rice seedling seedling requirement heavy seeding seedling test, length of time rice seedlings grow 30d investigates seedling quality, and the strong seedling strain of selecting and remain is 25 transplantings; Later stage is carried out the test of high ear manuer, resistant to lodging, annesl of the later stage of selecting and remain along transfer, strain best in quality be 5 totally 30 strains promptly get F
4Generation; Wherein high ear manuer test refers in leaf age remainder 4.0-3.5 uses ear manuer period, amounts to purity nitrogen 9 ~ 10kg.
5) positive season in 2007, the plantation F in the Jurong, Jiangsu
4In generation, for processing, 4 strains of finally selecting and remain are that 20 strains promptly get F with F3
5For seed;
6) positive season in 2008, the plantation F in the Jurong, Jiangsu
5In generation, for processing, 4 strains of finally selecting and remain are that 8 strains promptly get F with F3
6For seed;
7) winter-2009 year spring in 2008, the plantation F in Lingshui, Hainan
6In generation, 5 strains of selecting and remain are that 15 strains promptly get F
7For seed;
8) positive season in 2009, the plantation F in the Jurong, Jiangsu
7In generation,, 15 strains were, elected 5 stable strains;
9) positive season in 2010, carry out machine transplanting of rice seedling variety test of lines in the Jurong, Jiangsu, select 1 of the strong strain resistant to lodging of good quality and high output, tentatively titled town rice 8841;
10) positive season in 2011, to carry out machine transplanting of rice seedling and show test in this institute base of holding or participate in a prayer service at a temple, average yield per mu reaches 712.85kg, and comparison is according to No. 23, military fortune round-grained rice and No. 11 raising the output 8.15% and 6.56% of town rice respectively.
2. feature
A) yield potentiality is big: this strain fringe grain is coordinated, and colony is sane, and the above fringe kernel structure of machine transplanting of rice seedling per mu yield 700kg is: every mu of effective fringe is about 200,000; Every total grain panicle is counted the 140-150 grain; Ripening rate is more than 90%, and thousand kernel weight 27-28 gram is about the 163 days time of infertility.
B) article are of fine quality: the grains are plump is wealthy avette, and clever shell stalk is yellow, and commodity is good.Show the test of food quality inspection center of the test sampling censorship Ministry of Agriculture according to slave rice transplanting in 2011: brown rice yield 84.2%, polished rice rate 76.1%, head rice rate 69.5%, grain length 5.4mm; Aspect ratio 1.9, the white rate 25% of chalk, disappear 7 grades of values of chalkiness degree 3.5%, alkali; Glue denseness 84mm, amylose content 16.1%, 1 grade of transparency; Physics and chemistry divided 70 fens, and physical and chemical index reaches state and issues the superior rice grade III Standard, had solved the big fringe not phenomenon of high-quality of being in the milk.
C) suitable machine transplanting of rice seedling: town rice 8841 belongs to inclined to one side large-spike cultivar, and the stem stalk is sturdy, well developed root system, and seedling quality is good, and the anti-ability of wound of planting is strong, turns green alive soon; Colony's stem tiller number is steady, and the percentage of earbearing tiller is high, has overcome the current not shortcoming of easy-regulating of varietal population of promoting mainly; Plant is shorter strong, about plant height 102cm, and fertilizer resistance anti-lodging, the lodging risk is little.
D) the comprehensive agronomy proterties is good: this strain seedling low body is strong, and tillering ability is medium, and colony is sane, and the percentage of earbearing tiller is high; Plant type is compact, and the leaf appearance is tall and straight, receives the light attitude good, and functional period is long, and it is delicate and pretty to grow; The fringe layer is neat, and fringe shape half is upright, and the later stage annesl is along transferring ripe lover.
Claims (4)
1. a suitable machine transplanting of rice seedling, the strong anti-breeding method that falls japonica rice variety is characterized in that, may further comprise the steps:
A) select the intermediate materials of promoting mainly kind and the strong big fringe high-quality of stalk of strong root that has suit property in the production for use, hybridize combo;
B) at F
2The seed that the Dai Xuanya gesture is strong is sowed at the bottom and has in the foam plate hole of nylon wire, places clear water reserviors to be cultured to one heart stage of two leaves, adopts intermittently drought to coerce processing afterwards, selects the individuality of many strong seedlings to transplant; Select heading stage the good individual plant of comprehensive agronomy proterties to carry out the sword-like leave old and feeble experiment primary election of exsomatizing, strong at 3 internode fracture resistence forces of maturing stage final election stem culm base, the root pocket is big, the individual plant of big grain in the fringe base portion full grains, high-quality;
C) at F
3To F
5In generation, carried out heavy seeding test by machine transplanting of rice seedling seedling requirements, about length of time rice seedlings grow 30d or most strain system mould dish and the yellow seedling occurs and investigate seedling quality, the transplanting of the strong seedling strain of choosing system; Later stage is carried out the test of high ear manuer, the maturing stage select resistant to lodging, annesl of later stage along transfer, strain best in quality system;
D) at the stable machine transplanting of rice seedling variety test of lines that carries out from generation to generation, select the strong strain resistant to lodging of good quality and high output.
2. suitable machine transplanting of rice seedling according to claim 1, the strong anti-breeding method of japonica rice variety, it is characterized in that: step B), described many strong seedling individualities refer to fresh weight and reach more than the 0.5g/ strain individuality of Bai Genliang more than 15.
3. suitable machine transplanting of rice seedling according to claim 1, the strong anti-breeding method of japonica rice variety; It is characterized in that: step B); The old and feeble experiment of exsomatizing of described sword-like leave is meant that every strain gets the test tube that 2 sword-like leaves place laboratory band water 1/3, the old and feeble light individuality of the blade yellow of selecting and remain behind the 7d; Described final election, be strong at 3 internode fracture resistence forces of maturing stage stem culm base, the root pocket big, the individual plant of big grain in the fringe base portion full grains, high-quality.
4. suitable machine transplanting of rice seedling according to claim 1, the strong anti-breeding method of japonica rice variety, it is characterized in that: step C), the method for described high ear manuer test is: use ear manuer period in leaf age remainder 4.0-3.5, amount to purity nitrogen 9 ~ 10kg.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102934606A (en) * | 2012-12-04 | 2013-02-20 | 江苏里下河地区农业科学研究所 | Hybrid rice mechanical seed production technology |
| CN105284589A (en) * | 2014-06-20 | 2016-02-03 | 重庆中一种业有限公司 | Cultivation method for lodging-resistant rice variety |
| CN105794627A (en) * | 2016-03-03 | 2016-07-27 | 安徽宇顺种业开发有限公司 | Cultivation method of paddy-upland dual-purpose type hybrid rice |
| CN106034775A (en) * | 2016-06-08 | 2016-10-26 | 江苏省农业科学院宿迁农科所 | Method for evaluating auxiliary rice breeding by using lodging resistance indexes |
| CN108967183A (en) * | 2018-08-03 | 2018-12-11 | 江苏省农业科学院宿迁农科所 | A kind of high-quality long grain shape Japonica two line hybrid rice method resistant to lodging |
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| CN108967183A (en) * | 2018-08-03 | 2018-12-11 | 江苏省农业科学院宿迁农科所 | A kind of high-quality long grain shape Japonica two line hybrid rice method resistant to lodging |
| CN108967183B (en) * | 2018-08-03 | 2021-07-06 | 江苏省农业科学院宿迁农科所 | Breeding method of high-quality lodging-resistant long-grain japonica rice |
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Effective date of registration: 20210927 Address after: 212400 Hong Jing Road, Jurong City, Zhenjiang, Jiangsu Province, No. 1 Patentee after: JIANGSU FOOTHILL ZHENJIANG AGRICULTURE Research Institute Address before: 212400, Huayang Road, Zhenning, Jurong, Zhenjiang, Jiangsu 112, China Patentee before: JIANGSU FENGYUAN SEED INDUSTRY Co.,Ltd. Patentee before: JIANGSU FOOTHILL ZHENJIANG AGRICULTURE Research Institute |