CN112136686A - Method for pollinating japonica hybrid rice by mechanical assistance - Google Patents
Method for pollinating japonica hybrid rice by mechanical assistance Download PDFInfo
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- CN112136686A CN112136686A CN202011079312.8A CN202011079312A CN112136686A CN 112136686 A CN112136686 A CN 112136686A CN 202011079312 A CN202011079312 A CN 202011079312A CN 112136686 A CN112136686 A CN 112136686A
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- japonica rice
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
- A01H1/00—Processes for modifying genotypes ; Plants characterised by associated natural traits
- A01H1/02—Methods or apparatus for hybridisation; Artificial pollination ; Fertility
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Abstract
The invention provides a method for pollinating japonica rice by mechanically assisting hybridization, belonging to the field of agricultural rice seed production, and the method comprises the following steps: the planting row ratio of the male parent of the hybrid japonica rice to the female parent of the hybrid japonica rice is 1 (5-8), and the mechanical flour driving speed is 20-30 km/h. According to the method for pollinating the hybrid japonica rice by mechanical assistance, the planting row ratio of the male parent to the female parent of the hybrid japonica rice is 1 (5-8), and the speed of mechanical pollination is 20-30 kilometers per hour, so that the effective ear number of the hybrid japonica rice is increased by more than 1.1 times compared with that of the hybrid japonica rice planted in the traditional condition by 1:3, the maturing rate is more than 50%, the yield is increased by more than 1.7 times, and the pollination dispelling efficiency is increased by 8-12 times.
Description
Technical Field
The invention belongs to the field of agricultural rice seed production, and relates to a method for pollinating japonica hybrid rice by mechanical assistance.
Background
The hybrid japonica rice in China is one of the most possible food crops with breakthrough progress, leap-type development and the largest contribution rate to the total food yield in the near term, and is a new growth point for increasing the food yield.
One important factor restricting the popularization and application of the japonica hybrid rice is that the seed production of the hybrid rice has low seed setting rate, insufficient effective ears and low yield. Compared with hybrid indica rice, the pollen amount of the male parent for hybrid japonica rice seed production is smaller, and meanwhile, the seed production yield is further reduced by adopting an artificial pollination mode in traditional agriculture.
Disclosure of Invention
The invention aims to provide a method for pollinating japonica rice by mechanical assistance. The method provided by the invention can better improve the seed production yield.
The invention provides a method for pollinating japonica rice by mechanically assisting hybridization, which comprises the following steps:
the planting row ratio of the male parent of the hybrid japonica rice to the female parent of the hybrid japonica rice is 1 (5-8), and the mechanical flour driving speed is 20-30 km/h.
Specifically, the planting row ratio is 1 (5-8).
Specifically, the mechanical powder driving speed is 22-28 km/h.
Specifically, the mechanical powder driving speed is 25-27 km/h.
Specifically, the machine is a tractor.
Further, the mechanical powder removing method comprises the following steps: and respectively fixing two ends of a rope on two tractors to enable the rope to be in contact with the male parent, and popping up pollen of the male parent by the rope when the tractors pull the rope.
Specifically, the male parent of the hybrid japonica rice is restoring japonica rice.
Specifically, the female parent of the hybrid japonica rice is sterile japonica rice.
Compared with the prior art, the invention has the beneficial effects that:
according to the method for pollinating the hybrid japonica rice by mechanical assistance, the planting row ratio of the male parent to the female parent of the hybrid japonica rice is 1 (5-8), and the speed of mechanical pollination is 20-30 kilometers per hour, so that the effective ear number of the hybrid japonica rice is improved by more than 1.1 times compared with that of the hybrid japonica rice planted under the traditional condition by 2:6, the maturing rate is up to more than 50%, the yield is improved by more than 1.7 times, and the pollination dispelling efficiency is improved by 8-12 times.
Detailed Description
The present invention is further illustrated by the following examples. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and process are given, but the scope of the present invention includes, but is not limited to, the following embodiments.
Comparative example
The traditional artificial powder removing mode for hybrid japonica rice seed production has the speed of about 5 kilometers per hour, the pollen bounce distance is short, 4 rows of female parent compartments can be covered (the row spacing of machine-transplanted female parents is 25 centimeters), but in order to ensure the effective ears of the female parents, the planting row ratio of the male parents to the female parents is generally set to be 1:3, usually two rows of male parents are planted, 6 rows of female parents are planted, and the specific data are shown in table 1.
TABLE 1 setting percentage for different planting row ratios under traditional vermicelli-driving conditions
Example 1
The hybrid japonica rice of the embodiment of the invention is Shenyou 26 (Shenyou 26 is selected and bred by Shanghai agricultural science institute and approved by Shanghai variety, and the specific application number is Shanghai examined rice 2017001), the male parent of the hybrid japonica rice applies for the new species right of the national plant for Shenhui 26 (application number is 20162324.3), the female parent of the hybrid rice applies for Shenhui 9A to obtain the new species right of the national plant (CNA20110864.8), and the Shenyou 26, the Shenhui 26 and the Shen 9A can obtain materials from breeding units by signing and drawing a variety agreement. The mechanical flour driving speed is 20 kilometers per hour, the planting row ratio of the male parent of the hybrid japonica rice to the female parent of the hybrid japonica rice is 1 (5-8), when the hybrid japonica rice is realized, the machine can be a tractor, two ends of a rope are respectively fixed on two tractors, the rope is in contact with the male parent, when the tractor pulls the rope, pollen of the male parent is popped up by the rope, the popped pollen is awarded to the female parent, and the specific seed production yield is shown in table 2.
TABLE 2 seed production yield for different planting row ratios
As can be seen from Table 2, compared with the comparative example and the planting row ratio 1 (3-4.5), the planting row ratio 1 (5-8) provided by the embodiment of the invention has higher seed setting rate and yield, and the seed production yield is highest and reaches 215.7/(kg-mu) at the planting row ratio of 1: 5.
Example 2
The hybrid japonica rice of the embodiment of the invention is Shenyou 26 (Shenyou 26 is selected and bred by Shanghai agricultural science institute and approved by Shanghai city variety, and the specific application number is Shanghai trial rice 2017001), the male parent of the hybrid japonica rice applies for the new variety right of the national plant for Shenhui 26 (application number: 20162324.3), and the female parent of the hybrid japonica rice applies for Shen 9A to obtain the new variety right of the national plant (CNA 20110864.8). The planting row ratio of the male parent of the hybrid japonica rice to the female parent of the hybrid japonica rice is 1 (5-8), the mechanical flour driving speed is 20-30 kilometers per hour, when the hybrid japonica rice is realized, the machine can be a tractor, two ends of a rope are respectively fixed on two tractors, the rope is in contact with the male parent, when the tractor pulls the rope, pollen of the male parent is popped up by the rope, the popped pollen is awarded to the female parent, and the specific seed production yield is shown in table 3.
TABLE 3 seed production yield at different mechanical powder-driving speeds
As can be seen from Table 3, as the powder driving speed of the tractor is increased, the setting rate is increased, the difference of the setting rate is not obvious under the condition that the powder driving speed is 20-30 km/h, and the setting rate is obviously higher than the setting rate of 15 km/h and a comparative example. If the powder removing speed is higher than 30 km/h, plants are obviously damaged, and the yield loss is caused.
When the planting row ratio of the male parent to the female parent of the hybrid japonica rice is 1 (5-8), and the mechanical pollen-driving speed is 20-30 km/h, the row spacing of the male parent and the female parent is usually 25 cm, the pollen bounce distance of the male parent exceeds 4 meters, the female parent compartment can be completely covered, and the seed setting rate can reach 60.3 percent at most; the seed setting rate of the female parent is 30.1 percent which is far higher than that of the female parent with the 2:6 row ratio under the traditional flour-driving condition, the actual seed production yield can reach 215.7 kg/mu at most, and the traditional flour-driving yield is only 124.3 kg/mu. Simultaneously, machinery is driven powder speed and is more than artifical powder speed of driving by 4 times high, and standardized field width 35 meters, the distance sets up 2 ~ 3 times standardized field width between two tractors, and the distance can be 70 or 105 meters between two tractors promptly, and the tradition is driven powder width and is 35 meters, and the efficiency that the powder was driven by the tractor to the manual work of tradition efficiency of driving by a wide margin promotes.
Claims (8)
1. A method for pollinating japonica hybrid rice by mechanical assistance, which is characterized by comprising the following steps:
the planting row ratio of the male parent of the hybrid japonica rice to the female parent of the hybrid japonica rice is 1 (5-8), and the mechanical flour driving speed is 20-30 km/h.
2. The method according to claim 1, wherein the planting row ratio is 1 (5-8).
3. The method according to claim 1, wherein the mechanical powder driving speed is 22 to 28 km/h.
4. The method of claim 1, wherein the mechanical dusting speed is from 25 to 27 km/h.
5. The method of claim 1, wherein the machine is a tractor.
6. The method of claim 5, wherein the method of mechanically dislodging the powder comprises: and respectively fixing two ends of a rope on two tractors to enable the rope to be in contact with the male parent, and popping up pollen of the male parent by the rope when the tractors pull the rope.
7. The method according to claim 1, wherein the male parent of the hybrid japonica rice is restorer japonica rice.
8. The method as claimed in claim 1, wherein the female parent of the hybrid japonica rice is sterile japonica rice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011079312.8A CN112136686A (en) | 2020-10-10 | 2020-10-10 | Method for pollinating japonica hybrid rice by mechanical assistance |
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| CN202011079312.8A CN112136686A (en) | 2020-10-10 | 2020-10-10 | Method for pollinating japonica hybrid rice by mechanical assistance |
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| CN202011079312.8A Pending CN112136686A (en) | 2020-10-10 | 2020-10-10 | Method for pollinating japonica hybrid rice by mechanical assistance |
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Citations (5)
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|---|---|---|---|---|
| CN1799333A (en) * | 2005-12-27 | 2006-07-12 | 辽宁省稻作研究所 | High-yield seeds production technique for japonica hybrid rice |
| CN101147464A (en) * | 2007-11-02 | 2008-03-26 | 辽宁省稻作研究所 | Japonica type hybridized rice high production breeding method |
| CN101171905A (en) * | 2007-09-11 | 2008-05-07 | 江苏徐淮地区徐州农业科学研究所 | Hybridization non-glutinous rice combination 9 excellent 418 high production seed producing method |
| CN102835302A (en) * | 2012-09-12 | 2012-12-26 | 上海市农业科学院 | Method for producing seeds of hybrid japonica rice mechanically and fully |
| CN107018893A (en) * | 2017-06-08 | 2017-08-08 | 天津市农作物研究所 | A kind of harvesting method of hybrid rice seed mechanization |
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2020
- 2020-10-10 CN CN202011079312.8A patent/CN112136686A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1799333A (en) * | 2005-12-27 | 2006-07-12 | 辽宁省稻作研究所 | High-yield seeds production technique for japonica hybrid rice |
| CN101171905A (en) * | 2007-09-11 | 2008-05-07 | 江苏徐淮地区徐州农业科学研究所 | Hybridization non-glutinous rice combination 9 excellent 418 high production seed producing method |
| CN101147464A (en) * | 2007-11-02 | 2008-03-26 | 辽宁省稻作研究所 | Japonica type hybridized rice high production breeding method |
| CN102835302A (en) * | 2012-09-12 | 2012-12-26 | 上海市农业科学院 | Method for producing seeds of hybrid japonica rice mechanically and fully |
| CN107018893A (en) * | 2017-06-08 | 2017-08-08 | 天津市农作物研究所 | A kind of harvesting method of hybrid rice seed mechanization |
Non-Patent Citations (5)
| Title |
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| 程灿等: "杂交粳稻新组合申优17机械化制种技术 ", 《杂交水稻》 * |
| 程灿等: "杂交粳稻申优693高产制种技术 ", 《杂交水稻》 * |
| 程灿等: "父母本行比及母本株距对杂交粳稻花优14母本机插制种产量的影响 ", 《杂交水稻》 * |
| 苏玉安等: "杂交粳稻旱种新组合辽优5273选育与应用 ", 《辽宁农业科学》 * |
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Application publication date: 20201229 |