Method for improving uniformity of rice machine-transplanted population

A rice machine and evenness technology, applied in the direction of rice cultivation, etc., can solve the problems of low seeding rate, poor blanket formation, and high seedling leakage rate, and achieve the effects of improving uniformity, increasing yield and saving costs.

Pending Publication Date: 2020-10-30
CHINA NAT RICE RES INST
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  • Application Information

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Problems solved by technology

[0003] The existing machine-transplanted rice technology is applied to hybrid rice. The sowing amount is large, the quality of seedlings is poor, the rate of machine-transplanted seedlings is high, and the number of machine-transplanted seedlings is uneven, resulting in uneven populations of hybrid rice, and it is difficult to exert the potential of hybrid rice to increase production.
If the sowing amount is low and the matting performance is poor, it cannot be transplanted by machine, and the missing seedling rate is high, and seedlings need to be replenished
The price of hybrid rice seeds is high, the seeding rate of machine transplanting is high, the amount of seeds used is large, the cost of seeds is high, and the quality of seedlings is poor, which restricts the growth advantage of hybrid rice
For a long time, the problem of mechanical transplanting of hybrid rice has not been solved, which has become a technical bottleneck for the further promotion of hybrid rice

Method used

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  • Method for improving uniformity of rice machine-transplanted population
  • Method for improving uniformity of rice machine-transplanted population
  • Method for improving uniformity of rice machine-transplanted population

Examples

Experimental program
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Effect test

Embodiment 1

[0040] The indica-japonica hybrid rice variety Yongyou 1540 was sown in a targeted and quantitative position and compared with transplanting with a seedling machine and a traditional seeder. The test was carried out in Pingyao Town, Yuhang District, Hangzhou City.

[0041] 1) Select a 9-inch seedling tray, the sowing method is drill, and the sowing (traditional assembly line sowing method) is used as a control. sowing. The sowing amount of the tray is calculated according to the number of seedlings taken and 3.5 and 2.5 seeds in the seedling hole. As in Table 1.

[0042] Table 1 Sowing amount and sowing method of different specifications

[0043]

[0044]

[0045] 2) Machine transplanting: The rice seedlings are 20 days old and machine-transplanted with a reel, and the number of horizontal seedlings is matched with the sowing method to achieve 14, 16 and 18 horizontal seedlings, and 34 and 40 vertical seedlings. The seedling leakage rate and the ratio of 2 to 3 seedl...

Embodiment 2

[0049] Comparison of Oriented Seeder Transplantation and Traditional Seeder Transplantation of Indica-Japonica Hybrid Rice Variety Yongyou 538

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Abstract

The invention provides a method for improving the uniformity of a rice machine-transplanted population, and belongs to the technical field of rice planting. The method for improving the uniformity ofthe rice machine-transplanted population comprises the steps of directional, quantitative and positioning sowing and machine-transplanted quantitative and positioning seedling taking. According to themethod, a sowing mode of directional, quantitative and positioning sowing is utilized, a corresponding machine-transplanted seedling taking mode is matched, the problems that the number of traditional machine-transplanted seedlings is not uniform, and the seedling leakage rate is high are solved, uniform machine transplanting is achieved, and the uniformity of the rice population is improved; andmeanwhile, the sowing amount under the target machine-transplanted seedling number and the cost of hybrid rice machine-transplanted seeds are reduced, the yield of hybrid rice is increased, and the yield and efficiency of hybrid rice production are increased.

Description

technical field [0001] The invention belongs to the technical field of rice planting, and in particular relates to a method for improving the uniformity of rice machine-transplanted populations. Background technique [0002] In the late 1970s, hybrid rice was successfully bred and commercialized in China. The area and yield of hybrid rice continued to increase, making a significant contribution to ensuring food security in my country and the world. At present, the planting area of ​​hybrid rice accounts for more than 50% of the rice area in my country, and plays an important role in rice production. With the development of social economy and the transfer of rural labor force to other industries, the labor force engaged in rice production has decreased and the cost has increased significantly, and rice production requires mechanized operations. The main constraint factor of rice production mechanization is machine transplanting, especially hybrid rice machine transplanting. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G22/22
CPCA01G22/22
Inventor 王亚梁朱德峰向镜陈诺霞谌江华
Owner CHINA NAT RICE RES INST
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