Method for improving plumpness of direct-sowing rice grains through exogenous hormones and growth regulator
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A technology for growth regulators and grain enrichment, applied to plant growth regulators, plant growth regulators, botany equipment and methods, etc.
Inactive Publication Date: 2014-05-07
JIANGSU LIXIAHE REGION AGRI RES INST
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However, there are few studies on the mechanism of direct-directed rice grain filling, and the res
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Embodiment 1
[0017] In 2010, in Xiaqiao Village, Wantou Town, Yangzhou City, Jiangsu Province, 5 acres of "Huaidao 13" and "Yangjing 4038" were set up. Under the condition of live broadcast on June 15, the fertilizer and water management was carried out normally. On the 9th, 16th, and 23d after flowering, the treated rice ears were sprayed with concentrations of 15×10-6M ABA, 25×10-6MABA, 5×10-4M Spm, and 10×10-4M Spm, respectively, and sprayed with clear water as a control .
[0018] The treatment with spraying concentration of 25×10-6M ABA showed that after the application of exogenous ABA at the early stage of grain filling (9d after flowering), the ABA content in the grain and the ratio of ABA to GA increased significantly compared with the control (sprayed water treatment) ( Table 1), indicating that exogenous ABA has a regulating effect on the content of endogenous ABA and its ratio with GA.
[0019] Table 1 Effects of exogenous ABA on the ABA content (ng·grain1) and ratio to GA in ...
Embodiment 2
[0029] In 2011, in Xiaqiao Village, Wantou Town, Yangzhou City, Jiangsu Province, 5 acres of "Huaidao 13" and "Yangjing 4038" were set up. Under the condition of direct seeding on June 15, the age of the rice was determined according to the growth and development process of the direct seeding rice. process. The total amount of N application is 20kg / mu, superphosphate 20kg / mu. Spray 200 g and 500 g of potassium dihydrogen phosphate per acre at the first, second, and third leaf stages of rice, and spray water as a control.
[0030] The implementation results show that the treatment of spraying 500g of potassium dihydrogen phosphate per mu at the third leaf stage has the best effect. The average seed setting rate, filling degree and thousand-grain weight of Huaidao 13 and Yangjing 4038 increased by 5.4 percentage points, 4.2 percentage points and 1.32 grams respectively compared with the control, and the yield increased by 11.02%. The actual yield of Huaidao 13 and Yangjing 403...
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Abstract
The invention discloses a method for improving the plumpness of direct-sowing rice grains through exogenous hormones and a growth regulator. The exogenous hormones ABA and Spm and monopotassium phosphate of the plant growth regulator are applied to the direct-sowing rice directly to improve the plumpness of the direct-sowing rice grains. The ABA or the Spm is sprayed in the early period of grouting of the direct-sowing rice, namely 9 days after flowering, and accordingly the corresponding endogenous hormone level can be significantly improved, the plumpness of the grains can be promoted, and the maturing rate, the plumpness of the grains and the thousand seed weight can be significantly improved, wherein the concentration of the ABA is 25 x 10-6 M and the concentration of the Spm is 5 x 10-4 M. The 500 g per mu of monopotassium phosphate is sprayed in the poured 3 leaf stage of the direct-sowing rice and accordingly the maturing rate, the plumpness and the thousand seed weight can be significantly improved and the yield can be improved by more than 10%. Accordingly, the plumpness of the rice grains can be significantly improved due to the fact that the suitable exogenous hormones and growth regulator are utilized in the suitable using period, the risk of the grouting of the direct-sowing rice grains can be avoided, the yield of the direct-sowing rice can be improved, the rice quality can be improved, and the production development of the direct-sowing rice can be promoted.
Description
technical field [0001] The invention relates to a method for improving grain filling of direct-directed rice, in particular to a method for improving grain filling of direct-directed rice through chemical control measures. Background technique [0002] With the advancement of industrialization, the transfer of a large number of rural labor forces, the improvement of agricultural mechanization, the development of agricultural inputs, and the successful selection of early-maturing and high-yielding varieties, direct-seeding rice cultivation has shown an irreversible development trend. Direct-directed rice has the advantages of labor saving, labor saving, and high economic benefits, and has been more and more popularized and applied around the world. [0003] In the 1950s and 1960s, rice was planted directly in northern my country. In the 1970s, the area reached 1.5 million mu. After the 1990s, direct seeding of rice has risen again as a simplified cultivation method. In 2000,...
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