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Published in last 1 year |  In last 2 years |  In last 3 years |  All Please wait a minute... For Selected: Download Citations EndNote Reference Manager ProCite BibTeX RefWorks Toggle Thumbnails Select Changes in the vigor of wheat seeds produced under different nitrogen application rates during seed production ZHANG Min HUBEI AGRICULTURAL SCIENCES    2024, 63 (4): 1-5.   DOI: 10.14088/j.cnki.issn0439-8114.2024.04.001 Abstract （52）      PDF （4288KB）（35）       Knowledge map    Save In order to explore the effect of nitrogen fertilizer on the seed vigor of wheat （Triticum aestivum L.） and find out the best fertilization amount, the wheat variety Jimai 22 was selected as the test material, the seeds under different nitrogen application rates were harvested for standard germination test, and the germination, seeding growth and physiological indexes of the seed were determined. The results showed that the yield and seed vigor index of wheat were the highest when the pure nitrogen application rate was 154 kg/hm2 and 220 kg/hm2, which was suitable for the production of high vigor wheat seeds. Under no nitrogen application, the seed yield and vigor index were the lowest, the seed water content was high, and the germination rate was the fastest, indicating that the seed texture of wheat with no nitrogen application became loose, and it was easier to absorb water during germination, thus accelerating the germination process. Under each nitrogen application level, the seed germination index did not change much. There was a very significant correlation between the absolute content of seed protein and the dry weight of seedlings （P<0.01）. Reference | Related Articles | Metrics Select Changes of growth and phosphorus utilization of highland barley under excessive phosphorus application TAN Jian-xin HUBEI AGRICULTURAL SCIENCES    2024, 63 (4): 6-6.   DOI: 10.14088/j.cnki.issn0439-8114.2024.04.002 Abstract （35）      PDF （1701KB）（21）       Knowledge map    Save To explore the upper limit of phosphorus fertilizer application for the main highland barley varieties and new highland barley strains, and find out the characteristics of growth, development, and nutrient absorption and utilization of new highland barley varieties （lines） under excessive phosphorus application, five treatments were set up, including control without phosphorus application （CK）, conventional phosphorus application treatment （P1）, and excessive phosphorus application treatments （P2, P3, P4）, to study the changes in growth and phosphorus absorption and utilization of highland barley under excessive phosphorus application. The application rates of P2O5 in the five treatments were 0, 56.2, 138.5, 220.8 and 277.0 kg/hm2, respectively. The results showed that the highest tillering number of highland barley increased with the increase of phosphorus fertilizer application amount. Applying phosphorus could increase the number of mature ears of highland barley, but excessive phosphorus application could reduce the number of mature ears of highland barley. Applying phosphorus fertilizer could increase the plant height of highland barley, but when the amount of phosphorus fertilizer increased to a certain extent, the increase in plant height of highland barley was not significant. Applying phosphorus fertilizer could increase the average and maximum filling rates of highland barley, and with the increase of phosphorus application rate, they first increased and then decreased. The phosphorus fertilizer utilization efficiency, phosphorus fertilizer agronomic utilization efficiency, phosphorus fertilizer partial productivity, and yield of the two highland barley varieties （lines） showed a decreasing trend with the increase of phosphorus application amount. The above analysis showed that excessive application of phosphorus fertilizer would lead to a decrease in the number of ears of highland barley and a significant decrease in phosphorus fertilizer utilization efficiency. Reference | Related Articles | Metrics page Page 1 of 221 Total 442 records First page Prev page Next page Last page