HUBEI AGRICULTURAL SCIENCES ›› 2019, Vol. 58 ›› Issue (13): 11-15.doi: 10.14088/j.cnki.issn0439-8114.2019.13.002

• Breeding & Cultivation • Previous Articles     Next Articles

Effect of sowing date on growth,development and yield of saline-alkali tolerant rice in southern Liaoning province

CHEN Long1,2, ZHANG Mei-ling3, CHEN Hong-li2, LI Jun-he2, YU Weng-ying1   

  1. 1.Institute of Atmospheric Environment,China Meteorological Administration,Shenyang 110166,China;
    2.Panjin Meteorological Bureau in Liaoning Province,Panjin 124010,Liaoning,China;
    3.Dawa Meteorological Bureau,Panjin 124000,Liaoning,China
  • Received:2019-02-17 Online:2019-07-10 Published:2019-12-06

Abstract: In order to study the effect of sowing date on rice (Oryza sative L.) in southern Liaoning province, the saline-alkaline tolerant rice variety Yanfeng 47 was used as the experimental material, setting 4 different sowing dates, which was on April 5(S1), April15(CK), April25(S2), and May 5 (S3), to analyze the effects of sowing date on the growth, development and yield of salt-tolerant rice. The results showed that the early sowing led to prolong the entire growth period of rice, delayed sowing date caused a decrease in the total days of rice growth. Both the advance and postponement of the sowing date resulted in higher plant heights in the vegetative growth stage (three-leaf stage to jointing stage) of the rice in the Yanfeng 47 than in the CK, and the plant height in the reproductive growth stage (milk-ripe stage) was lower than that in the CK. Leaf area of Yanfeng 47 under the early and delayed sowing situation was larger than that of CK during the tillering stage to the heading stage, and was lower than CK after the ripening stage. The above-ground dry matter under the early and delayed sowing situation was higher than CK during the tillering stage to the jointing stage, and was lower than that of CK at heading stage. The highest theoretical yield was CK in 4 sowing dates; the highest grain number and grain number of spikes was S2. The number of grains per panicle, number of grains per panicle, 1 000-grain weight, and theoretical yield under the early sowing date was lower than those of CK. The 1000-grain weight and theoretical yield under the delayed sowing date was lower than CK.The suitable sowing date for salt-tolerant rice in southern Liaoning province is April 15 to 25, and it is possible to take appropriate measures to increase the plant height, leaf area, and dry matter weight in the shoot during the critical period that affects the growth and development of rice biomass and yield indicators so as to achieve high yield in the later period.

Key words: rice(Oryza sative L.), saline-alkaline tolerant, sowing date, growth, yield, southern Liaoning province

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