Effects of degradable mulchseeds direct seeding on growth and yield of rice
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    Abstract:

    Field experiments of degradable mulchseeds rice direct seeding compared with conventional direct seeding and transplanting were carried out in Liaoyang City and Xinbin County to explore the application feasibility of the technology in Liaoning Province.The effects of degradable mulching on temperatures at different soil layers,the emergence time,the emergence rate,the growth characteristics and the yield components of rice were studied.The results showed that degradable mulching significantly increased soil temperature at the surface layer (P<0.01)and temperature at 5 cm below surface of the soil (P<0.05).At the early stage of direct seeding and transplanting,mulching increased the soil temperature,especially temperature of the shallow layer.From the middle stage to late stage of paddy growing,the temperature of deeper soil layer increased fast.Compared with conventional rice direct seeding,the emergence date of mulchseeds planting was 6 days earlier and the emergence rate was 17.6% higher.Compared with conventional direct seeding and transplanting,the mulchseeds planting significantly affected rice plant height and tillering.At the early stage of rice growth,the rice plant of mulchseeds direct seeding grew faster,started tillering earlier,and the growth of the secondary branch was promoted.The yield of degradable mulchseeds rice direct seeding at moisture content of 14.5% was 11 141 kg/hm2,with 17.72% and 8.33% more than that of conventional direct seeding and transplanting,respectively.

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宋玉秋,张强,陈天佑,辛明金,刘翠红,邬立岩,张本华,孔爱菊,崔红光,任文涛. Effects of degradable mulchseeds direct seeding on growth and yield of rice[J]. Jorunal of Huazhong Agricultural University,2017,36(4):1-6.

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History
  • Received:November 09,2016
  • Revised:
  • Adopted:
  • Online: June 12,2017
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