施氮量对江汉平原直播粳稻生长和产量的影响
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摘要
为了解杂交粳稻在江汉平原的直播生长特性,以3个杂交粳稻为材料,设置3个施氮水平探讨了直播粳稻的生长和产量差异。结果表明:随着施氮量的增加,直播粳稻的生育期不同程度延长;分蘖动态受施氮水平的影响,表现为高峰苗出现时间因施氮量出现不同程度的推后;随着施氮量的增加,直播粳稻的产量总体上呈现增产的趋势,产量差异达极显著水平(P<0.01);不同施氮量下,甬优4949的产量最高,与甬优1540和甬优4149相比,产量差异达极显著水平(P<0.01),甬优1540和甬优4149产量差异不显著。
To study the growth characteristics of direct seeding japonica rice in Jianghan Plain,three hybrid japonica rice varieties were used as experimental materials,and three nitrogen application levels were set to study the growth and yield differences of direct seed japonica rice.The results showed that with the increase of nitrogen application rate,the growth period of direct seeding japonica rice was prolonged to different extents,the tillering dynamics were affected by the nitrogen application level,which showed that the peak seedling emergence time was delayed by different nitrogen application rates;With the increase of nitrogen application rate,the yield of direct seed japonica rice showed a trend of increasing,and the yield difference reached a very significant level(P<0.01).Under different nitrogen application rates,the yield of Yongyou 4949 was the highest,compared with Yongyou 1540 and Yongyou 4149,the yield difference reaches a very significant level(P<0.01),and the difference in yield between Yongyou 1540 and Yongyou 4149 was not significant.
To study the growth characteristics of direct seeding japonica rice in Jianghan Plain,three hybrid japonica rice varieties were used as experimental materials,and three nitrogen application levels were set to study the growth and yield differences of direct seed japonica rice.The results showed that with the increase of nitrogen application rate,the growth period of direct seeding japonica rice was prolonged to different extents,the tillering dynamics were affected by the nitrogen application level,which showed that the peak seedling emergence time was delayed by different nitrogen application rates;With the increase of nitrogen application rate,the yield of direct seed japonica rice showed a trend of increasing,and the yield difference reached a very significant level(P<0.01).Under different nitrogen application rates,the yield of Yongyou 4949 was the highest,compared with Yongyou 1540 and Yongyou 4149,the yield difference reaches a very significant level(P<0.01),and the difference in yield between Yongyou 1540 and Yongyou 4149 was not significant.
引文
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[2]郑洪帧.不同直播栽培方式对水稻生长发育特性及产量形成的影响[D].成都:四川农业大学,2012.
[3]杨武广,季陆鹰,葛胜,等.不同播期与基本苗对直播稻群体及产量的影响[J].安徽农业科学,2014,42(27):9314~9316.
[4]姚义,霍中洋,张洪程,等.播期对不同类型品种直播稻生长特性的影响[J].生态学杂志,2010,29(11):2131~2138.
[5]梅少华,陈兴国,田剑,等.不同播种量和施氮量对黄华占直播产量及其构成因素的影响[J].中国稻米,2011,17(3):39~42.
[6]李武权,徐金兰,王太高,等.肥料对直播水稻淮稻5号产量与品质的影响[J].安徽农学通报,2012,18(22):52~56.
[7]季红娟,张小祥,戴正元,等.肥料管理对直播粳稻扬粳4038稻米品质影响的研究[J].扬州大学学报(农业与生命科学版),2011,32(4):39~44.
[8]陈志德,王才林,赵凌.日本直播稻的发展及启示[J].中国稻米,2010,16(4):37~39.
[9]卢百关,秦德荣,樊继伟,等.江苏省直播稻生产现状、趋势及存在问题探讨[J].中国稻米,2009,15(2):45~47.
[10]苏祖芳,周培南,许乃霞,等.密肥条件对水稻氮素吸收和产量形成的影响[J].中国水稻科学,2001,15(4):42~47.
[11]张洪程,王秀芹,戴其根,等.施氮量对杂交稻两优培九产量、品质及吸氮特性的影响[J].中国农业科学,2003,36(7):800~806.
[12]周炜,陈虞雯,胡宇容,等.不同品种直播稻适宜播种量[J].江苏农业科学,2016,44(11):93~95.
[13]余大龙.江汉平原直播水稻栽培关键技术试验研究[D].北京:中国农业科学院,2013.