播种期和留桩高度对再生稻产量及产量构成因素的影响
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摘要
为探明洞庭湖平原区不同播种期和留桩高度条件下再生稻产量及产量构成因素的变化特征,明确该区域适宜的播种期和留桩高度,以黄华占为材料,开展了不同播种期和留桩高度对再生稻产量及产量构成因素影响的研究。结果表明:以4月15日播种的再生稻产量最高,达3 486.8 kg/hm~2;留桩高度为30 cm的再生稻产量最高,为3 474.5 kg/hm~2;4月15日播种、且留桩高度为30 cm的两季水稻产量最高,为13 933.5kg/hm~2。由此可见,在洞庭湖平原区采用直播方式作再生稻,以4月15日左右播种、留桩高度30~40 cm,能获得较高的两季水稻产量。
In order to find out the changing characteristics of grain yield and yield components of ratooning rice under different sowing dates and stubble height in Dongting Lake plain area, and to determine the suitable sowing time and the stubble height, using Huanghuazhan as material to study the effects of different sowing dates and stubble height on the yield and yield components of retooning rice. The results showed that the highest grain yield of retooningrice was reaching 3486.8 kg/hm~2 when the sowing date was in April 15th; and the highest grain yield of retooning rice was 3474.5 kg/hm~2 when the stubble height was 30 cm. The highest double cropping grain yield of retooning rice was 13933.5 kg/hm~2 when the sowing date was in April 15 th and the stubble heightwas 30 cm.It can be seen that in the plain area of Dongting Lake, the direct seeding method was used for the retooning rice and it can be obtained two seasons high yield rice by stubble height was 30~40 cm and sowing around April 15 th.
In order to find out the changing characteristics of grain yield and yield components of ratooning rice under different sowing dates and stubble height in Dongting Lake plain area, and to determine the suitable sowing time and the stubble height, using Huanghuazhan as material to study the effects of different sowing dates and stubble height on the yield and yield components of retooning rice. The results showed that the highest grain yield of retooningrice was reaching 3486.8 kg/hm~2 when the sowing date was in April 15th; and the highest grain yield of retooning rice was 3474.5 kg/hm~2 when the stubble height was 30 cm. The highest double cropping grain yield of retooning rice was 13933.5 kg/hm~2 when the sowing date was in April 15 th and the stubble heightwas 30 cm.It can be seen that in the plain area of Dongting Lake, the direct seeding method was used for the retooning rice and it can be obtained two seasons high yield rice by stubble height was 30~40 cm and sowing around April 15 th.
引文
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[9]张桂莲,屠乃美,袁菊红,等.播种期对再生稻腋芽萌发和产量的影响[J].湖南农业大学学报(自然版),2005,31(3):229-232.
[2]施能浦,焦世纯.中国再生稻栽培[M].北京:中国农业出版社,1999.
[3]柳开楼,秦江涛,张斌.播种期对轻简栽培方式再生稻源库关系的影响[J].土壤,2012,44(4):686-695.
[4]陈健.水稻栽培方式的演变与发展研究[J].沈阳农业大学学报,2003,34(5):389-393.
[5]卞同洋,陈益楼,蔡立万.江苏沿海农区直播水稻的高产栽培技术[J].江西农业学报,2007,19(10):34-37.
[6]Farooq M,Siddique K,Rehman H,et al.Rice direct seeding:experiences,challenges and opportunities[J].Soil and Tillage Research,2011,111:87-98.
[7]何水清,周明火,王玉猛,等.不同播种期对再生稻丰源优272产量及产量构成的影响[J].中国稻米,2013,19(5):104-105.
[8]刘爱中,邹冬生,屠乃美,等.留桩高度对再生稻生长发育及产量的影响[J].安徽农业科学,2007,35(17):5120-5121,5172.
[9]张桂莲,屠乃美,袁菊红,等.播种期对再生稻腋芽萌发和产量的影响[J].湖南农业大学学报(自然版),2005,31(3):229-232.