插秧密度对寒地粳稻花后可溶性糖形成积累的影响  

Effects of Transplanting Density on Contribution and Accumulation of Soluble Sugar on Japonica Rice in Cold Region

作　　者：刘洋[1,2] 赵宏伟[1] 谷海东[1] 姚辰[1] 

机构地区：[1]东北农业大学农学院,黑龙江哈尔滨150030 [2]黑龙江省农业科学院大庆分院,黑龙江大庆163000

出　　处：《核农学报》2015年第6期1165-1173,共9页Journal of Nuclear Agricultural Sciences

基　　金："十二五"农村领域国家科技计划项目(2013BAD20B04);科技部科技攻关项目(2011BAD35B02-01);科技部科技支撑项目(2011BAD16B11)

摘　　要：为了研究寒地粳稻的最适插秧密度,本试验以寒地粳稻品种东农425和东农427为试验材料,设置12个插秧密度处理:D1(35 cm×16.7 cm)、D2(30 cm×16.7 cm)、D3(35 cm×13.3 cm)、D4(25cm×16.7 cm)、D5(30 cm×13.3 cm)、D6(35 cm×10 cm)、D7(25 cm×13.3 cm)、D8(30 cm×10cm)、D9(25 cm×10 cm)、D10(35 cm×6.7 cm)、D11(30 cm×6.7 cm)、D12(25 cm×6.7 cm),研究了插秧密度对寒地粳稻地上各部分可溶性糖形成积累的影响。结果表明:随花后天数的增加,东农425和东农427叶片可溶性糖含量呈单峰曲线变化,茎秆和籽粒可溶性糖含量呈先下降又有少量回升趋势。随着插秧密度升高,东农425和东农427叶片、茎秆、籽粒可溶性糖含量升高,而密度过高反而下降;东农425叶片、茎秆可溶性糖含量在D6处理下达最大值,籽粒可溶性糖含量在D5处理下达最大值,东农427均在D3处理下达最大值;东农425茎秆可溶性糖的输出量、输出率和对籽粒的贡献率分别在D4、D6、D9处理下达最大值,而东农427分别在D2、D3、D3处理下达最大值;抽穗期和成熟期叶片、茎秆、籽粒单位土地面积可溶性糖积累量与产量呈极显著正相关。本试验探讨了寒地粳稻叶片、茎杆、籽粒可溶性糖含量与产量的关系,为寒地粳稻的高产栽培提供依据。In order to study the most suitable transplanting density for Japonica rice in cold region,‘Dongnong425＇and‘Dongnong427＇were was used as experimental material,setting 12 transplanting density,D1（ 35 cm × 16. 7 cm）,D2（ 30 cm × 16. 7 cm）,D3（ 35 cm × 13. 3 cm）,D4（ 25 cm × 16. 7 cm）,D5（ 30 cm × 13. 3 cm）,D6（ 35 cm × 10 cm）,D7（ 25 cm × 13. 3 cm）,D8（ 30 cm × 10 cm）,D9（ 25 cm × 10 cm）,D10（ 35 cm × 6. 7 cm）,D11（ 30 cm × 6. 7 cm）,D12（ 25 cm × 6. 7 cm）. From the flowering stage to maturity stage,to study the effects of transplanting density on contribution and accumulation of soluble sugar on japonica rice in cold. The results showed that increased with the number of flowers acquired,soluble sugar content of leaves of ‘Dong Nong 425＇and ‘Dong Nong 427＇showed a single peak curve,soluble sugar content of stems and grains of ‘Dong Nong 425 ＇and ‘Dong Nong 427 ＇showed a generally downward trend,but showed a small amount of rebound after reduced to the lowest value. The soluble sugar content of leaves,stems and grains of the two varieties were increased with the density increasing,however,when the density was too large,they actually reduced. when ‘Dong Nong 425 ＇under the D6 treatments,the soluble sugar content of leaves and stems were all high,under the D5 treatments,the soluble sugar content of grains were high,but ‘Dong Nong 427＇were all high when they under the D3 treatments. The translocated sugars,translocated ratio,contributed ratio of stems were high when ‘Dong Nong 425 ＇under the D4,D6,D9 treatments,while ‘Dong Nong 427 ＇under the D2,D3,D3 treatments. It was negative significantly positive correlated between yield and heading and maturity stages amount of soluble sugar accumulation of leaves,stems,grains. The test depth study of the relationship with soluble sugar content of leaves,stem,seed and yield of japonica rice in cold region and,laying the foundation for high-yield rice cultivation.

关 键 词：寒地粳稻 插秧密度 可溶性糖 

分 类 号：S511.22[农业科学—作物学]