以适合黑龙江省第二积温带种植的穗重型品种绥粳4号和穗数型品种垦鉴稻6号为试验材料,进行了不同栽培密度试验,以明确第二积温带水稻适宜移栽密度,分析高产形成的原因。试验结果表明,在寒地第二积温带种植,穗重型品种和穗数型品种均以行距24.0 cm、株距13.3 cm 处理时产量最高。
Different planting density experiment was carried out in the second accumulated temperature zone of Heilongjiang Province, with Suijing 4 and Kenjiandao 6. The results showed that the yield of row spacing 24.0 cm were higher than that of row spacing 30.0 cm, the highest yields in two type panicle of rice varieties were both at row spacing 24.0 cm and plant spacing 13.3 cm.
[1] 宋福金,高存启,魏中华,等. 寒地水稻不同类型品种栽培密度精确定量技术研究[J]. 北方水稻,2011(5):17-20.
[2] 宋宪青. 不同施肥量及栽培密度对水稻产量和效益的影响[J]. 现代农业科技,2011(2):1-5.
[3] 施伏芝,苏泽胜,罗志祥,等. 不同茎蘖苗和栽插密度对协优57产量及其主要经济性状的影响[J]. 安徽农业科学,2001(9):439-446.
[4] 刘宝海,宋福金,高存启,等. 施肥和密度对水稻粗蛋白质及直链淀粉含量的影响[J]. 安徽农学通报,2004(1):4-11.