赵荣德. 2011: 施氮量和栽培密度对超高产早稻Y两优302产量及其构成因素的影响. 南方农业学报, 42(5): 518-520. DOI: 10.3969/j.issn.2095-1191.2011.05.015
引用本文: 赵荣德. 2011: 施氮量和栽培密度对超高产早稻Y两优302产量及其构成因素的影响. 南方农业学报, 42(5): 518-520. DOI: 10.3969/j.issn.2095-1191.2011.05.015
shu
ZHAO Rong-de. 2011: Effects of transplanting density and nitrogen fertilizer rate on yield and its components in super-high-yielding early rice variety Y-liangyou 302. Journal of Southern Agriculture, 42(5): 518-520. DOI: 10.3969/j.issn.2095-1191.2011.05.015
Citation: ZHAO Rong-de. 2011: Effects of transplanting density and nitrogen fertilizer rate on yield and its components in super-high-yielding early rice variety Y-liangyou 302. Journal of Southern Agriculture, 42(5): 518-520. DOI: 10.3969/j.issn.2095-1191.2011.05.015
shu

施氮量和栽培密度对超高产早稻Y两优302产量及其构成因素的影响

Effects of transplanting density and nitrogen fertilizer rate on yield and its components in super-high-yielding early rice variety Y-liangyou 302

    摘要
  • 摘要: 目的筛选适宜的施氮量和栽培密度,为广西桂北生态条件下超级稻高产栽培提供理论依据.方法以超高产早稻Y两优302为材料,探讨2个施氮水平150 kg/ha(N1)、225 kg/ha(N2)和4个栽培密度24.4万蔸/ha(D1)、30.6万蔸/ha(D2)、36.8万蔸/ha(D3)、42.6万蔸/ha(D4)在生育期内对水稻产量的影响.结果Y两优302产量主要受有效穗数和每穗粒数的影响,穗长和千粒重对产量影响不明显.在施氮量为225 kg/ha,栽培密度为24.4万~30.6万蔸/ha时,有利于Y两优302增产.结论较高的施氮量和较低的栽培密度有利于Y两优302产量的进一步提高.

     

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