期刊论文

Effects of Increasing Density and Reducing Fertilizer on Fertilizer Partial Factor Productivity of Hybrid Rice under Ordered Tachine-throwing Technology

中文

天津农业科学

1006-6500

2023

29

08

10-16

10.3969/j.issn.1006-6500.2023.08.003

国家重点研发计划(2017YFD0301506)。

本校为第一机构

为研究有序机抛增密减肥效果，采用湖南省大面积种植的杂交稻品种‘晶两优华占’设置3个密度水平，即低密M0(18万穴·hm-2)、中密M1(22万穴·hm-2)、高密M2(27万穴·hm-2)。3个施肥量水平，低肥F0(450 kg·hm-2)、中肥F1(525 kg·hm-2)、高肥F2(675 kg·hm-2)测定了干物质质量、分蘖数、产量，以及产量构成因素、肥料偏生产力。结果表明：产量最高的是M2F2，比M0F2高7.56%,M2F1处理主要生育期地上部干物质质量最优，比M0F0高59.19%;M1F0的各肥料偏生产力最高，密度增加，有效穗增加，每穗总粒数和产量先减后增，施肥量减少产量下降，增密减肥对于千粒质量和结实率影响不大；密度增加各时期干物质...

In order to study the effect of orderly machine throwing on increasing density and weight loss,three density levels,namely low-density M0(180000 holes·hm-2),medium-density M1(220000 holes·hm-2)and high-density M2(270000 holes·hm...MORE In order to study the effect of orderly machine throwing on increasing density and weight loss,three density levels,namely low-density M0(180000 holes·hm-2),medium-density M1(220000 holes·hm-2)and high-density M2(270000 holes·hm-2),were set using the hybrid rice variety'Jingliangyouhuazhan',which is planted...