期刊论文

Effect of seeding rate and paclobutrazol application period on yield of early rice in South Hunan

中文

湖南农业大学学报(自然科学版)

1007-1032

2019

45

5

449-455

10.13331/j.cnki.jhau.2019.05.001

2017YFD0301500:国家重点研发计划 2018YFD0301005:国家重点研发计划

本校为第一机构

以早稻品种中嘉早17为材料,于2017—2018年在湖南衡阳县开展大田试验,研究了多效唑3种喷施时期A1(1叶1心期喷施)、A2(2叶1心期喷施)、A3(1叶1心期与2叶1心期喷施)和4种播种量处理B1(75 g/盘)、 B2(90 g/盘)、B3(105 g/盘)、B4(120 g/盘)对早稻产量的影响。结果表明:水稻成苗率、每穴总根数、平均根长、茎基宽和百株干质量随播种量增加而降低;播种量和多效唑喷施时期对秧苗抗氧化酶活性的影响显著,以B3各处理的酶活性较高;较低播种量处理(B1与B2)分蘖速度较快,最终有效穗数随播种量增大而增多;播种量对地上部分干物质积累和叶面积指数影响显著,两者皆以B3处理最高;播种量与多效唑喷施时期对产量及...

To understand the factors of increasing yield in the machine transplanting seedling nursing techniques of early rice in South Hunan province, we conducted field experiments in Hengyang county, Hunan province in 2017-2018. Three spraying periods of paclobutrazol, spraying on 1 leaf 1 heart period (A1), spraying on 2 leaf 1 heart period (A2), spraying on 1 leaf 1 heart period and 2 leaf 1 heart period (A3), and four seeding rates (dry seed), 75 g/plate (B1), 90 g/plate (B2), 105 g/plate (B3) and 120 g/plate (B4) were used in the experiment to explore the effect on yield of a early rice, Zhongjia...