当前位置:大学毕业论文> 本科论文>材料浏览

关于分蘖论文范文写作 播期和密度对强分蘖谷子书香1号农艺性状和产量的影响相关论文写作资料

主题:分蘖论文写作 时间:2024-03-03

播期和密度对强分蘖谷子书香1号农艺性状和产量的影响,本论文可用于分蘖论文范文参考下载,分蘖相关论文写作参考研究。

分蘖论文参考文献:

分蘖论文参考文献 论文期刊号期刊号期刊名期刊的卷号和期号

摘 要:

以弱分蘖品种济谷19为对照,研究留苗密度和播期对强分蘖谷子书香1号分蘖和产量等相关性状的影响.结果表明:4月30日春播,书香1号留苗密度(本试验均指666.7m2密度,下同)1.5万、2.5万、3.5万、4.5万株时,单株分蘖成穗分别是2.30、1.90、1.37、1.35个;随留苗密度增加,单株分蘖数减少,群体成穗和产量增加,留苗密度2.5万、3.5万、4.5万株时产量显著高于1.5万株,留苗密度4.5万株产量最高.6月26日夏播,书香1号分蘖成穗能力显著降低,留苗密度1.5万、2.5万株时单株分蘖成穗0.80、0.46个,密度3.5万、4.5万株时基本没有分蘖成穗.书香1号分蘖茎的株高、穗长、穗粗、穗粒重等性状都明显低于主茎相应性状.4种密度下强分蘖品种书香1号产量都低于济谷19,留苗密度4.5万株时济谷19春播单产(666.7m2产量,下同)315.7 kg、夏播单产471.2 kg,比书香1号产量高7.05%、25.3%.总之,强分蘖谷子品种分蘖成穗能力和密度、播期密切相关,留苗密度增加,单株分蘖成穗数降低,播期早分蘖成穗数多,播期推迟分蘖成穗数减少;不同留苗密度间产量差异显著,分蘖性谷子群体有一定的自身调节能力;主茎成穗对强分蘖谷子产量的形成起主要作用.强分蘖性品种书香1号产量水平显著低于弱分蘖品种济谷19,生产上应当重视弱或不分蘖谷子.

关键词:谷子;播期;密度;分蘖

中图分类号:S515.042文献标识号:A文章编号:1001-4942(2016)08-0034-04

AbstractWith the foxtail millet cultivar Jigu 19 with low tillering capacity as contrast, we studied the effects of plant density and sowing date on tillering and yield correlated characters of Shuxiang 1 with high-tillering capacity. The results showed that the effective tillers per plant of spring-sowed (April 30) Shuxiang 1 were 2.30, 1.90, 1.37 and 1.35 respectively when the plant density were 15 thousand, 25 thousand, 35 thousand and 45 thousand plants per 666.7m2 respectively. With the increase of plant density, the effective tillers per plant decreased, but the population spikes and yield increased. The yield was the highest at 45 thousand plants per 666.7m2, and the lowest at 15 thousand plants per 666.7m2 which was significantly lower than the other density treatments. The tillering capacity of summer-sowed Shuxiang 1 was greatly reduced compared with spring-sowed one, and the effective tillers per plant were 0.80 and 0.46 at the density of 15 thousand and 25 thousand plants per 666.7m2 respectively, while there were no effective tillers at the density of 35 thousand and 45 thousand plants per 666.7m2. The plant height, spike length, spike diameter and grain weight per spike of tiller stem were significantly lower than those of the main stem in Shuxiang 1. The yield of Shuxiang 1 was lower than that of Jigu 19 under the four plant densities. At the density of 45 thousand plants per 666.7m2, the yields of Jigu 19 were 315.7 and 471.2 kg per 666.7m2 respectively under spring sowing and summer sowing respectively, which increased by 7.05% (P>0.05) and 25.3% (P<0.05) respectively compared to Shuxiang 1. In conclusion, the ear bearing capacity of tillers was closely correlated with plant density and sowing date in high-tillering foxtail millet varieties; the effective tillers per plant decreased with the increase of plant density and the postponement of sowing date. The yield was significantly different between different plant densities; the population of high-tillering varieties had certain self adjusting ability, and the ear bearing of main stem played a key role in the formation of yield. The yield of Shuxiang 1 with high-tillering capacity was significantly lower than that of Jigu 19 with lower-tillering capacity, so we should pay more attention to varieties with fewer or no tillers in production of foxtail millet.

结论:适合不知如何写分蘖方面的相关专业大学硕士和本科毕业论文以及关于分蘖论文开题报告范文和相关职称论文写作参考文献资料下载。

群体密度对玉米茎秆抗倒力学和农艺性状影响
摘 要:本文从试验角度分析了群体密度对玉米茎秆抗倒力学和农艺性状的影响,首先介绍了试验的背景,继而分别从试验材料与方法的角度对整个试验过程进行了。

秋延晚辣椒播期试验总结
为了探索修文地区低热河谷地带秋延晚辣椒不同播种期的适应性、抗逆性、丰产性、商品性等特性,为秋延晚辣椒的种植提供科学依据,修文县蔬菜生产管理站20。

播期对玉米群体产量和产量性能影响
栽培措施是提高玉米产量的非遗传因素。前人对播期与作物干物质积累特性作了大量的相关研究,马国胜等(2007)研究表明,在关中灌区夏播条件下,在6月。

晚茬小麦品种和播期试验报告
摘 要:本文主要研究东海县水稻晚茬条件下不同小麦品种(扬麦23、扬麦25、徐麦33、农丰148 )播期与综合生产力的关系,为小麦迟播生产中品种与。

论文大全