不同播种方式对直播水稻产量形成的影响

Effects of Different Seeding Methods on Yield Formation of Direct Seeding Rice

为了探明不同播种方式对直播水稻产量形成的影响,以水稻精量穴直播机进行开沟起垄,开展人工穴播和人工条播两种播种方式的大田研究。试验以杂交稻品种培杂泰丰和常规稻品种玉香油占为研究材料,比较分析了2种播种方式下水稻干物质积累动态、产量及其构成因素。基于开沟起垄直播开展穴播和条播的研究结果表明,以穴播方式的水稻产量较高,穴播处理能够显著提高培杂泰丰和玉香油占的产量,分别达到23.77%和10.89%,其原因是穴播处理能够提高供试水稻品种的有效穗数,穴播方式还有利于优化水稻群体配置,增加水稻群体干物质积累。因此,开沟起垄方式下穴播较条播有利于水稻稳产和增产。

To find out the influence of different seeding methods on rice yield formation of direct seeding rice,a field experiment of seeding method was carried out by using the rice precision hill-drop drilling machine to open seed furrow and water ditch.The hybrid rice variety Peizataifen and inbred rice variety Yuxiangyouzhan were used as materials,the effects of two kinds of seeding methods on rice dry matter accumulatioin dynamic and yield formation was studied. The results showed that under the condition of using the rice precision hill-drop drilling machine to open the seed furrow and water ditch,in the two seeding methods,the yield of manual drilling was higher than that of manual spotting,the yields of Peizataifeng and Yuxiangyouzhan were significantly increased by 23.77% and 10.89%,this increase was mainly from the increasing tiller number.Additionally,manual drilling was able to optimize rice population and increase the dry matter accumulation. In conclusion,under the condition of using the precision hill-drop drilling mechine to open seed furrow and water ditch,the manual drilling seeding method performed better than manual spotting in yield formation.