不同栽插密度对有色稻产量和群体质量的影响

Effects of Different Density on Yield and Population Growth Quality in Colored Rice

有色稻米具有良好的食味、药用价值,目前人们对有色稻米需求不断增加,但产量低是影响其在生产上大面积推广的一个主要因素。以黑糯和红粳两个有色稻为材料,设5种不同的栽插密度,研究了不同栽插密度对有色稻群体质量和产量的影响。结果表明:栽插密度主要影响有效穗数进而影响产量。60万苗/hm2密度处理产量显著低于其他处理,密度在180～240万苗/hm2时,产量和成穗率较高,干物质积累多,说明适当提高栽插密度有利于提高有色稻产量和构建高产群体。此试验中黑糯和红粳的适宜密度分别为180万苗/hm2和240万苗/hm2,红粳耐密性较黑糯强。

At present, there is increasing demand for colored rice because it has good rice taste and medicinal value, but low yield is the main influence factors of the large-scale popularization. Yield and population growth quality of colored rice were studied under five different densities with two colored rice of black glutinous and red japonica. The results indicated that the density influenced yield mainly by changing the number of effective panicles. The 60× 10^4 plant/hm^2 treatments had a significant lower yield than the other treatments. The treatment with a density from 180× 10^4 - 240× 10^4 plant/hm^2 had a higher yield and effective tiller rate. It is concluded that properly increasing the density was beneficial to improve the yield and to construct the population growth quality of colored rice. The suitable density of black glutinous and red japonica is respectively 180× 10^4 plant/hm^2 and 240× 10^4 plant/hm^2, moreover, the durability to density of red japonica is stronger than black glutinous.