水稻根系与产量构成关系的研究

本文研究了早造水稻,采用不同施肥处理,3次重复的小区试验,探讨了水稻根系与产量构成的关系. 试验结果表明:不同施肥处理,产量差异极为显著,而重复之间没有明显差异,小区产量经多重测验,施氮、磷、钾肥区产量最高,不施肥区产量最低. 研究表明:小区产量高低与施肥有关外,还直接受到水稻根系发达程度所制约,从回归分析可看出对产量影响最大的是短根数、长根重,最小是伤流量. 研究还表明:在高温多雨的水田生态系统中,通过人控施肥调节、促进水稻根系发育,是夺取水稻高产措施之一.

RESEARCH ON THE RELATIONSHIP BETWEEN ROOT SYSTEM AND RICE YIELD

In order to find out the relationship between root system of rice and its yield, a field plot research of different levels of fertilizer applications was conducted.Result showd that there was significant different existed between treatments, but there was no significant different existed between replications. Multiple rank test showed that the yield of plot with N, P, K was the highest and the yield of plot without fertilizer was the lowest.Research showed that plot yield was directly affected by the development of rice root system, besides fertilizer, the number of short root, long rooth had the greatest influence on yield and the amount of bleeding had the least influence through regression analysis.Reseacrch also showed that one of the key measure to get hight yield of rice is to promote root system development though fertilizer application control.