基于不同灌溉技术对水稻干物质积累及产量影响

Effects of Different Irrigation Techniques on Dry Matter Accumulation and Yield of Rice

文章基于不同灌溉技术方案进行田间布置,进行水稻产量及干物质等指标的测定,得出湿润灌溉有利于增加每穗实粒数,提高结实率和千粒重,从而获得高产,原因在于湿润灌溉既能满足稻苗的生理需水,又能满足根系的好气习性,有利于干物质向穗部运输,促进籽粒灌浆结实,从而使构成产量的各项指标明显提高;浅湿灌溉在孕穗期有利于"源"的积累和"库"的形成,生育中后期有利于同化物的输出,促进籽粒结实,使产量构成因素相对提高。

In this paper,the indexes about rice yield and dry matter were measured and the field layout was conducted based on different irrigation techniques,showing that:moisture irrigation is beneficial to increase grain number per panicle,seed setting rate and 1000-grain weight,thus obtaining high yield.The reason is that moist irrigation can not only satisfy the physiological water requirement of rice seedlings,but also satisfy the aerogenic habit of roots,it is beneficial to the transport of dry matter to ear,promote grain filling and seed setting,and make the various indexes of yield increase obviously.Shallow wet irrigation was beneficial to the accumulation of sources and reservoir formation at booting stage,and to the output of assimilates in the middle and late growth stage,so as to promote grain setting and improve the relative yield components.