优质早稻不同类型肥料全层施用效应的研究

选用生物有机肥、BB肥、尿素、氯化钾、钙镁磷肥等肥源 ,对优质早稻香两优 6 8采用 3种施肥方式 (一次性全层施肥 ;全层深施基肥 ,中后期补施穗肥 ;传统的分期施肥 )进行施用效应研究 ,结果表明 :一次性全层施肥和全层深施基肥、中后期补施穗肥对早稻均能早生快发 ,干物质积累量大 ,尤其是全层深施基肥 ,中后期补施穗肥中的T5早稻 ,中后期长势稳健 ,营养水平好 ,LAI下降缓慢 ,总吸氮量大 ,肥料利用率和产量高 ,千粒重、成穗率较一次性全层施肥明显提高。方差分析及多重比较表明 :T5、T2 两处理与其他处理产量有显著差异 ,说明用生物有机肥配合无机化肥作基肥一次性全层施用能增产 ,但如果后期补施氮肥作穗肥 ,增产潜力更大。

A Study on the Effects of Several Kinds of Fertilizer Used to the Whole Plough Layer on High Quality Early Rice

A plot trial was conducted by using high quality early rice-Xiangliangyou 68 during the whole growth period. So as to study the effect of application. Bio-organic fertilizer, BB fertilizer, Urea KCl and Ca-Mg-P were used with three fertilization methods (1.Total basal pressing to the whole plough layer; 2.Using basal fertilizer in the whole plough layer and adding panicle fertilizer at the late stage; 3.Traditional split fertilization method).The results show: Rice grew rapidly and much dry matter accumulated by using the first and second fertilization methods, especially the rice of T 5 grew stably and strongly and had normal nutrition. LAI decreased slowly at the late stage. Meanwhile, It also had large nutrition uptake, high utilization ratio of fertilizer and high yield. In addition,1000-grains weight and rate of effective panicle were improved. There was much difference between T 2, T 5 and other treats. The results of statistics indicate that the use of mixed bio-organic fertilizer and chemical fertilizer as the total basal pressing to the whole plough layer can increase yield. Adding some Nitrogen fertilizer at the late stage has better effects .