学术
施肥对水稻生长动态和穗粒结构的影响分析
吉振华[1] 顾莉娟[1] 侍山林[1] 吴建中[2] 商兆堂[3]
[1]江苏省盐城市盐都区秦南镇农技推广中心,江苏盐城224021 [2]江苏省盐城市盐都区农技推广中心,江苏盐城224002 [3]江苏省气象局,江苏南京210009
摘 要:
为水稻科学施肥提供理论论据。设计不同施肥组合观测水稻的生长动态和穗粒结构。不同施肥处理对总茎蘖数的影响非常明显。在其他条件相同的情况下,高峰苗数随氮肥的增加而快速增加,随磷肥的增加呈直线下降,钾肥与高峰苗数为非线性关系,叶面积系数与施氮量几乎呈直线关系,氮、磷、钾科学搭配可以取得理想的生长状态。氮肥对提高有效穗数是最重要的。在氮、钾肥一定的前提下,产量随着P2O5的增加而快速增加;在氮磷肥施用量完全相同的情况下,产量随着K2O的增加而增加。N=232.50 kg/hm^2、P2O5=75.00 kg/hm^2、K2O=150.00 kg/hm^2是科学合理的组合。[著者文摘]
文章出处:
《安徽农业科学》-2007年35卷27期,8627 -8581-8585,8627页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
0517-6611（2007）27-08581-05
Effects of Fertilization on the Growth Dynamics and Spike-grain Structure in Rice
JI Zhen-hua et al （Agricultural Technique Extension Center of Qinnan Town in Yandu District of Jiangsu Province, Yancheng, Jiangsu 224021 ）
Abstract:
The objective of the research was to provide theoretical basis for scientific fertilization of rice. Different fertilization combinations were designed to observe the growth dynamic and spike-grain structure of rice. The effects of different fertilization treatments on total tiller number were very obvious. Under the circumstance that the other conditions were same, the peak tiller numbers rapidly increased along with N fertilizer increasing and decreased linearly along with P fertilizer increasing. K fertilizer had nonlinear relationship to the peak seedlings number and the leaf area coefficient nearly performed line relationship to N fertilization. Scientific collocation with N, P and K could obtain perfect growth state. Nitrogenous fertilizer was the most important for increasing effective spikes. On the premise of constant N and K fertilizers, the yield increased rapidly along with P2O5 increasing. When the application mount of N and P fertilizers were completely same,the yield increased along with K2O increasing.The combination with 232.50 kg/hm^2 N,75.00 kg/hm^2 P2O5 and 150.00 kg/hm^2 K2O was scientific and reasonable.[著者文摘]
Key words:
Fertilization;Rice;Growth dynamic;Spike-grain structure
基金资助:
江苏省社会发展项目（Bs2006554）.
更多>>免费文章
cqvip.com