摘要
以扬稻6号(籼稻)和扬辐粳8号(粳稻)为材料,设置4个处理:(T1)不施氮肥;(T2)施用无机氮;(T3)施用饼肥;(T4)饼肥与无机氮肥配施。研究饼肥与无机氮肥配施对水稻根系形态生理和产量形成的影响。结果表明:各处理的产量表现为饼肥与无机氮肥配施(T4)>施用无机氮(T2)>施用饼肥(T3)>不施氮肥(T1),4个处理间差异显著。饼肥与无机氮肥配施(T4)显著增加了穗数、结实率、千粒重和收获指数。饼肥与无机氮肥配施(T4)显著提高了抽穗期有效叶面积和高效叶面积、灌浆期叶片叶绿素含量和光合速率以及各主要生育时期的根干重、根长、根系氧化力、根系伤流量、根系总吸收表面积和活跃吸收表面积。表明饼肥与无机氮肥配施可以促进根部生长,进而促进地上部生长并提高产量。
Using two local high-yielding cultivars, Yangdao 6 （indica） and Yangfujing 8 （japonica）, as materials, four treatments ,no N（ T1 ）, inorganic N fertilizer （T2）, rapeseed cake fertilizer （T3）, and rapeseed cake fertilizer combined with inorganic nitrogen fertilizer （T4）, were conducted to investigate the effect of applying rapeseed cake fertilizer combined with inorganic nitrogen fertilizer on morphology and physiology of roots and yield of rice. Results showed that the order of grain yield was T4 〉 T2 〉 33 〉 T1, the differences among four treatments were signifi- cant. The T4 treatment significantly increased panicles,percentage of filled grains, 1000 -grain weight, and harvest index. It also significantly increased effective leaf area index and high effective leaf area index at the heading time, SPAD （soil-plant analysis department） values and photosynthetic rate during the grain filling period. Root dry weight, root length, root oxidation activity, amount of root bleeding, the total absorbing surface area, and active ab- sorbing surface area at different growth stages were greater under the T4 treatment than those of other treatments. The results suggested that application of rapeseed cake fertilizer combined with inorganic nitrogen fertilizer could improve root growth, and consequently enhance shoot growth and increase grain yield.
出处
《作物杂志》
CAS
CSCD
北大核心
2013年第4期87-94,共8页
Crops
基金
国家自然科学基金重大国际合作交流项目(31061140457)
国家自然科学基金项目(31271641
31071360
31171481
31201155)
公益性行业(农业)科研专项(201103003
201203079)
国家"十二五"科技支撑计划项目(2011BAD16B14)
教育部博士点基金(20123250120001)
江苏高校研究生创新工程和优势学科建设工程专项经费
关键词
水稻
饼肥
无机氮肥
根系
产量
Rice
Rapeseed cake fertilizer
Inorganic nitrogen fertilizer
Root
Yield
