作　　者： ; ; ; ; ; ; ;

机构地区： 华南农业大学农学院

出　　处： 《农业工程学报》 2011年第3期89-92,共4页

摘　　要： 为了探明精量穴直播水稻机械深施肥技术的增产机理,通过大田试验,研究了机械深施缓释肥对精量穴直播超级稻培杂泰丰(超级杂交稻)和玉香油占(超级常规稻)的光合生理和抗衰老生理特性的影响。结果表明:与人工撒施缓释肥基肥(CK)比较,精量穴直播超级稻机械深施缓释肥基肥(T2)在齐穗期和成熟期的光合速率和叶绿素含量(SPARD值)分别提高2.00%～4.13%和9.5%～12.37%,2.74%～4.44%和6.01%～6.66%;所有机械深施缓释肥(T1、T2和T3)处理较人工撒施缓释肥(CK),在齐穗期、齐穗期后15d和成熟期的剑叶超氧化物歧化酶(SOD)和过氧化物酶(POD)活性均显著提高,而丙二醛(MDA)含量均显著降低。 In order to explore the high-yield mechanism of deep mechanized application of the slow-release fertilizers,the field experiments were carried out to study effects of deep mechanized application of slow-release fertilizers on physiological characteristics of precision hill-direct-seeding super rice which were Peizataifeng（Super Hybrid Rice） and Yuxiangyouzhan（Super Inbred Rice）.Results showed that compared with manual broadcast application of the slow-release fertilizers at the full heading stage and the mature stage,the photosynthetic rate and the chlorophyll content（SPARD value） increased significantly by 22.00%-4.13%,9.5%-12.37%,2.74%-4.44% and 6.01%-6.66%,respectively,and the activities of super-oxide dismutase（SOD） and peroxidase（POD） of precision hill-direct-seeding super rice of all treatments（including T1,T2 and T3） for deep mechanized application of the slow-release fertilizers increased significantly,while their malondialdehyde（MDA） content reduced significantly at full heading stage,15 days after full heading and mature stage.These results indicated that the deep mechanized application of the slow-release fertilizers can promote photosynthesis and resist,then enhance yield of precision hill-direct-seeding super rice.

关 键 词： 作物 耕作 试验 机械深施肥 缓释肥 精量穴直播 生理特性

领　　域： [农业科学] [农业科学] [农业科学]