摘要
为了解小麦控株增穗栽培模式在源流库方面的特点,对5个品种的控株增穗栽培与常规栽培两种栽培模式进行了比较研究。结果表明,控株增穗栽培的单位面积穗数、收获指数以及产量均明显高于常规栽培;控株增穗栽培模式在产量形成期总叶面积系数稳定的前提下,通过缩小上三叶面积来增加单位面积穗数,使非叶光合面积增加,最终提高总的光合源,同时群体的总粒数和总维管束数也显著高于常规栽培,而且控株增穗栽培的分蘖急增速减特点突出。因此认为,控株增穗栽培在源、库、流方面较对照都有明显的优势。
In order to find out the advantage of source-sink-translocation in the high-yield cultivation pattern with controlling plant type and increasing ear number （CPCE）, a comparative experiment with 5 cultivars and 2 cultivation patterns including CPCE and conventional cultivation （CK） was conducted. The results indicated that ears per unit area, harvest index （HI） and yield in each treatment with CPCE were greatly higher than those in treatment with CK. Furthermore, the characteristics of CPCE could be summarized as followed. Under the premise of keeping stable total leaf area, the photosyn-thetic area in non-leaf organs and the total photosynthetic source and the number of total grain and to- tal vascular bundle increased by reducing the area of top three leaves at the same time; The population growth and development of CPCE treatments behaved as tillers increasing rapidly and decreasing slowly, and so on. The conclusion was drawn that there was significant advantage in CPCE comparing with in CK, moreover, the graln-leaf ratio improved by increasing ear-leaf ratio, and metastasis rate of dry matter before flowering improved by increasing total vascular bundle number in population, and ineffective tillers reduced as tillers increasing rapidly and decreasing slowly, the HI increased as well. On the other side, once encountering disadvantage weather, the max grain cubage and 1000-grain weight with CPCE treatments reduced gristlier than those with CK. The above problems should be paid attention to and improved in the future.
出处
《麦类作物学报》
CAS
CSCD
北大核心
2008年第3期502-506,512,共6页
Journal of Triticeae Crops
基金
中国粮食与食物安全研究中心资助项目
关键词
小麦
稳叶控株增穗
源库流特点
Wheat
Controlling plant type and increasing ear numbers
Source-sink-translocation characteristic
