应用Datalogger System研究不同株型品种稻田小气候的特征

本文分析了由微气候“数据记录仪”(Datalogger)自动收集的资料,探讨了稻田在水稻灌浆期的小气候特征。结果表明:直立叶品种比平展叶品种在冠层以下15cm处光量子相差1倍左右;植株温度及冠层叶面温度品种间差别较小,稻田1.5m高处空气湿度品种间不存在差别。初步认为直立叶型品种能更充分利用光能,这是直立叶型品种产量高于水平叶型品种的重要原因。此外还对Datalogger所获得的田间气候资料可靠性进行检验、肯定。

STUDY ON THE CHARACTER OF PADDY FIELD MICROCLIMATE WITH VARIOUS PLANT TYPE OF RICE CULTIVARS BY APPLICATION OF DATA LOGGER SYSTEM

Data of microclimate of the paddy field recorded by a micrometeorologi- cal data logger system was analyzed intensively and the microclimatic chara- cters during late rice grain filling period was discussed in detail.Data showed that the quanta value in erect-leaf cultivar was almost as much as two times comparing the one with horizontal-leaf in 15 centimeters height inside the canopy;difference of temperature recored in the surface of plant and leaf between two cultivars inside the canopy was negligible;relative humidity was also recorded at the 1.5 meter height.Experimental data indicated the better utilization of solar energy was the most important factor for contributing higher yielding potential in erect-leaf cultivars.Aside from this,reliability for using this micrometeorological data logger system was also verified.