摘要
采用地统计学原理和GIS相结合的方法,研究了浙江省单季稻产量及其各生长期降水量空间变异性.结果表明,浙江省单季稻产量的块基比C/（C0＋C）为0.762,具有强空间相关性.各生育期降水量的C/（C_0＋C）在0.78~0.98之间,都具有很强的空间相关性.其中拔节孕穗期的降水量对单季稻产量影响达极显著水平,应重视该生育期田间水分的管理,力争延长水稻根系和叶片的功能期.
Geostatistics method and geographic information system（ GIS） techniques were applied to study the single cropping rice output and the precipitation spatial variability during rice growing period in Zhejiang. The results showed the C /（ C0＋ C） of single cropping rice output is 0. 762 and the C /（ C0＋ C） of precipitation during rice growth in the fields is0. 78 ~ 0. 98,indicating a strong spatial correlation in the study regions. Precipitation during rice sowing and seedling stage ranges 258. 00 to 315. 00 mm,occupying 49. 48% of the whole regions,precipitation during rice tillering stage ranges120. 00 to 174. 00 mm,occupying 64. 52% of the whole regions,and precipitation during rice jointing-booting stage ranges162. 00 to 222. 00 mm,occupying 41. 42% of the whole regions,while precipitation during grain filling period ranges168. 00 to 213. 00 mm,occupying 56. 42% of the whole regions.
出处
《浙江水利水电学院学报》
2016年第2期48-52,共5页
Journal of Zhejiang University of Water Resources and Electric Power
关键词
浙江
地统计
单季稻
产量
降水量
Zhejiang
geostatistics
single-cropping rice
output
precipitation
