摘要
【目的】明确杂交晚稻需水量在浙江省境内的空间分布特性,以期为浙江省水稻的节水灌溉和合理布局提供依据。【方法】采用地统计与GIS相结合的方法,研究了浙江省杂交晚稻丰优9339各生育期需水量的空间变异性。【结果】①浙江省杂交晚稻丰优9339各生长阶段需水量为22.40～82.79 mm,以成熟收获期水稻需水量的变异系数最大,以拔节孕穗期的变异系数最小。②杂交晚稻丰优9339各生育期需水量的C_0/(C_0+C)值在0.20～0.50。其中分蘖期需水量的C_0/(C_0+C)值最少,为0.2,播种育苗期需水量的C_0/(C_0+C)值最大,为0.5。各生育期需水量的变程在84 600～2229 900 m,以拔节孕穗期需水量的变程最小,以播种育苗期需水量的变程最大。③浙江省杂交晚稻丰优9339大田生长期水稻需水量大于323.50 mm的高值区位于浙江省的西南部、中部和北部的一部分地区,占研究区总面积的31.29%,大部分地区的水稻需水量为270.83～323.49 mm,占研究区总面积的66.43%。【结论】在水稻各生育时期中,分蘖期时水稻需水量最大,其次是拔节孕穗期。需水量高值区在浙江省的西南部、中部一带,这与生产实际情况一致。
【Objective】In order to provide scientific references for water-saving irrigation and rational distribution of paddy rice in Zhejiang province, spatial distribution of water requirement of hybrid late indica rice was determinded in this region.【Method】Geostatistics method and GIS techniques were applied to study the Spatial variability of the water requirement of hybrid late indica rice Fengyou 9339 during growth in the fields in Zhejiang province.【Result】water requirement of hybrid late indica rice Fengyou 9339 during growth in the fields in Zhejiang province varies from 22.40 to 82.79 mm. The VC of water requirement of mature and harvesting period is the biggest among many stages, while the VC of requirement of jointing-booting stage is the smallest.The C0/(C0+C) of water requirement of hybrid late indica rice Fengyou 9339 during growth in the fields in Zhejiang province is 0.20-0.50. The range of water requirement of hybrid late indica rice Fengyou 9339 during growth in the fields in Zhejiang province is 84 600-2229 900 m. The water requirement more than 323.50 mm occurred mainly in the western and southern parts, middle parts and northern parts of Zhejiang province. The water requirement of many parts is in range of 270.83-323.49 mm,occupying 66.43 % of the whole regions.【Conclusion】The water requirement of paddy rice at tillering is the greatest among many growth stages, while the second is at jointing-booting stage.The water requirement with higher ualue was found in the middle parts and southwest parts of Zhejiang province, which was consistent with actual production situation.
作者
陈海生
朱兆平
CHEN Hai-sheng;ZHU Zhao-ping(Zhejiang Tongji Vocational College of Science and Technology,Zhejiang Hangzhou 311233,China)
出处
《西南农业学报》
CSCD
北大核心
2019年第3期470-475,共6页
Southwest China Journal of Agricultural Sciences
基金
浙江省科技厅公益性项目(2012C23031)
关键词
需水量
地统计
杂交晚稻丰优9339
浙江
Zhejiang
Geostatistics
Hybrid late indica rice Fengyou 9339
Water Requirement
