| 引用本文: | 白晨阳,姜浩,苏庆旺,等.吉林省中部地区旱作条件下不同水稻品种对播期的响应特征[J].灌溉排水学报,0,():-. |
| baichenyang,jianghao,suqingwang,et al.吉林省中部地区旱作条件下不同水稻品种对播期的响应特征[J].灌溉排水学报,0,():-. |
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| 吉林省中部地区旱作条件下不同水稻品种对播期的响应特征 |
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白晨阳1, 姜浩1, 苏庆旺1, 李韫哲1, 魏晓双1, 崔菁菁2, 杨美英3, 王东超4, 武志海2
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1.吉林农业大学农学院;2.吉林农业大学农学院、国家农作物品种审定特性鉴定站;3.吉林农业大学生命科学学院;4.长春吉农大农业科技有限公司
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| 摘要: |
| 【目的】研究水稻旱作条件下，播期与品种类型对生育期农艺性状的影响，为不同类型品种选择适宜播期提供科学依据。【方法】以早熟粳稻、中熟粳稻、晚熟粳稻三种类型的水稻为供试材料，设置 5个播期（分别为4月25日、4月30日、5月5日、5月10日、5月15日），研究各品种类型水稻旱作产量、生育表现及农艺性状的特点。【结果】各品种水稻旱作产量表现为早熟粳稻>晚熟粳稻>中熟粳稻。适宜的播期可使植株拔节期后叶绿素含量提高13.5 %，且有利于上三叶叶面积的增加。随着播期推迟，干物质积累量呈现先下降后上升的趋势，早熟品种的株高也同样表现出相同趋势。合理的播种期有利于籽粒增重，分期播种对水稻旱作千粒重和结实率影响较小，但对穗数和穗粒数影响较大，变异系数达到20.9 %和23.7 %。【结论】在吉林省中部地区水稻旱作栽培，早熟粳稻品种在5月10—15日播种，中熟及晚熟粳稻品种在4月30日—5月5日间播种，能够适当提高产量。 |
| 关键词: 水稻旱作;播种时期;品种类型;农艺性状 |
| DOI： |
| 分类号:S352.1 |
| 基金项目:旱作优质水稻节本增效栽培关键技术研究（20190301061NY）； 国家重点研发计划项目（2018YFD0300207-2）；中国工程院院地合作重点咨询项目（2019-JL-3-1）； 吉林农业大学大学生科技创新基金 |
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| Response of Three Varieties of Rice to Sowing Dates Under Dry Cultivation in Middle Areas of Jilin Province |
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baichenyang1, jianghao1, suqingwang1, liyunzhe1, weixiaoshuang1, cuijingjing2, yangmeiying3, wangdongchao4, wuzhihai2
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1.College of Agriculture, Jilin Agricultural University;2.College of Agriculture, Jilin Agricultural University、National Crop Variety Examination and Appraisal Station;3.College of Life Science, Jilin Agricultural University;4.Changchun Jinong University Agricultural Technology Co.
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| Abstract: |
| Abstract 【Objective】To study the effects of sowing date and variety type on rice yield, growth period and agronomic traits of rice under dry cultivation condition, and to provide a scientific basis for selecting suitable sowing dates for different varieties.【Methods】In this research we took early maturity japonica, middle maturity japonica and late maturity japonica as experimental materials and set up five sowing dates on April 25, April 30, May 5, May 10, May 15, respectively, which to study the?characteristics of yield, growth and agronomic traits of different rice varieties under dry cultivation condition.【Results】The rice in dry cultivation yields of the three varieties were manifested included: early maturing japonica rice> late maturing japonica rice> medium maturing japonica rice. The results showed that the leaf area and chlorophyll content could be increased by 7.6% and 13.5% by selecting proper sowing dates. Dry matter accumulation of three types of rice showed a trend of first decreasing and then increasing with the delay of sowing date, and the plant height of early maturing japonica rice also showed the same trend. proper sowing dates was beneficial to grain filling, and sowing at different stages had a little effect on the seed setting rate and?thousand grain weight of rice under dry cultivation condition, but it had a large effect on spike number and grain number, The coefficient of variation of the number of spike number reached 20.9%, and the coefficient of variation of the number of grain number reached 23.7%. 【Conclusion】Early maturing japonica rice in dry cultivation optimal sowing dates ranged from May 10 to May 15,and late maturing japonica rice and medium maturing japonica rice optimal sowing dates ranged from April 30 to May 5 in central region of jilin province, that?increased the yield . |
| Key words: dry cultivation of rice; sowing dates; variety type; agronomic characters |
