不同温湿度条件下叠盘方式育秧对机栽水稻秧苗质量与产量的影响研究

该试验以浙江省建德市为试验地点,选用当地推广的嘉丰优2号杂交中籼稻品种,利用杭州丰筑XL-21型智能温湿度控制装备,比较不同温湿度组合下叠盘育秧与常规育秧的秧苗特性及机插水稻产量差异。结果表明,叠盘35℃/90%处理培育的秧苗综合性状表现最佳,成苗率达96.1%,较常规育秧对照高12.8个百分点,苗高、叶龄、根系活力等指标亦明显改善,秧苗缺苗率、漏插率和浮苗率分别降至3.6%、1.1%和1.6%,较常规育秧显著降低,最高产量9412.5 kg·hm^(-2),较常规育秧增产15.1%。综合分析认为,温度35℃、相对湿度90%是建德市嘉丰优2号水稻叠盘育秧的最佳温湿度条件,叠盘育秧的增产优势基本随温湿度条件改善而提高。

The test took Jiande City,Zhejiang Province as the test site.The locally promoted hybrid medium indica rice variety Jiafengyou 2 was selected and Hangzhou Fengzhu XL-21 intelligent temperature control equipment was used to compare the seedling characteristics and machine transplanted rice yield differences between stacked and conventional seedlings under different temperature and humidity combinations.The results showed that,The comprehensive characteristics of seedlings cultivated by stacking 35℃/90%treatment performed best.The seedling rate reached 96.1%,which was 12.8 percentage points higher than that of conventional seedling raising control.Indicators such as seedling height,leaf age,and root vitality were also significantly improved.The seedling lack rate,missed transplanting rate and floating seedling rate dropped to 3.6%,1.1%and 1.6%,respectively,which was significantly lower than that of conventional seedling raising.The highest yield was 9412.5 kg·hm^(-2),which increased by 15.1%compared with conventional seedling raising.Comprehensive analysis shows that the temperature of 35℃and relative humidity of 90%are the best temperature and humidity conditions for stacked rice seedlings of Jiafengyou 2 in Jiande City.The yield increase advantage of stacked rice seedlings basically increases with the improvement of temperature and humidity conditions.