A Demonstrative Study on Rice Culture Management based on Leaf Color of Rice Plant

基于水稻叶色的水稻栽培管理示范研究

基本信息

批准号：
62860003
负责人：
NAKAMURA Yoshiaki
金额：
$ 2.69万
依托单位：
Ishikawa Agricultural College
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research
财政年份：
1987
资助国家：
日本
起止时间：
1987 至 1989
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-62860003/
关键词：
CULTIVATION CALENDAR OF RICE S P A D CHLOROPHYLEMETER LEAF COLOR DIRECT SEEDING WITH COATED RICE IN SUBMERGED PADDY FIELD MID TERM TOP DRESSING 水稲の葉色葉色の測定位置品種と葉色水稲の栽培こよみ穂肥登熟歩合

项目摘要

A three-year project aming at stable-high-yielding cultivation of rice by developing a cultivation calendar which schedules the cultivation management using leaf color meters has been completed. The leaf color meters used for this experiment were SPAD-501 and SPAD-502. A field experiment was conducted. Lab tests using soil bins were conducted. The DSSP and the conventional transplanting method were tested.Initially, the measurement on the leaf color was taken only for the ear leaf. During the experiment it was found that the maximum value among the values of leaf color taken from the upper three leaves including the ear leaf substantiates the SPAD value. Those SPAD values were used to develop the cultivation calendar. It was also found that broad differences in leaf color between varieties were exist even under the same cultivation condition. However, the difference in leaf color due to the varietal difference can be compensated by using appropriate conversion factors. The future task should be the determination of those conversion factors for every variety of rice. The cultivation calendar developed based on SPAD values much differs from the ones based on the Fuji leaf color scale. The key points that the newly developed cultivation calendar includes are to have more number of stalkes per hill than conventional and to maximize the number of grains per head. This originates the difference in the leaf color management between the newly developed method and the conventional method based on the V shape theory. Some demonstrative operation to prove the effectiveness of the newly developed method were conducted using some commercial rice production fields. A high yield has been expected.For the future study the following management is expected to develop. A reduced-top-dressing-management to control the leaf color according to the newly developed cultivation calendar must be developed.

一个为期三年的项目已经完成，该项目旨在通过开发种植日历来实现水稻的稳定高产栽培，该日历利用叶色计安排种植管理。本实验使用的叶色计为SPAD-501和SPAD-502。进行了现场实验。使用土壤箱进行了实验室测试。对DSSP和常规移植方法进行了测试。最初，仅对穗叶进行叶色测量。实验过程中发现，取自包括穗叶在内的上部三片叶子的叶色值中的最大值证实了SPAD值。这些 SPAD 值用于制定栽培日历。研究还发现，即使在相同的栽培条件下，不同品种之间的叶色也存在较大差异。然而，由于品种差异而导致的叶色差异可以通过使用适当的转换因子来补偿。未来的任务应该是确定每种稻米的换算系数。基于 SPAD 值制定的栽培日历与基于富士树叶色标的栽培日历有很大不同。新开发的耕作日历的要点是每山的秸秆数量比传统的多，并最大限度地提高每头的谷物数量。这源于新开发的方法与基于V形理论的传统方法在叶色管理方面的差异。在一些商业水稻生产田进行了一些示范操作，以证明新开发方法的有效性。预计会有高产量。对于未来的研究，预计将发展以下管理。必须制定减少追肥管理，以根据新制定的栽培日历控制叶色。