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，通过开发耕种日历来稳定地耕种大米，该日历已完成，该日历已安排使用叶子颜色计的耕种管理。用于此实验的叶子颜色计为Spad-501和Spad-502。进行了实验实验。使用土壤箱进行了实验室测试。测试了DSSP和常规移植方法。在本质上，仅对耳叶进行叶子颜色的测量。在实验过程中，发现从上三叶（包括耳叶）的叶子颜色值中的最大值证明了Spad值。这些SPAD值用于开发耕作日历。还发现，即使在相同的栽培条件下，品种之间的叶子颜色之间存在广泛的差异。但是，可以使用适当的转化因子来补偿由于品种差异而引起的叶子颜色的差异。未来的任务应该是确定各种大米的这些转换因子。基于SPAD值开发的培养日历与基于富士叶颜色量表的日历很大不同。新开发的种植日历的关键要点是，每个山丘的茎比常规数量要多，并最大程度地提高每个谷物的数量。这起源于新开发的方法与基于V形状理论的常规方法之间的叶子颜色管理差异。使用一些商业水稻生产领域进行了一些证明作用以证明新开发方法的有效性。预计将有很高的收益率。对于未来的研究，预计将发展以下管理层。必须开发降低的涂层管理，以根据新开发的耕作日历来控制叶子颜色。