...Flooded direct seeding involves sowing seeds in flooded rice paddies, and although it can be used in a wide range of areas, its drawbacks include poor seedling establishment due to lack of oxygen and significant weed damage. Recently, a cultivation method called "flooded direct seeding in soil" has been developed and is attracting attention, in which seeds coated with calcium peroxide (brand name Calper), an oxygen generating agent, are sown with a special machine and used in combination with selective herbicides. Direct seeding is expected to help reduce the cost of rice cultivation, but there are still many issues that need to be considered, such as suitability for each region, suitable varieties, and fertilization methods, and it is unknown to what extent it will be replaced by transplanting cultivation. ... *Some of the terminology that mentions "Culper" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…湛水直播は湛水状態の水田に播種するもので,適用地域は広いが,酸素不足による苗立ちの不良や雑草害の著しいことが欠点とされる。最近,酸素発生剤であるカルシウムパーオキサイド(商標カルパー)を粉衣した種子を専用の機械で播種し,選択性の除草剤などを併用する〈湛水土壌中直播〉栽培法が開発され注目されている。直播栽培は稲作のコストダウンに資するものとして期待されるが,なお地域による適合性,好適品種,施肥法など検討を要する問題も多く,どの程度移植栽培に替えるかは未知数である。… ※「カルパー」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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