イネ間中播きによるコモンベツチ又はレンゲとオートとの混ぜ播き栽培に関する研究(予報)

概要

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1. We studied on the common vetch (Vicia sativa)-oats and milk vetch (Astragalus sini cus)-oats mixed cultivation by means of intersowing among standing rice plants as their after crops.2. Varied sowing rates of the common vetch-oats mixture yielded green forage given in fig. 1. The mixtures contained rather plenty of the oat seeds and fertilized with nitrogen performed higher yields which contrary to the sesults of the mixing rate tests carried out formerly on the cultivated soil conditions by the authors. The differences of the agronomic conditions favoured to the intersown mixture fron that favoured to the cultivated seed bed conditions may be attributed to the differences of the responses of the species to the soil physical of aeration conditions. 3. Similar results were obtained from the test on the milk vetchoats mixture as given in fig. 2. 4. Responses of common vetch-oats combination to the date of sowing with regard to the date of drainage of the paddy rice fieid were tested. The highest yield of the mixture obtained from the sowing date of 3 days after the drainage Setting percentages of seedlings were reduced severerin oats than common vetch when they were intersown on or previous to the day of drainage, because of the harmful effects on the seeds of excess soil water in the paddy field.
日本草地学会の論文