二三の肥料及びその施用法がケナフ纎維の生産に及ぼす影響

概要

論文の詳細を見る
In the view of studying the influence of fertilizing ammonium sulphate, ammonium nitrate and farmyard manure and their split applications on the growth and yield of kenaf, the present experiments were carried out in 1949 and 1050 on the so-called "Kantoloam," i.e. volcanic ash clay soil in the Kanto District. 1. Application of farmyard manure, especially mixed with inorganic fertilizers, promoted the growth of kenaf and increased the production of its fibres significantly. 2. Ammonium nitrate was as much efficacious as ammonium sulphate by splitting its application in two times. The nodes with leaves of normal form located lower and those with abnormal leaves higher on the stem as the plant grew more vigorously. 4. To cultivate successfully such a deep-rooting and short-period crop as kenaf on a soil with large water-and fertilizer-holding capacities, it was found to be better to promote the root growth during the early life of the plant by means of supplying sufficient amounts of inorganic fertilizers, especially mixed with farmyard manure at the seeding time. 5. The time of application of additional fertilizer was an important factor affecting the growth and yield, Split applications of fertilizers might become fully effective by irrigation.
日本作物学会の論文
1953-06-30