@article{oai:obihiro.repo.nii.ac.jp:00000795,
 author = {申, 宝明 and 佐藤, 禎稔 and Kato, Taku and 加藤, 拓 and Tani, Masayuki and 谷, 昌幸 and Kishimoto, Tadashi and 岸本, 正},
 journal = {農業機械学会北海道支部会報, Journal of Hokkaido Branch of the Japanese Society of Agricultural Machinery},
 month = {},
 note = {application/pdf, マニュアスプレッダで散布された堆肥の乾物質量と窒素投入量の圃場内分布を評価するために，３つの圃場で散布試験を実施した。供試堆肥の含水率は平均で５３～８１％と圃場ごとに大きな差異が見られ，その変動係数はB とC 圃場が４．６％以内であったのに対し，A 圃場は９．４％以上とばらつきが大きかった。バーク堆肥の窒素含有量は牛ふん堆肥に比べると少なく，その平均はA 圃場で１４．７g／kg, C 圃場で１６．８g／kgであった。圃場全体の堆肥の散布量と窒素投入量の変動係数はいずれの圃場でも４９％以上とばらつきが大きかった。しかし，堆肥の含水率の変動が少ない圃場では，堆肥の現物質量と窒素投入量の分布形状がほぼ一致することから，圃場内の窒素投入量を均一にするためには，堆肥水分のばらつきを少なくし，かつ堆肥散布精度を向上させることが必要であると考える。, In order to evaluate distribution variability of the dry weight and the amount of nitrogen input of the compost applied with manure spreaders, the experiments of compost application were carried out in three fields. The mean values of compost moisture content at three experimental fields range from 53 to 81%, and their differences between three fields were significant. The coefficients of variations (CVs) of moisture contents of B and C fields were less than 4.6%. In A field the CV was more than 9.4%, and the variation was great than those of B and C fields. The nitrogen content of bark compost was smaller than that of cattle compost. The average of nitrogen content of bark compost in A field and in C field were 14.7g / kg and 16.8g / kg respectively. The CVs of the amount of compost and nitrogen input at the three fields were large as 49.3% and more. However, the distributions of the amount of the compost application and the nitrogen input were similar in fields where the variation of the moisture content was small. It can be said that the reduction of moisture variability and the improvement of compost application accuracy are necessary to achieve the uniform distribution of the nitrogen input in the field.},
 pages = {13--18},
 title = {マニュアスプレッダで散布された堆肥の散布量と窒素投入量の圃場内分布},
 volume = {51},
 year = {2011}
}