一、草木樨氮素利用率试验是采用盆栽法,分为对照(不施肥料)、施草木樨茎叶和兔粪3个处理,4次重复。每盆装风干土15斤,施草木樨茎叶和兔粪的两个处理,每盆氮素施入量相同(1克氮素)。指示作物谷子,每盆留8株。成熟时,分部位(穗、茎叶和根系)收获,并分别测定其含氮量。然后用差值法计算氮素利用率。 First, the use of nitrogen and nitrogen fertilizer plant experiments are potted, divided into control (no fertilizers), Shi Kusanagi stem and leaves and rabbit manure 3 treatment, 4 times repeated. Each pot was packed with 15 kg of air-dried soil, applied with two treatments of stems and leaves of grass mulberry leaves and rabbit manure, and the same amount of nitrogen applied per pot (1 g of nitrogen). Directed crop millet, leaving 8 plants per pot. At maturity, the sub-locus (spike, stem and leaf and root) was harvested and the nitrogen content determined separately. Difference method is then used to calculate nitrogen utilization.