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本文是利用~(15)N 示踪技术研究了田间微小区中液氨及硝化抑制剂 cp 对水稻的增产作用,主要结果是:1.液氮基肥和 cp 都有明显的增产效果,前者和对照比(等 N 量硫铵),籽粒增产了7.3%。加 cp 之后增产了15.6%,而液氨基肥加 cp 比不加的增产了7.7%。2.麦茬水稻一生中地上部份液氨基肥的吸收和对照相似,利用率均为29%左右。但是添加 cp 或增施6斤 N/亩穗肥,其肥料利用率也相应增加到47.4%和37.2%。3.关于肥料氮在植株体内的分配:液氨基肥处理的肥料氨在籽粒和茎秆中各占50%,随着 cp 的加入,其分配百分数相应为69.77%和30.24%。因此硝化抑制剂cp,不仅提高了氨肥的利用率,而且还有促进基肥氨素向籽粒转移的功能。
In this paper, the effect of liquid ammonia and nitrification inhibitor cp on rice yield was studied using ~ (15) N tracer technique. The main results are as follows: 1. Both liquid nitrogen-based fertilizer and cp have obvious yield increase effects. The former and The control ratio (equivalent N ammonium sulfate) increased the grain yield by 7.3%. After adding cp increase of 15.6%, while the liquid fat plus cp than the increase of 7.7%. 2 wheat stubble rice throughout the life of liquid ammonia absorption and control similar, the utilization rate of about 29%. However, adding cp or applying 6 kg N / acre of panicle fertilizer increased its fertilizer utilization rate to 47.4% and 37.2% respectively. 3. The distribution of fertilizer nitrogen in plants: Ammonia fertilizers treated with ammonia fertilizer accounted for 50% of the grains and stems, respectively, with the percentage of 69.87% and 30.24% corresponding to cp addition. Therefore, nitrification inhibitor cp, not only improves the utilization of ammonia fertilizer, but also to promote basal ammonia to grain transfer function.