摘要
本研究选择水稻抛秧种植中主要的影响因素:播种期、密度、施氮、施磷为调控因子,运用系统工程学原理,通过田间试验和计算机仿真处理得出对产量的影响大小为:密度>播种期>施氮>施磷;最佳配套技术为:播种期4月12~19日,密度46.95~47.85万穴/hm2,施氮254.7~260.4kg/hm2,施P2O569.45~77.40kg/hm2,可获得10500kg/hm2以上的产量。
The main influential factors in rice planting by throwing seedling:seeding period,density,nitrogen and phosphoric fertilizer application,were chosen as regulation factors in the test. Based on system engineering principle,it was obtained through field experiment and computer simulation that the factors were in following sequence as to their effect on the yield:density>seeding period>nitrogen application>phosphoric fertilizer application.The optimum set of techniques is:seeding period on April 12~9,a density of 469.5~478.5 thousand holes/hm2,nitrogen of 254.7~260.4kg/hm2 and P2O5 of 69.45~77.40kg/hm2. With this a yield of over 10,500kg/hm2 would be achieved.
出处
《宁夏农林科技》
1997年第6期7-11,共5页
Journal of Ningxia Agriculture and Forestry Science and Technology
关键词
水稻
抛秧
农艺措施
Rice
Seedling throwing
Agronomic Measures.