摘要
为探索控制灌溉条件下水稻施肥水平与产量关系,以水稻品种龙盾104进行了不同施肥水平的3次重复试验。试验结果表明:在180～480 kg/hm2试验施肥水平范围内,施肥水平与产量之间存在着极显著相关关系;在现有施肥技术水平条件下,增量施肥的增产效应逐渐减少,直到420 kg/hm2施肥水平时产量达到最高,其后随施肥水平的增加反而产生了负面的减产效应;在目前7 500 kg/hm2水稻平均产量基础上达到适度增产目标,施肥水平最低应控制在200 kg/hm2水平;在保证一定单产水平条件下,应尽量采取少施化肥措施,严禁采用400 kg/hm2以上施肥水平的水稻生产方式。
In order to study the relationship between fertilizer level and yield of paddy rice under the condition of controlled irrigation,three times repeated experiments had been tested based on the rice variety of longdun 104 with different fertilizer levels.The results showed that the fertilizer level had a very significant correlation with yield from the fertilizer 180 kg/hm2 to 480 kg/hm2,in existing fertilization technology condition,higher fertilizing amount took less yield increase,the yield reached a new high with the fertilizer level with 420 kg/hm2,when the fertilizing amount exceeded 420 kg/hm2,the yield decreased.If the fertilizer level was controlled to the limit of 200 kg/hm2,the yield should increase properly on the base of 7 500 kg/hm2.In guarantee of per unit yield,the fertilizing amount should be less than 400 kg/hm2.
出处
《现代农业科技》
2012年第17期9-10,13,共3页
Modern Agricultural Science and Technology
基金
水利部综合事业局"水环境修复技术与推广"项目(2009财第10号)
关键词
水稻
控制灌溉
施肥量
产量
paddy rice
controlled irrigation
fertilizing amount
yield
