摘要
2012年仪征市土壤有效锌普查结果表明,仪征市土壤有效锌含量在0.35-8.31mg/kg之间,平均为1.04mg/kg,属中等水平。通过试验研究表明,在土壤有效锌含量中等水平下,水稻施锌有一定的增产效果,最高增产幅度达15%。增产原因主要是锌肥能促进分蘖,增加有效穗。锌肥的最佳用量为1.2k-667m^2,在这一范围内,增产幅度产量随用量增加而提高,超出一定的施用量时产量增幅会下降。
The general survey of available zinc were made in Yizheng in 2012, the result indicated that content of available zinc was from 0.35 mg/kg-8.31 mg/kg(averaged about 1.04 mg/kg) and it was medium level The test indicated that zinc can increase yield which the highest increase being 15% under medium level of available zinc in soil, the reason of increase yield was that zinc can promote tillering and increase the effective panicles, the optimum amount was 1.2 kg/667 m^2, in this scope, incremental range can increased with the increase of zinc, beyond the range, the incremental range would decline.
出处
《北方水稻》
CAS
2014年第2期6-9,共4页
North Rice
基金
测土配方施肥项目专项资金资助
关键词
锌肥
水稻
产量
最佳用量
Zinc fertilizer, Rice, Yield, Optimum amount