控释氮肥对寒地水稻植株生长发育及产量的影响

Effect of Controlled Release Nitrogen Fertilizer on Plant Growth and Yield of Cold Rice

为了探讨控释氮肥施用最佳用量,试验设5个处理,研究水稻控释氮肥对寒地水稻植株生长发育及产量的影响。结果表明:整个生育期控释氮肥处理提高了水稻植株的株高、促进分蘖数形成,且T4处理(控释氮肥90%)施用好于普通尿素施用;提高干物质积累,成熟期控释氮肥处理干物质积累量与T2处理相比提高了4.82%～10.78%,与T1处理相比提高了12.45%～18.41%。控释氮肥处理产量高于常规施肥处理,且T4处理产量最高,达到7944.44kg/hm2,与T2处理相比提高7.3%,与T1处理相比提高19.0%,差异都达到显著水平。因此,从产量和农艺性状分析,控释尿素90%处理是比较理想的肥料用量选择。

For the purpose of application of controlled release nitrogen best dosage, set five treatments, researched on rice controlled release nitrogen cold rice plant growth and yield influence. The results showed that, the growth of controlled release nitrogen treatment improved the rice plant height, tiller number, and T4 treatment （controlled release nitrogen 90% ） applied to common urea application. Promote the dry matter accumulation, mature controlled release nitrogen treatment dry matter accumulation and T2 treatment compared with increased by 4.82%-10.78%, compared with T~ treatment increased by 12.45%-18.41%. Controlled release nitrogen treatment yield higher than conventional fertilization treatment, and T4 treatment, the highest yield reached 7944.44 kg/hm^ 2, compared with T2 treatment increased by 7.3%, compared with the T1 treatment increased by 19.0%, the differences were significant. Therefore, from production and agronomic characters analysis, controlled release urea 90% processing was an ideal choice fertilizer use.