Abstract:

In order to study the application effects of organic water-soluble micronutrient fertilizer on yield and quality of rice in different densities, using Yanfeng 47 as material, the main cultivar in Binhai region, and spraying foliar micronutrient fertilizer‘New America Star’（WF）, conventional fertilizer potassium dihydrogen phosphate （WC）, and water （CK） respectively, when the seedlings turning yellow, 2~3 days before transplanting, crevasse period and full panicle stage. The results showed that the yield of Yanfeng 47 was decreased with the decrease of planting density. The quality of rice is less affected by planting density. When the hole spacing is 16 cm, the yield of WF treatment is 11 298.15 kg/hm2, increased by 16.96% compared to CK; When the hole spacing is 18 cm, the yield of WF treatment is 10 994.85 kg/hm2, increased by 15.42% compared to CK. The yield of WF at different hole distance was not significant. Compared with the WC and CK, the protein content of WF was increased by 1.2 percentage points and 0.9 percentage points respectively when the hole spacing is 16 cm; the protein content of WF was increased by 0.6 percentage points and 1.0 percentage points respectively when the hole spacing is 18 cm. So, spraying foliar micronutrient fertilizer ‘new America Star’ could increase the yield and improve the quality of rice.

Key words: rice, organic micronutrient fertilizer, growth and development, density, yield, quality

摘要：

为探究有机水溶性微肥在不同密度水稻群体上的应用效果，以滨海地区主栽品种盐丰47为供试材料，分别于秧苗发黄时、移栽前2~3 d、破口期以及齐穗期对不同密度水稻群体喷施叶面微肥“新美洲星”（WF）、常规肥磷酸二氢钾（WC）和等量清水（CK）。结果表明，盐丰47产量随着栽培密度的减小而减小，稻米品质受密度变化的影响较小。在丛距为16 cm时，WF处理产量为11 298.15 kg/hm2，比CK增产16.96%；在丛距为18 cm时，WF处理的产量为10 994.85 kg/hm2，比CK增产15.42%。不同丛距WF处理间产量差异不显著。丛距为16 cm时，WF处理的蛋白质含量分别比同丛距的WC处理和CK增加1.2个、0.9个百分点；丛距18 cm时，WF处理的蛋白质含量分别比同丛距的WC处理和CK增加0.6个、1.0个百分点。说明喷施叶面微肥“新美洲星”能实现水稻增产提质的效果。

关键词: 水稻, 有机微肥, 生长发育, 密度, 产量, 品质