水稻五优1号群体结构与产量及米质关系的研究

Effect of Population and Fertilizer Treatments on the Yield and Quality of Rice Variety "Wuyou 1"

摘要:

根据两年试验结果表明,五优1号水稻品种最佳经济氮肥施用量为125.9～139.4kg/hm²,最佳插秧密度为21.7穴/m²。千粒重和成熟度与碾米品质分别呈显著和极显著相关。氮肥施用量与蛋白质和直链淀粉含量呈曲线关系,氮肥施用量112.8kg/hm²的条件下可使蛋白质含量达到最高,其值为8.08%;氮肥施用量128.9kg/hm²处理下直链淀粉最高含量为18.0%。密度与蛋白质和直链淀粉含量呈曲线关系,16.8穴/m²密度下蛋白质最高含量为8.2%;密度16.3穴/m²,直链淀粉最高含量为18.2%。

Abstract:

Experimental results for two years indicate that optimum nitrogen fertilizer application was 125.9 to 139.4 kg/hm2, optimum density 21.7 cluster/m2 for rice variety "Wuyou 1". Rice quality was significantly correlated with grain weight and maturity. Protein and amylose contents were curvilineal correlated with nitrogen fertilizer application. The highest protein content reached 8.08% when 112.8 kg of nitrogen fertilizer was applied per hectare, whereas the highest amylose content reached 18.0% when 128.9 kg of nitrogen fertilizer was applied per hectare. Protein and amylose contents were also curvilineal correlated with crop density. The highest protein content reached 8.2% when crop density was 16.8 cluster/m2, whereas the highest amylose content reached 18.2% when crop density was 16.3 cluster/m2.