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本研究利用高钙天然配方米品种云光109(钙含量为166 mg/kg),采用精确定量栽培技术、不同施氮量(纯氮B0=0 kg/hm2、B1=180 kg/hm2、B2=210 kg/hm2、B3=240 kg/hm2、B4=270 kg/hm2、B5=300 kg/hm2)与磷肥运筹(A1:磷肥作基肥一次性施入、A2:磷肥作基肥和促花肥分2次等比例施入)相结合,研究对云光109品质及品质构成因素的影响。结果表明,云光109粘糯比值不受氮肥施用量和磷肥运筹的影响,其值均约为3∶1,说明粘糯比是由遗传决定的。另外,对云光109整精米的长、宽和长宽比值没有显著影响。在磷肥作基肥和促花肥分2次等比例施入时云光109的钙含量(B4时最高,为198.7 mg/kg)都显著高于磷肥作基肥一次性施入(B0时最低,为95.31 mg/kg)和普通稻米的钙含量(70～90 mg/kg)。因此,可以通过磷肥作基肥和促花肥分2次等比例施入来提高籽粒钙含量。
In this study, Yun-109 (calcium content of 166 mg / kg), a high-calcium natural rice variety, was used in this study. = 210 kg / hm2, B3 = 240 kg / hm2, B4 = 270 kg / hm2, B5 = 300 kg / hm2) and phosphate fertilizer application 2 times the proportion of application) combined to study the quality of cloud light 109 and quality factors. The results showed that the ratio of stickiness and glutinousness of Yun-Guang 109 was not affected by the amount of nitrogen fertilizer applied and the P fertilizer application. The value was about 3: 1, indicating that the sticky waxy ratio was determined by inheritance. In addition, there is no significant effect on the length, breadth and aspect ratio of Yunjing 109 whole polished rice. When the phosphate fertilizer was applied in two equal proportions, the content of calcium (the highest at B4, 198.7 mg / kg) was significantly higher than that of phosphate fertilizer (basal fertilizer was the lowest at B0, 95.31 mg / kg) and ordinary rice (70-90 mg / kg). Therefore, phosphorus fertilizer can be used as basal fertilizer and fertilizer points 2 times the proportion of the same to improve the grain calcium content.