| 摘要: |
| 以自制羟丙基甲基纤维素含硼高吸水性树脂为试验材料，通过油菜育苗试验，采用单因素和正交试验方法，探究不同添加量下，含硼高吸水性树脂是否可以有效改善育苗基质理化性质、提高保水性能和促进油菜幼苗的生长。结果表明:随着含硼高吸水性树脂添加量的增加，各处理组的基质容重逐渐减小、总孔隙度和持水孔隙度逐渐增大、通气孔隙度先增大后减小、pH逐渐增大、EC值逐渐增大、有效硼含量逐渐升高；同时，随着育苗时间的延长，不同处理组基质相对含水率与含硼高吸水性树脂添加量呈正相关关系。因此，在适宜添加量范围内，含硼高吸水性树脂施用量的增加，能够促进油菜幼苗生长，而当施用量过大时将阻碍油菜幼苗正常生长。含硼高吸水性树脂适宜添加量范围为育苗基质质量的0.3%左右。 |
| 关键词: 油菜幼苗 含硼高吸水性树脂 硼缓释性能 基质理化性质 |
| DOI：10.11841/j.issn.1007-4333.2020.07.05 |
| 投稿时间：2020-01-01 |
| 基金项目:公益性行业(农业)科研专项(201503137) |
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| Effect of boron sustained-release superabsorbent resin on the growth and development of rapeseed seedlings |
|
LI Xueyuan,WANG Yuxin,WANG Pingzhi,FENG Ling
|
| (College of Water Conservancy & Civil Engineering, China Agricultural University, Beijing 100083, China) |
| Abstract: |
| The self-made hydroxypropyl methyl cellulose boron-containing superabsorbent resin was used as test material. Through rapeseed seedling test, single factor and orthogonal test methods were used to investigate whether boron-containing super absorbent resin could improve the physical and chemical properties of seedling substrates and water retention and promote the growth of rapeseed seedlings. The results showed that the boron-containing superabsorbent resin changed the physicochemical properties of the substrate. With the increase of boron-containing superabsorbent resin, the bulk density of matrix decreased gradually, the total porosity and water-holding porosity increased gradually, the aeration porosity increased first and then decreased, pH, EC value and the effective boron content increased gradually. At the same time, with the extension of seedling time, there was a positive correlation between the relative water content of different treatment groups and the amount of boron containing superabsorbent resin. Therefore, within the appropriate range, the increase of the application amount of boron containing superabsorbent resin promoted the growth of rapeseed seedlings, but when the application amount was too large, it would hinder the normal growth of rapeseed seedlings. The suitable amount range of boron-containing superabsorbent resin was about 0. 3% of the mass of seedling substrate. |
| Key words: rapeseed seedling boron-containing superabsorbent resin boron slow-release property physicochemical properties of substrate |
