论文部分内容阅读
单一稀土元素和混合稀土对棉花的效应主要是: 1、稀土处理与对照相比均提高了棉株稀土含量,但不同稀土处理之间,前期差异不显著,此期棉株中稀土50——80%来自于根系所吸收的土壤稀土,20—50%来自于浸种供给的稀土。花铃期喷施稀土显著提高了棉株稀土含量,且不同稀土元素处理之间差异也极显著。2、大部分稀土处理与对照比,均表现出不同程度的增产,但L.S.D测验结果表明,只有混合稀土和铥达到接近5%显著水平,分别增产9.6和8.2%。3、盛花期测定棉株稀土含量呈较显著的正相关(接近R=0.05水平)、稀土含量与钾呈极显著负相关(R=-0.68),而钾与产量呈α=0.10水平负相关(r=-0.42),因此稀土可能主要是通过控制体内钾含量来提高产量的。4、稀土对棉花纤维品质有提高的趋势。
The effects of a single rare earth element and mixed rare earth on cotton are mainly as follows: 1, Compared with the control, the rare earth treatment increased the rare earth content of the cotton plant, but the difference was not significant between the different rare earth treatment, 80% comes from the rare earths absorbed by the root system and 20-50% from the rare earths soaked with seeds. The spraying of rare earth in the flower-boll stage significantly increased the rare earth content of cotton plants, and the difference between the treatments of different rare earth elements was also significant. 2, most of the rare earth treatment and control, showed different levels of yield, but the L.S.D test results show that only the mixed rare earth and 铥 reached a significant level of nearly 5%, an increase of 9.6 and 8.2%. (P <0.05). There was a significant positive correlation (P <0.05) between rare earth contents of cotton plants at full bloom and significant negative correlation (R = -0.68) with K (r = -0.42), so the rare earths may increase the yield mainly by controlling the potassium content in the body. 4, Rare-earth cotton fiber quality has increased the trend.