土壤理化性状与猕猴桃树势相关性研究

以同一个果园的猕猴桃品种"米良一号"为试材,分析猕猴桃树势、叶片营养状况与土壤理化性状的相互关系,结果显示:在土壤全氮、有效磷和速效钾含量在3级(高)以上的情况下,叶片全氮、全磷和全钾的含量也偏高。土壤中微量元素有效锌、有效铜、有效锰和有效铁在2级(高)以上时,叶片全锌、全铜、全锰和全铁在适宜范围内;当土壤有效硼含量为4级(低)时,叶全硼含量亦偏低。但在土壤交换性钙、镁含量并不缺乏的情况下,猕猴桃叶片的全钙、全镁却处于极低的水平。猕猴桃新梢直径、主干周长与土壤有机质含量、全氮、交换性钙、交换性镁以及有效锌、有效铜、有效锰等均无显著相关性。新梢直径与主干周长呈极显著正相关;与土壤的电导率、有效磷、速效钾、有效硼等呈显著正相关。而主干周长与土壤的有效磷、速效钾、有效硼呈极显著正相关,与土壤有效铁的相关性也达到显著水平。

Correlation between Physicochemical Properties of Soil and Growth of Kiwifruit Trees

In the same orchard with a variety of "Miliang No.1" kiwi as test materials, and analyze the relation between the physicochemical properties of kiwifruit tree vigor, leaf nutrients and soil, the resulted show that: underthe condition of the soil total nitrogen, available phosphorus and available potassium contents in grade three (high), the contents of total nitrogen, total phosphorus and total potassium were also high. When the contents of available Zn, available Cu, available Mn and available Fe in the soil were higher than grade 2 (high), and the total Zn, total Cu, total Mn and total Fe in the suitable range; when the content of available boron in soil was grade 4 (low), the total boron content of leaves was also low. However, when the content of exchangeable calcium and magnesium was not lack in the soil, the total calcium and magnesium of kiwifruit leaves were at a very low level. There was no significant correlation among the diameter of new sprout, the main stem circumference, the content of soil organic matter, total nitrogen, exchangeable calcium, exchangeable magnesium, available zinc, available copperand available manganese.There was a very significant positive correlation between the diameter of new sprout and the circumference of the main stem; the new sprout also had significant positive correlation with soil conductivity, available P, available K and available boron.There was a significant positive correlation between the main stem circumference and available phosphorus, available potassium and available boron, and the correlation of soil available iron was also significant.