【摘要】 本实验采集了34个猕猴桃园叶样,并根据产量将亩产≥1000kg的17个园子划为高产组,亩产<1000kg的17个园划分低产组。对叶片中N、P、K、Mn、Cu、Zn6种元素含量进行测定和统计分析。结果表明:低产组大量元素需肥强度最大的主要为N,占该组的52.94%,微量元素需肥强度最大的以Zn和Cu为多,分别占该组的47.06%、41.18%;制定出猕猴桃园N、P、K、Mn、Cu、Zn的DRIS指数分级标准,其适宜指数范围分别为-4.003～5.202,4.002～4.922,4.993～6.465,9.733～7.675,1.621～1.332,5.317～3.998;各园的需肥顺序用图示法和用指数法判断,其结果一致。更多还原

【Abstract】 The foliar samples were respectively collected from 34 kiwifruit orchards among which 17 orchards were classified as the high yielding group with an output of more than 1 500 kg·ha1, and the other 17 ones as the low yielding group with an output of less than 1 500 kg·ha1. The concentration of six kinds of mineral elements including N, P, K, Mn, Cu and Zn in foliar samples were determined and statistically analyzed. The results showed that the maximally required nutrients in the low yielding group are N as macroelement and Zn and Cu as microelements, respectively accounting for 52.94%, 47.06% and 41.18% in their group. So the DRIS exponent classification norms of the kiwifruit orchards were laid down, and the suitable exponent for N, P, K, Cu, Mn, Zn ranges were -4.003～5.202, -4.002～4.922, -4.993～6.465, -9.733～7.675, -1.621～1.332 and -5.317～3.998 respectively. And the sequence of fertilizer requirement strength judged by the scheme method and exponent method were consistent with each other.更多还原