新疆莎车县扁桃花营养元素浓度标准范围的确定

Determination of standard concentration ranges of nutrient elements in almond flowers in Shache County of Xinjiang

为给莎车扁桃的优质丰产提供施肥需求的科学依据,通过测定分析莎车县19个乡镇102个扁桃花样的5种常量元素(N、P、K、Ca、Mg)和5种微量元素(B、Zn、Fe、Mn、Cu)的质量浓度,确定新疆莎车县扁桃花营养元素标准值范围。结果表明:N、P、K、Ca、Mg、B、Mn等7种元素的取值遵从正态分布,而Zn、Fe、Cu取值近似正态分布;采用4点5分段的概率分级法,使1~5级分别对应花营养元素质量浓度标准值中的缺乏、低值、正常值、高值、过高5个数值范围,各级出现的花样概率分别为10%、20%、40%、20%和10%,花分析值在(X-0.524 6 S)^(X+0.524 6 S)间可作为标准值中的正常值范围,这与通过高产水平果园花的分析值非常接近;扁桃花中矿质元素质量浓度标准值的正常值范围为:N 27.72~30.04 g/kg、P 3.57~4.06 g/kg、K 23.18~26.11 g/kg、Ca 8.62~10.39 g/kg、Mg 13.95~15.17 g/kg、B 64.43~78.07 mg/kg、Zn 61.43~70.38 mg/kg、Fe 231.01~243.30 mg/kg、Mn 38.34~45.09 mg/kg和Cu 12.81~14.53 mg/kg。

In order to provide a basis of fertilization requirement forifne quality and high yield of almond in Shache County, the mass concentrations of macroelements （N, P, K, Ca and Mg） and microelements （B, Zn, Fe, Mn and Cu） in one hundred almondlfower samples in nineteen villages and towns of Shache County were determined and analyzed, and the standard mass concentration ranges of nutrient elements in almondlfowers in Shache County of Xinjiang was determined. The results indicated that, the values of the elements contents of N, P, K, Ca, Mg, B, and Mn conformed to the normal distribution, but those of Zn, Fe and Cu looked similar normal distribution. Using the method ofifve grades by four dividing points （standardized probability grading SPG method）, the absence, low value, normal value, high value, excess of standard range of nutrient elements, and the occurrence probability of one toifve grades is 10%, 20%, 40%, 20% and 10% respectively. The third grade （occurrence probability was 40% of the total sample）, which valued from（X-0.524 6S） to （X＋0.524 6S）, could be the normal value of standard range, rather same to the analyzed value oflfower nutritional elements in high yield orchards. The normal value range of mineral elements’ standard range in the almond lfowers as follows： N 27.72-30.04 g/kg, P 3.57-4.06 g/kg, K 23.18-26.11 g/kg, Ca 8.62-10.39 g/kg, Ma 13.95-15.17 g/kg, B 64.43-78.07 mg/kg, Zn 61.43-70.38 mg/kg, Fe 231.01-243.30 mg/kg, Mn 38.34-45.09 mg/kg and Cu 12.81-14.53 mg/kg.