Method for determining surplus and deficiency of mineral elements of Chinese chestnut leaves
A technology of mineral elements and chestnut, applied in the field of determining the abundance and deficiency of mineral elements in chestnut leaves
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Embodiment 1
[0055] 1. Determine the content of mineral elements in chestnut leaves
[0056] 1.1 Selection of representative chestnut gardens
[0057] With the assistance of local chestnut technicians and chestnut farmers, the inventor conducted a comprehensive investigation on the agro-ecological background and production status of Yanshan Zaofeng in Qianxi County in recent years. The investigation mainly included site conditions, cultivation management level, etc. On the basis of comprehensive consideration of various survey factors, 23 representative chestnut orchards in each township of the county were selected as sampling points for the experiment, and a schematic diagram of the site distribution of the selected representative chestnut orchards was prepared by using the GPS positioning method (see figure 2 ). At the same time, the inventor also recorded the coordinates, altitude, soil type, etc. of the sample plot in detail, so as to prepare for the follow-up work.
[0058] 1.2 Coll...
Embodiment 2
[0098] This embodiment takes figure 2 Take No. 13 Liyuan (low-yielding group) as an example, and reversely verify the accuracy of the index grading standards for each element in Table 4 obtained in Example 1, as follows:
[0099] First of all, it can be seen from Table 3 that the DRIS index of each element in the leaves of No. 13 Liyuan Yanshan Zaofeng Chestnut in the low-yield group are: N: 6.210, P: 1.011, K: -6.910, Ca: 9.368, Mg: 13.127, Fe: 16.549, Mn: -22.381, Cu: 0.097, B: -17.070.
[0100] Then, the DRIS index of each element in the leaves of Liyuan No. 13 Liyuan Yanshan Zaofeng chestnut in the low-yielding group was calculated. Compare the index ranges of the five levels of severe deficiency, mild deficiency, suitable, slight excess and severe excess of each element shown in Table 4. As a result, it can be judged that the leaves of Yanshan Zaofeng Chinese chestnut in this chestnut garden belong to the appropriate range of P and Cu, K, Mn, and B are severely deficien...
Embodiment 3
[0104] This embodiment takes figure 2 The No. 5 chestnut garden (high-yield group) shown as an example, the yield model of the chestnut garden Yanshan Zaofeng foliar spraying trace elements Mn, Fe, B was obtained by using the second general rotation combination design, and the influence of these three factors on chestnut The order of influence of yield, and it is compared with the fertilizer-required order of this Chinese chestnut garden that adopts blade DRIS method to draw in embodiment 1, so that verify the accuracy of the index grading standard in the table 4 that embodiment 1 obtains, specifically as follows:
[0105] 1 Materials and methods
[0106] 1.1 Overview of the test site
[0107] The experiment was carried out in the Chestnut Demonstration Base in Hanerzhuang Township, Qianxi County, Hebei Province (ie figure 2 No. 5 chestnut garden shown), the soil texture of the chestnut garden is sandy loam. The test material is the 12-year-old "Yanshan Zaofeng", the main l...
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