A kind of scallion nutrient precision management method
A management method and nutrient technology, applied in the field of agricultural cultivation, can solve problems such as single fertilization, achieve the effects of improving yield and quality, strong operability, and increasing farmers' income
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[0067] A method for precise management of scallions nutrients, comprising the following steps:
[0068] 1) Determination of yield response coefficient of scallion: The yield response coefficient of scallion on soil with different basic nutrient supply levels is as follows:
[0069]
[0070] Soil basic nutrient supply grades are divided into three grades: high, medium and low, and the grades are determined according to soil characteristics and history of organic fertilizer application.
[0071] The soil nitrogen nutrient supply level is judged according to the soil characteristics as follows:
[0072] Low: sandy soil (regardless of soil color) or reddish / yellowish loam or clay;
[0073] Medium: gray / brown loam or clay;
[0074] High: High organic matter content and black loam or clay;
[0075] The high organic matter content refers to the soil organic matter content>15g / kg; if a large amount of organic fertilizer is applied (2t / ha or more poultry manure is applied every s...
experiment example 1
[0101] Experimental Example 1: Field Test Verification
[0102] The test was carried out in Zaoyuan Town, Zhangqiu District, Jinan City, Shandong Province from June to November 2017, and the test sites were located in Qingyuan Village and Wanxin Village. Before the scallions are planted, the planting situation of each test site plot is investigated, and the target yield and soil basic nutrient supply level are determined according to the investigation results, and the output response and nitrogen are calculated by the scallion nutrient precision management method (NE) of the embodiment of the present invention 1. The amount of phosphorus and potassium nutrients (see Table 1), and the local soil testing formula fertilization (OPTS) and farmers' practice (FP) treatments were set as controls. A total of 3 treatments, the area of the plot is 100m 2 Above, without repetition, each fertilization treatment scheme is shown in Table 1 below:
[0103] Table 1 Fertilization schemes o...
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