Density-regulating nitrogen-controlling synergistic cultivation method for black sesame in southern red soil dryland

Abstract

A density-regulating nitrogen-controlling synergistic cultivation method for black sesame in southern red soil dryland is disclosed. The method includes the following key steps: (1) selection of a planting mode: for rotation of rapeseed, selecting a planting mode that the density is 225000 and T2 (30-45-30-45-30, unit: cm, the same below) and T4 (32.5-32.5-50-32.5-32.5) are taken as plant spacing,if mechanized sowing is adopted, selecting a T2 mode; for rotation of soybean or late sowing of sesame seeds, in late June or mid-July, selecting a mode that the density is 375000 plants/hm<2>; and (2) selection of fertilizer usage amount and operation mode: applying the following fertilizers: 75 kg/hm<2> of nitrogen fertilizer (N), 37.5 kg/hm<2> of phosphate fertilizer (P2O5), 75 kg/hm<2> of potassium fertilizer (K2O), and 15.0 kg/hm<2> of phosphate fertilizer borax. The method disclosed by the invention has the characteristics of low investment, high benefit and simple operation, and can significantly improve the yield and planting efficiency of continuously cropped sesame.

Description

Technical field: [0001] The patent of the present invention relates to a method for cultivating black sesame seeds in southern red soil upland by adjusting density, controlling nitrogen and increasing efficiency, and belongs to the technical field of high-yield cultivation of crops. Background technique: [0002] Sesame is a special oil crop in my country with a long history of planting. Sesame oil not only has high nutritional value (oil content is about 54%), but also contains a variety of antioxidant substances (sesamin and sesamolin, both collectively known as sesamol) in the seeds, so it has obvious health care effects . In 2016, the national planting area of ​​sesame was 400,100 hectares, of which the planting area of ​​sesame in Jiangxi Province was 31,200 hectares; the planting area of ​​black sesame in Jiangxi accounted for more than 70% of the total area of ​​the province, mainly distributed in Jinxian, Poyang, Duchang, Dongxiang, Yugan, Yujiang, Xingan and other...

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Problems solved by technology

[0004] Field planting density is also considered to be one of the key factors affecting the yield of sesa

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