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Cultivation method for effectively reducing content of hydrocyanic acid in cassava tubers

A technology of root hydrocyanic acid and cultivation method, which is applied in the cultivation field of effectively reducing the content of hydrocyanic acid in cassava tubers, can solve problems such as hidden dangers of transgenic safety, difficulty in cassava varieties, and complexity, so as to improve the utilization rate of resources and improve the soil plough layer. Effects of Thickness and Physical Space on Crop Root Growth

Pending Publication Date: 2021-06-08
GUANGXI ZHUANG AUTONOMOUS REGION ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because cassava varieties generally have potential hydrocyanic acid content, it is relatively difficult to breed low-toxic cassava varieties through traditional breeding methods; although decyanation through genetic engineering technology has high efficiency and low nutritional loss, there are safety hazards in transgenic; and The processing method decyanation needs to involve a relatively complicated process

Method used

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  • Cultivation method for effectively reducing content of hydrocyanic acid in cassava tubers
  • Cultivation method for effectively reducing content of hydrocyanic acid in cassava tubers

Examples

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Effect test

Embodiment 1

[0025] The powder ridge farming method is adopted, the size of the powder ridge is 30cm deep, the surface of the ridge on the ground is trapezoidal, the width of the top ridge is 50cm, the width of the bottom ridge is 70cm, and the distance between the ridges is 100cm. The base fertilizer is applied with nitrogen, phosphorus and potassium fertilizers. Sow in late March, and insert cassava seed stems obliquely into the furrows. surface, the spacing between plants and rows is 1m×1m; other management is carried out as usual;

[0026] Among the nitrogen, phosphorus and potassium fertilizers, N, P 2 o 5 、K 2 The application ratio of 0 is 0:1:2, N, P 2 o 5 、K 2 The application rate of 0 is 0kg / 70m respectively 2 、0.62kg / 70m 2 、1.31kg / 70m 2 .

Embodiment 2

[0028] The powder ridge farming method is adopted, the size of the powder ridge is 40cm deep, the surface of the ridge on the ground is trapezoidal, the width of the top ridge is 50cm, the width of the bottom ridge is 70cm, and the distance between the ridges is 100cm. The base fertilizer is applied with nitrogen, phosphorus and potassium fertilizers. Sow in late March, and insert cassava seed stems obliquely into the furrows. surface, the spacing between plants and rows is 1m×1m; other management is carried out as usual;

[0029] Among the nitrogen, phosphorus and potassium fertilizers, N, P 2 o 5 、K 2 The application ratio of 0 is 4:1:2, N, P 2 o 5 、K 2 The application rate of 0 is 0.83kg / 70m 2 、0.21kg / 70m 2 、0.42kg / 70m 2 .

Embodiment 3

[0031] The powder ridge cultivation method is adopted, the depth of the powder ridge is 35cm, the surface of the ridge on the ground is trapezoidal, the width of the top ridge is 50cm, the width of the bottom ridge is 70cm, and the distance between the ridges is 100cm. The base fertilizer is applied with nitrogen, phosphorus and potassium fertilizers. Sow in late March, and insert cassava seed stems obliquely into the furrows. surface, the spacing between plants and rows is 1m×1m; other management is carried out as usual;

[0032] Among the nitrogen, phosphorus and potassium fertilizers, N, P 2 o 5 、K 2 The application ratio of 0 is 4:1:2, N, P 2 o 5 、K 2 The application rate of 0 is 1.66kg / 70m 2 、0.42kg / 70m 2 、0.84kg / 70m 2 .

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Abstract

The invention belongs to the technical field of crop cultivation, and particularly relates to a cultivation method for effectively reducing the content of hydrocyanic acid in cassava tubers. The method comprises the following steps of (1), carrying out cultivation, wherein a smash-ridging technology is adopted; (2), applying base fertilizer, wherein when nitrogen phosphorus potassium fertilizer is not applied or the nitrogen phosphorus potassium fertilizer is applied, the application ratio of N, P2O5 to K20 in the nitrogen phosphorus potassium fertilizer is controlled to be (0-4): 1:2; and (3), carrying out sowing, wherein cassava seed stems are obliquely inserted into a ridge surface; and carrying out other management conventionally. According to the method, the content of the hydrocyanic acid in the cassava tubers is reduced through the nitrogen-reducing cultivation method using the smash-ridging technology, and the method is simple and easy to implement and has remarkable economic benefits and social benefits.

Description

technical field [0001] The invention belongs to the technical field of crop cultivation, and in particular relates to a cultivation method for effectively reducing the hydrocyanic acid content of cassava tubers. Background technique [0002] Cassava, Euphorbiaceae Cassava, is the third largest potato crop in the world and the most important food crop in developing countries. However, cassava is a typical cyanogenic plant, and cyanogenic glucoside is a kind of endogenous toxic and harmful components in cassava, which limits the edible or processing quality of cassava and affects the development of cassava edible industry. Therefore, cyanogenic glycosides are one of the most critical safety indicators for cassava products. The risk assessment of the Joint Expert Committee on Food Additives (JECFA) showed that the chronic food safety risks of cyanogenic glycosides mainly come from cassava, and effective measures need to be taken to reduce the content of cyanogenic glycosides i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G22/25A01C21/00A01B79/02
CPCA01G22/25A01B79/02A01C21/005
Inventor 李艳英申章佑黄渝岚劳承英周佳周灵芝韦本辉
Owner GUANGXI ZHUANG AUTONOMOUS REGION ACAD OF AGRI SCI