Sweet potato cultivation method using whole-course chemical control

Abstract

The invention relates to a sweet potato cultivation method using whole-course chemical control and belongs to the technical field of sweet potato cultivation. The method includes: soaking sweet potato seedlings in liquor of routing powder No.5 before planting, and using specific water quantity in hole watering; spraying uniconazole solution twice 35-60 days after planting; and spraying DA-6 solution twice 30-40 days before harvesting. Early root promotion, fast growth mid-control and later-period aging delaying embody the concept of chemical control for the whole growth course of sweet potato. The method has the advantages that the yield of sweet potato cultivated by the method is increased by 16%, and the quality (size and uniformity) is improved evidently; the cultivation method has few steps and requires little labor; the consumption of various plant grow regulators is low.

Description

technical field [0001] The invention relates to a whole-process chemically controlled cultivation method of sweet potatoes, belonging to the technical field of sweet potato cultivation. Background technique [0002] Sweet potato has high yield, stable yield and wide adaptability. It is the fourth largest food crop in China and an important raw material for food processing. Its output accounts for more than 80% of the world's total output. In the potato area in northern my country, the following problems generally exist in sweet potato cultivation technology: 1. After the wheat harvest ends, from the end of May to the beginning of June, summer potatoes begin to be planted, often encountering drought problems. Sweet potato seedlings are tender tissues, which are easy to wither after being subjected to drought stress, and the formation of adventitious roots is hindered. 2. From July to August, with the continuous improvement of sweet potato fertilization conditions and the inc...

AI Technical Summary

Problems solved by technology

In the potato area in northern my country, the following problems generally exist in sweet potato cultivation technology: 1. After the wheat harvest ends, from the end of May to the beginning of June, summer potatoes begin to be planted, often encountering drought problems

2. From July to August, with the continuous improvement of sweet potato fertilization conditions and the increase of rainfall, there has been a phenomenon of vigorous growth of aboveground parts and a decrease in yield

3. In the later stage of sweet potato growth, that is, before harvesting in October, due to the influence of the physiological characteristics of the variety and the climate, the aging of sweet potato in the later stage of growth is accelerated, the accumulation of dry matter is limited, and the transfer efficiency of photosynthetic compounds is reduced

However, in the sweet potato cultivation method disclosed in this patent, the foliar fertilizer sprayed at the early stage of sweet potato growth and the late growth period all contain a specific ratio of diethylaminoethanol hexanoate (DA-6) and olefin Mebutrazol, its shortcoming is: 1. only carry out chemical regulation for two growth stages of sweet potato but not whole growth process, do not consider the chemical regulation need of taking root when potato seedling is planted; 2 its effect is only to improve the sweet potato Yield, did not improve the commerciality of sweet potatoes - the uniformity of skin, potato shape, and size

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