Resistance induction method of watermelon fusarium oxysporum physiological race 2

Abstract

The invention discloses a resistance induction method of a watermelon fusarium oxysporum physiological race 2. According to the technology, a melatonin mixed solution with a proper concentration is mixed with NaHS for treatment and relieving of watermelon fusarium wilt caused by invasion of the watermelon fusarium oxysporum physiological race 2, wherein the treatment concentration of the melatoninmixed solution is 20-500 micromoles per liter, the treatment concentration of NaHS is 10-250 micromoles per liter, 0.3 L of the melatonin mixed solution is used for being sprayed on leaves of each plant, and 1 L of NaHS is applied to each plant for root irrigation. Melatonin can be easily decomposed by strong light, and therefore treatment is carried out at nightfall. According to the treatment time and frequency, treatment is conducted for the first time in the early stage of outbreak of fusarium wilt in the flowering and fruiting periods of watermelons, treatment is conducted for the secondtime after 5 days, and treatment is conducted for the third time after 12 days. Melatonin is a natural substances existing in plants and free of toxins and pollution, and NaHS releases H2S gas afterdecomposition and is easy to degrade and free of pollution. By mixing melatonin with the proper concentration with NaHS for treatment, the method has the three advantages of preventing watermelon fusarium wilt, promoting plant growth and being environmentally friendly and free of pollution, and is easy to widely use and popularize.

Description

technical field [0001] The invention relates to the technical field of agriculture, in particular to a method for inducing resistance to Physiological Race 2 of Fusarium wilt of watermelon. Background technique [0002] As an important horticultural and agricultural crop in my country, watermelon occupies the first place in the world in its cultivated area. Because the watermelon industry has a short cycle, quick results, and stable benefits, it has developed rapidly in the planting industry and soon became the leading industry in the process of structural adjustment in some regions. According to statistics, watermelon facility cultivation area accounts for about 48%. Due to the highly intensive facility cultivation and farmers’ herd mentality, continuous cultivation throughout the year has resulted in serious continuous cropping obstacles in watermelon cultivation, such as reduced seed germination rate, slow growth, dead seedlings at the seedling stage, yellow leaves, pron...

AI Technical Summary

Problems solved by technology

However, it is unclear which species of Fusarium wilt these control measures specifically target, and they have various limitations, and what is more, they can negatively affect the soil or crops

For example, the screening of disease-resistant varieties takes a long time, grafting affects fruit quality, and chemical control is easy to cause pollution, etc.

And there are few reports on plant resistance induction technology against Fusarium wilt

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