Biological preventing and controlling strain of continuous cropping cucumber and watermelon blight and microbe organic fertilizer thereof

Abstract

The invention relates to a biological preventing and controlling strain of continuous cropping cucumber and watermelon blight and microbe organic fertilizer thereof, belonging to agriculture intensification production technologies. Trichoderma harzianum SQR-T037 having obvious biological preventing and controlling effect on cucumber and watermelon blight is separated, and the microbe organic fertilizer is prepared from the biological preventing and controlling strain and organic compost; the fertilizer contains more than 1*108 bacterial colony forming units per gram of the strain, the full nitrogen content is 3-5 percent (more than 90 percent is organic nitrogen), the total NPK nutrient content is 6-10 percent, and the organic matter content is 30-35 percent. An experiment indicates that the microbe organic fertilizer leads the biological preventing and controlling strain to be rapidly bred after being applied to the soil and forms a preponderant population in the soil, and the biological preventing and controlling rate of the blight in the soil having serious cucumber and watermelon blight reaches more than 85 percent. By applying the microbe organic fertilizer to the soil without forming continuous cropping obstruction for a long time, the preventing and controlling rate on the cucumber and watermelon blight reaches more than 80 percent.

Description

1. Technical field [0001] The invention relates to a biological control strain of continuous cropping cucumber and watermelon wilt and the microbial organic fertilizer produced therefrom, belonging to the technical field of agricultural intensive production, and is specially used for overcoming and eliminating the problem of continuous cropping cucumber and watermelon wilt. 2. Background technology [0002] Cucumber and watermelon are important economic crops in my country, and their yield and quality are related to the national economy and people's livelihood. Fusarium wilt of cucumber and watermelon is one of the main diseases of cucumber and watermelon, especially in protected areas. Fusarium wilt of cucumber was first reported in Holland in 1943. In 1949, it caused the loss of more than 40% of cucumbers in Florida, USA, and the infection rate of plants in the third season of continuous cropping reached more than 70%. At present, in my country's highly intensive cucumber...

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Problems solved by technology

[0003] On the other hand, the incineration of rice, wheat, corn, rapeseed and other crop straws, and the disposal of livestock and poultry manure after large-scale breeding not only seriously pollute the environment, but also greatly waste the organic fertilizer and bio-organic fertilizer products. Raw materials; a large number of nutrient resources (C, N, P, K, S and trace elements) are lost outside the soil-plant system, which obviously weakens the ability of my country's agricultural sustainable development

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