Method for preventing and controlling rice grubs by breeding soft-shelled turtle in rice field

Abstract

The invention provides a method for preventing and controlling rice grubs by breeding soft-shelled turtle in a rice field, comprising the following steps of: (1) breeding strong rice seedlings, and transplanting the rice seedlings to large field; (2) digging deep ditches at the periphery and the middle part of the rice field; (3) setting habitats for the soft-shelled turtle at the middle part of the rice field and at the two sides of the rice field; (4) mounting escaping (stealing)-preventing facilities; (5) selecting young soft-shelled turtles; and (6) determining breeding time and density of soft-shelled turtle and disinfecting the young soft-shelled turtles, wherein Chinese soft-shelled turtle can be bred two days after rice is transplanted, and 30-50 Chinese soft-shelled turtles with the weight of 250-300g can be bred every 667 square meters. By adopting the method provided by the invention, quantity of spiders in the rice field can be improved, the quantity of rice plant hoppers can be reduced, ratio of the spiders to the rice plant hoppers is improved by 45.23%, damage of the rice plant hoppers is obviously reduced, control effect on cnaphalocrocis medinalis is 38.89%, and dead heart rate caused by damage of borers (chilo suppressalis and sesamia inferens) is reduced by 25% compared with that of the rice field in which the soft-shelled turtles are not bred.

Description

technical field [0001] The invention belongs to the field of biological control of rice pests, and in particular relates to a method for controlling rice pests by raising soft-shelled turtles in paddy fields. Background technique [0002] Rice is the main food crop in my country, and rice pests are an important factor affecting the stable, high yield and high quality of rice. At present, there are more than 250 kinds of rice pests recorded in our country, among which rice planthoppers (BPH, SBPH, SBPH), rice leaf rollers and stem borers (C. , large borer) and so on. In order to increase the yield of rice, people take various control measures against pests, mainly including plant quarantine, agricultural control, physical control, biological control and chemical control. Among them, biological control is highly selective, safe for humans, animals, beneficial organisms and crops, does not pollute the environment, and has the advantages of long-term inhibition of pests. Ther...

AI Technical Summary

Problems solved by technology

Although Zhao Linbin (2007) and Zhao Biao (2007) reported some techniques for raising soft-shelled turtles in paddy fields, the technology is relatively simple and does not involve technical measures that are compatible with rice growth management, nor does it involve the use of soft-shelled turtles in paddy fields for the prevention and control of rice pests. The role and specific methods

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