A screening method for special ducks for rice-duck co-cropping

Abstract

The invention discloses a screening method for rice-duck special-purpose ducks, which comprises the following steps of measuring the zero-day-old water resistance time of rice-ducks on a large scale (x 1 ), survival rate during brooding period (x 2 ), field work time (x 3 ), listed weight (x 4 ) and field recovery (x 5 ), using the principal component analysis method to carry out multi-index comprehensive evaluation and weight coefficient determination on the above five traits, and establish a principal component comprehensive evaluation model Y=Azx 1 +Bzx 2 +Czx 3 -Dzx 4 +Ezx 5 ;Collect different duck varieties to be evaluated, and actually investigate the zero-day-old water resistance time, survival rate during the brooding period, field work time, market weight and field recovery rate in rice-duck co-culture, and calculate the comprehensive field work scores of different duck varieties through the above formula , and sorted according to the comprehensive score to determine the suitable duck breeds for rice-duck co-production. Compared with the prior art, the method of the invention effectively solves the technical problem that it is difficult to ensure the field work effect of the rice field duck, and the selected rice duck can significantly increase the yield of organic rice by cooperating with the rice field, and the effect is obvious.

Description

technical field [0001] The invention relates to a method for screening special ducks for rice-duck co-culture, and belongs to the technical field of rice-duck screening. Background technique [0002] Rice-duck co-cultivation is to use the strong omnivorous nature of ducks to eat weeds and pests in the rice fields, and use the uninterrupted activities of ducks to achieve weeding, stimulate the growth of rice, and produce the effect of intercultivation in muddy water, so as to realize the production of pollution-free, green, and A kind of planting compound and ecological comprehensive agricultural technology of organic rice and duck meat. However, the meat performance and field work effect of different duck breeds are quite different. Some duck breeds have better meat performance, but the field work effect is poor, and some duck breeds are the opposite. The reports at home and abroad are relatively vague. It is only a suggestion The use of some breeds, such as ducks for use (...

AI Technical Summary

Problems solved by technology

However, the meat performance and field work effect of different duck breeds are quite different. Some duck breeds have better meat performance, but the field work effect is poor, and some duck breeds are the opposite. The reports at home and abroad are relatively vague. It is only a suggestion The use of some breeds, such as ducks for use (domestic duck x mallard), has brought certain difficulties to the selection of duck species for rice-duck co-culture and the promotion of this technology. The key lies in the lack of a set of scientific options for rice-duck co-culture. dedicated duck method

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