A composite fiber and its application in rice insect-proof net

Abstract

The invention discloses a composite fiber and its application. The composite fiber of the invention comprises a fiber matrix material and chitosan particles with a particle size of 1-5 μm; the weight percentage of the chitosan particles in the composite fiber is 1-5 μm. 10wt%; the chitosan particles are composed of chitosan, copper stearate and europium ions with a mass ratio of 1-2:0.1-0.5:0.02-0.05. The insect-proof net of the present invention has a very good barrier effect on insects. Adding an emulsifier to prevent rice planthoppers into the fiber can ensure the preventive effect of the insect-proof net on rice planthoppers for a long time. In addition, the red spectrum enhancer of the present invention It can well promote the growth of rice.

Description

Technical field [0001] The present invention relates to a fiber and its applications, and more particularly to an insectic fiber and an application in a paddy anti-insect network. Background technique [0002] Rice applied anti-insects and semacles, which effectively blocks rice planthoppers invasion of the pestaining, and can do not need to use drug prevention during isolation, reduce chemical pesticides to environmental pollution. It is an effective way to prevent pests of water. "The application of the anti-insect network in rice production" pointed out that the anti-insect net is 99% of the anti-sewing anti-insect effect, significantly improve the high and tiller number of seedlings. However, the anti-insect network cannot completely prevent the main pests of rice, such as fly-flying, white flying lite. [0003] In addition, studies have shown that the red light in rice growing, such as "the effect of different spectral energy distribution on rice seedlings", the current impa...

AI Technical Summary

Problems solved by technology

However, the insect-proof net cannot completely eliminate the main pests of rice such as SBPH and white planthopper

[0003] In addition, studies have shown that rice prefers red light during the growth process. For example, in "The Effect of Different Spectral Energy Distributions on the Growth of Rice Seedlings", the impact of different spectra and composite spectra on rice production is studied. At present, rice insect-proof nets are usually white insect-proof net, the white insect net does not enhance the red spectrum that passes through the insect net

For example, the use of rare earth elements to prepare red intensifying mirrors, such as Chinese patent 2017104871880, provides a hydrogel that can emit red fluorescence using rare earth europium ions, but this method directly boils rare earth europium ions with modified chitosan. When used in fibers, it is easy to cause uneven distribution of rare earth ions, which affects its use effect