Composite fiber, and application thereof in insect-proof net for rice

Abstract

The invention discloses a composite fiber and an application thereof. The composite fiber comprises a fiber matrix material and chitosan particles having a particle diameter of 1-5 [mu]m; the weight percentage of the chitosan particles in the composite fiber is 1-10 wt%; and the chitosan particles are composed of chitosan, copper stearate and europium ions according a mass ratio of (1-2):(0.1-0.5):(0.02-0.05). The insect-proof net has an excellent barrier effect on insects, the addition of emulsifiable granules for preventing rice planthoppers to the fiber can realize long-time ensuring of thepreventive effect of the insect-proof net on the rice planthoppers, and a red spectrum enhancer in the invention can well promote the growth of rice.

Description

technical field [0001] The invention relates to a fiber and its application, in particular to an insect-proof fiber and its application in rice insect-proof nets. Background technique [0002] The application of insect-proof nets to isolate seedlings for rice can not only effectively block rice planthoppers from invading and spreading viruses in seedling fields, but also prevent the use of pesticides during the isolation period, reducing the pollution of chemical pesticides to the environment. It is an effective way to prevent rice diseases and insect pests. "Research on the Application of Insect-proof Nets in Rice Production" pointed out that the anti-insect nets have a 99% anti-insect effect on SBPH, and significantly increase the plant height and tiller number of seedlings. However, insect-proof nets cannot completely eliminate major pests of rice such as SBPH and white planthopper. [0003] In addition, studies have shown that rice prefers red light during the growth p...

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