Bacillus thuringiensismushonga wezvipembenene une chepfu shoma. Unonyanya kugadzira mhando mbiri dzechepfu, dzinoti endotoxins (crystal inclusions) uye exotoxins, izvo zvinoita kuti zvipembenene zvirege kudya uye pakupedzisira zvinofa nenzara, kuora kweropa uye kukuvadzwa nepfungwa.
Maitiro ekuuraya zvipembenene
Mushure meBacillus thuringiensisKana zvipembenene zvamedzwa nezvipembenene, zvinoparadzira mukati medumbu remhuka. Munzvimbo yakakodzera yealkaline mudumbu, zvinokura uye zvinoberekana. Uturu hwekristaro hunonyungudutswa neproteases mudumbu rezvipembenene, zvichiita zvidimbu zvidiki zvine chepfu. Zvikamu izvi zvinoshanda pamasero emudumbu ezvipembenene, zvichikonzera kuoma kwedumbu, kubooka, kuoma kwemuviri wezvipembenene, uye kumira kudya. Zvadaro, Bacillus thuringiensis inopinda muropa kuti ibereke, zvichikonzera septicemia uye zvichikonzera kufa kwezvipembenene.
Zvakanakira zveBacillus thuringiensis:
(1) Maitiro ekugadzira anoenderana nezvinodiwa zvekuchengetedza nharaunda. Mushure mekupfapfaidza mushonga wezvipembenene, panenge pasisina zvakawanda zvasara mumunda.
(2) Mutengo wekugadzira wakaderera. Zvinhu zvayo zviripo zvakawanda uye zvese zviri zvekurima uye zvekunze, nemitengo yakaderera.
(3) Chigadzirwa ichi chine mhando dzakasiyana-siyana dzekuuraya zvipembenene. Chine chepfu kumarudzi anopfuura mazana maviri ezvipembenene zve lepidopteran.
(4) Kugara uchishandisa zvipembenene kuchakonzera dambudziko guru, zvichikonzera kupararira kwembeu dzezvipembenene, zvichizadzisa chinangwa chekudzora huwandu hwezvipembenene nenzira yechisikigo.
(5) Haina kusvibiswa kwezvakatipoteredza uye manyuko emvura, haina njodzi kuvanhu nezvipfuyo, uye yakachengeteka kuzvipembenene zvakawanda zvevavengi.
(6) Inogona kusanganiswa uye kushandiswa ipapo ipapo pamwe chete nezvimwe zvinhu zvakasiyana-siyana zvehupenyu, zvinodzora kukura kwezvipembenene, chepfu yepyrethroid spirochete, carbamate, mishonga yezvipembenene inonzi organophosphorus, uye mimwe mishonga yefungicide nefetereza yemakemikari.
(7) Kuchinjana kushandiswa kwemishonga yekuuraya zvipembenene nemishonga yekuuraya zvipembenene kunogona kuwedzera simba rezvipembenene pakurwisa mishonga yekuuraya zvipembenene.
Mirayiridzo yekushandisa
Dzora zvipembenene zvinodya mashizha zvakaita semakonye ejujube, jujube moth, chepfu moth, uye prickly moth. Pfapfaidza Bt emulsion nehuwandu hwe500-600 panguva yekutanga kwekukura kwemakonye. Nzira iyi inopa mhedzisiro yakanaka mukudzora zvipembenene nekudzivirira mashizha.
Dzora jujube ne apple codling moth, pamwe ne pear codling moth. Munguva yekubereka mazai echipfukuto chikuru uye nguva yekudya michero yechipfukuto, pfapfaidza Bt emulsion (ine 0.2% synthetic pyrethroid) nehuwandu hwe500-600 chipfukuto chisati charwisa muchero. Nzira iyi inopa mhedzisiro yakanaka mukuuraya zvipembenene nekudzivirira michero.
Zvekungwaririra
① Hazvigone kusanganiswa nemishonga inouraya utachiona.
② Nzvimbo inochengeterwa makonye esilika inofanira kudzivirira kuishandisa zvakanyanya kudzivirira chepfu yekonye esilika.
③ Bacillus thuringiensis inoshanda zvakanaka kana tembiricha yakakwira (inopfuura 20℃). Zvinokurudzirwa kuishandisa kubva muna Chikumi kusvika Gunyana.
④ Mushonga uyu unowanzo torwa hunyoro uye unogadzira mapundu. Unofanira kuchengetwa munzvimbo yakavharwa, yakaoma uye inotonhorera.
Nguva yekutumira: Kukadzi-27-2026