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红花、牛蒡均是常用的中药材,各地多有栽培。但产量较低而不稳定,蚜虫的为害,是影响产量的主要原因之一。从红花、牛蒡苗期起整个生长期都出现蚜虫的危害。蚜虫可行孤雌胎生,繁殖系数高,周期短,在适宜的温湿度条件下,6—7天即可繁殖一代。一般常用乐果来防治蚜虫。每隔7—10天就得喷一次药,每年需喷多次,现在由于长期使用乐果,蚜虫已对其产生了一定的抗药性,因此用药量、浓度愈来愈大。为选高效、低毒、残留量小,而药效期长的药剂,我们于1980年采用3%呋喃丹颗粒剂进行防治红花、牛蒡蚜虫的试验,效果显著,现将结果简报如下:
Safflower, burdock are commonly used in traditional Chinese medicine, many cultivated around. However, low yield and instability, aphid damage, is one of the main factors affecting the yield. From safflower, burdock seedling stage of the emergence of aphids throughout the growing harm. Aphids viable parthenogenesis, reproductive coefficient, short cycle, under the conditions of appropriate temperature and humidity, 6-7 days to breed a generation. Commonly used dimethoate to control aphids. Every 7-10 days have to spray a drug, need to spray many times each year, now because of the long-term use of dimethoate, aphids have some resistance to it, so the dosage, the concentration is getting bigger and bigger. For the selection of high efficiency, low toxicity, small residues, and long-term efficacy of the agent, we used 3% carbofuran in 1980 for the prevention and control of safflower, burdock aphid test, the effect is remarkable, the results are summarized as follows: