How to control rice electric leafhopper
The scientific name Inazumadorsalis (Motschulsky) synonym and Reciliadorsalis (Motschulsky) belongs to Homoptera, Cicadellidae. It is distributed in the rice areas south of the Yellow River.
Host rice, corn, sorghum, millet, sugarcane, barley, barley, etc. Accidentally harm sesame seeds, oranges, etc.
The characteristics of the damage were that adults and nymphs pricked and sucked juice on rice leaves and leaf sheaths, resulting in inhibition of the growth and development of injured plants, yellowing of leaves or wilting of the whole plant. Spread rice dwarf disease, tumor dwarf disease and so on.
Morphological characteristics the adult is 3-4mm long, light yellow, with light brown markings. There are 2 yellowish brown spots in the middle and front of the crown and 2 small yellowish brown spots in the back. The scutellum is grayish, with a yellowish brown spot at the base angle. The front wing is light grayish yellow, with lightning-like yellowish brown wide stripes, the color around the ribbon is thick, and the characteristics are quite obvious. The ventral surface of the chest and abdomen is yellow-white with dark brown spots. The egg is long 1-1.2mm, oval, slightly curved, initially white, and then yellow. The nymph is 5 years old. The body length of the last instar nymph is 3.5mm, yellow and white. The back of the head, chest, feet and the last 3 segments of the abdomen are brown on the side, 1-6 segments of the abdomen have brown markings on the back, and the wing buds reach the 4th segment of the abdomen.
The living habits are 5 generations in Zhejiang and 6 generations in Sichuan, overwintering with eggs in the dorsal midvein of the host leaves. Taiwan is born more than 10 generations a year, and each insect stage can be seen on an annual basis. The rice area in the middle and lower reaches of the Yangtze River suffered the most from September to November, the eastern part of Sichuan from late August to the first ten days of October, and Taiwan from June to July and October to November. The life span of female is 20 days, and that of male is about 15 days. The number of eggs laid was about 80 in 7 days before spawning. The egg duration is 10-14 days, the nymph duration is 11-14 days, and the nymph duration is about 37 days from October to November.
Control methods (1) see black-tailed leafhopper. (2) it can be used to control black-tailed leafhopper at the same time.
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How to control rice pests
2.5% of the fish rattan cyanide invention patent series products, such as diketone EC, are new botanical pesticides developed to solve the two major problems in China's agricultural production, such as drug-resistant pests and the frequent occurrence of residual pesticide food poisoning. It has won the national invention patent and the Guangdong Provincial Science and Technology Progress Award. The large-scale test and demonstration of plant protection experts in our province showed that 1000 was used to control resistant pests such as rice leaf borer, rice planthopper, Chilo suppressalis, branch shaving worm, Plutella xylostella, red spider, thrips, spiders and scale insects.
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How to Control Rice Grain smut
Symptoms are also known as smut, rice ink smut, Wumigu and so on. Distributed in the Yangtze River Basin and the south of China, it mainly occurs from flowering to milk ripening stage of rice, only injuring grains, one or several grains per panicle or even dozens of grains per panicle, usually showing disease when rice is near maturity. The infected rice grain is dark green or yellow, with black powder in it, the abdomen is split at maturity, showing black powder, there is a black tongue protruding between the inner and outer glumes of the diseased grain, and there is often black liquid exudation, polluting the appearance of the grain. Peeling away the diseased seeds, it can be seen that some or all of the seeds turn into black powder.
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