White pest control

Diseases mainly include rust, rice blast, sheath blight, leaf spot disease and micro-sclerotia. Rust occurs on the front and back surfaces of leaves and on leaf sheaths, and the remnants of the edge of the skin are prominent. In the late stage of growth, the teliospore is formed, gray to black, and long strips are not exposed. The leaves of rice blast disease began to appear strip-shaped or fusiform lesions, and then the whole leaf was scorched. When severe, the whole field was burned. Rhizoctonia is most likely to occur during the period from flooding to the pregnancies. At the beginning of the disease, water-stained dark green oval lesions appeared on leaf sheaths and then expanded into moire lesions. When the disease is severe, the temporal lobe is dead and the flesh is dry and thin. Flax leaf spot was small brown spots on the tip of the leaves at the onset of the leaves, and then gradually expanded into round, oval, spindle-shaped lesions, light brown to dark brown on the edges, yellow-brown to grayish white in the middle, and sometimes slightly lenticular, Peripheral yellow or light yellow halos. The late lesions can heal into pieces and die with each other. Most of the lesions gradually wither or fall from the outer edge of the leaf margins or leaves. The lesions have brownish dew on both sides of the lesions, and sometimes appear as rims. The Sclerotinia sclerotiorum is mostly saprophytic or parasitized on leaf sheaths at the late growth period of P. oleifera, impairs water-stained discoloration caused by leaf sheaths, yellows after significant lesions are formed, and numerous smut nucleus grow within the sheath. The above diseases are caused by high temperature and high humidity. Elimination of bacterial sources, such as the cultivation of disease-free varieties, when the winter burned lotus pier, to eliminate diseased leaves, field replacement, etc.; increased base fertilizer and phosphorus and potassium fertilizer, nitrogen fertilizer in the middle and late, etc.; reasonable dense planting, shallow irrigation in the early, mid-term proper Tian et al.; Grasp the early stages of disease prevention and treatment. Rhizoctonia solani, rice blast can be used carbendazim WP or thiophanate-methyl 500 to 800 times, 10 to 15 days continuous control of 2 to 3 times; leaf spot can be used 40% of different rice bran net 600 times, in 10 to 15 days of continuous control of 2 or 3 times; rust, small sclerotium can be used 80% dexamethasone WP 800 times, in the 10 to 15 days of continuous control of 2 or 3 times. Insect pests mainly include giant salamanders, borer bugs, aphids, and leafhoppers. The large larvae and borer larvae drilled into the quail meat during the pupal stage and ate the heart and oyster meat, resulting in dead heart sprouts and waste products. This occurred three generations per year. The biological control method is to remove the weeds in the field in time, and cut off the yellow stems and leaves in winter to destroy the overwintering larvae. The drug control method is to use 50% of the sap of the pine sap in the hectare with 3 kg of water and 6 to 75,000 kg of water per hectare, or Two days before the peak of the anthill hatching, they were treated with insecticidal double or insecticidal spray. The locust infestation showed that the leaves were sprouted and crumbled after being damaged. The control method was sprayed with 40% dimethoate emulsion 2000 times in the initial stage. The adult leafhoppers and nymphs clustered on the white leaves of the nymphs and sucked the sap, resulting in yellow leaves. The 40% Suhua 203 emulsion can be used for 1000-1500 grams, and 1000 kg of water can be sprayed.

Tyvek Sterilization Reel

Tyvek Sterilization Reel,Sterilization Pouches ,Tyvek Medical Pouches ,Sterilization Pouches For Autoclave

Disposable Medical Supplies Co., Ltd. , http://www.nbsterilizationpouch.com