For the armyworm, 2.5% Lambda-cyhalothrin is used for 40-80ml/mu, 5% Lambda-cyhalothrin is 12-18g/mu, and 20% oxothiomethasone is 80-100g/mu, 48%. Chlorpyrifos (Loss Ben) EC 30-40ml/mu, watered 40-50kg uniform spray. Control technology: (1) Chemical control. The corn field uses 20% of the larvae before the third instar to kill the pyrethroid EC 15-45 g/mu, spray 50 kg of water, or use 5% swab 1000-1500 times and 40% omethoate 1500-2000 times. Liquid or 10% Da Gongchen 2000-2500 times spray control. (2) Biological control. In the young instar larvae, the efficacy of the 200-PPM of Diflubenzuron 1-3 on the control of armyworm larvae is above 94.5%, and it does not kill natural enemies. It is safe for crops, and the amount of 200PPM does not pollute the environment.
Corn stickworm: a lepidopteran, Noctuidae, also known as marching worms, razor worms, five-color worms. Larvae: The larvae have a figure eight black pattern on the top of the head. The head is brownish-brown to red-brown. The 2nd to 3rd instar larvae are brown to gray-brown or dark red. The larvae over 4 years old are mostly black or grayish black. There are five back lines on the body, so it is also called the five-color worm. There are dark brown lines on the outside of the gastropod and there is a clear white line on the valve. Reddish brown. Adults: 17-20 mm in length, pale grayish brown or tan, male darker. There are two khaki round spots on the forewings, and a small white point below the outside round spot. There are a small black spot on each side of the white spot [1] and a dark brown twill on the top of the wing. Egg: Taro is slightly lustrous. It is white when it is first produced and gradually darkens. It is black when it hatches.
Black tea (dark tea) is named after the black appearance of the finished tea. It is one of the six major tea groups and is a post-fermented tea. The main production areas are Guangxi, Sichuan, Yunnan, Hubei, Hunan, Shaanxi and Anhui. The traditional black tea is made from high maturity black wool tea, which is the main raw material for pressing tightly pressed tea.
The process of making black tea generally includes four steps: killing, kneading, stacking and drying. Black tea is mainly classified as Hunan black tea (Fu tea, Qianliang tea, black brick tea, Tri-tip, etc.), Hubei green brick tea, Sichuan Tibetan tea (border tea), Anhui Gu Yi black tea (An tea), Yunnan black tea (Pu'er tea), Guangxi Liubao tea and Shaanxi black tea (Fu tea) according to geographical distribution.
The yellow powder in black tea is commonly known as golden flower, a beneficial microorganism, the so-called golden flower, is in the processing of raw materials through the flowering of this special procedure, specifically in the black tea bricks to cultivate a kind of coronary aspergillus substance called coronary scattered cystic bacteria, commonly known as the golden flower, observed under the microscope, each individual golden flower is umbrella-shaped clusters, the whole body is golden and eye-catching, ringed into a group, evenly distributed.
Yunnan black tea powder (Pu'er tea); Hubei black brick tea powder
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