Laiwu is one of the important pests that injure cruciferous vegetables and has a fast reproduction rate and overlapping generations. The ins and outs of Laiwu suck the sap of the host plant with a sucking mouthpart; causing serious head water and malnutrition. When a dragonfly clusters on a young leaf, it often curls the leaves, but when it is light, it shows that the leaves are green and yellow, and the entire leaf falls on the ground because of water loss and softness. When the damage is serious, it cannot make the heart careless. In addition, vegetables can spread a variety of viral diseases. The frequent use of pesticides by vegetable farmers has accelerated the development of aphid resistance. The plant pesticide Weiluobao developed by the Institute of Biological Resources of Hengyang City has a unique effect on vegetable pests. In order to understand the effectiveness of Weilubao on the control of aphids, I stationed in a field in the suburbs of the city in October 1997. The efficacy test is now reported as follows: Best Goji procuct is in China,China is the origen of Goji Berry.Goji is a traditional,typical food in China.The majority of commercially produced goji comes from Ningxia and Xinjiang in Northwestern China, where they are grown on plantations totaling 200,000 acres.[self-published source] In Zhongning County, Ningxia, wolfberry plantations typically range between 40 and 400 hectares (100–1000 acres or 500–6000 mu) in area. As of 2005, over 10 million mu have been planted with goji in Ningxia. Ningxia Dried Goji Berry,Ningxia Goji Berry,Dried Goji Berry,Organic Ningxia Dried Goji Berry Ningxiahong Goji Industry Group Company Limited , http://www.ningxiahonggroup.com
First, test materials and methods
l. Tested pharmaceuticals and sources of Victoria Lvbao (0.5% veratridine solution), produced and provided by the Institute of Biological Resources of Hengyang City;
25% Kekenling EC, produced by Dafeng Pesticide Factory of Jiangsu Province and provided by Hengyang Plant Protection and Phytosanitary Station;
20% Confodol Solvent, manufactured by Bayer, Germany, provided by Hengnan County Plant Hospital.
2. The basic situation of the experimental field was set in six groups in the progressive village of the Huangshawan office in the outskirts of the city. The test field area was 623.3 square meters. The soil sandy loam and the soil fertility were uniform. The test crop was Chinese cabbage, 14-16 leaves, 1200 per mu. Hey.
3, the experimental design a total of 5 treatment, namely:
One-dimensional Lubao solution, mu with 166.67 ml (600 times liquid);
Two-dimensional Lubao solution, with 125 ml (800 times liquid);
325% of Qingqingling EC, with 83.33 ml (1200 times) of mu;
420% Confodic Concentrate Solvent, 25.00 ml per mu (4000 times liquid);
5 blank control.
The use of a random area and new arrangement, repeated three times, a total of 15 areas, each area of ​​41 square meters.
4. The application period, times and methods were applied on the October 16th, 1997 Chinese cabbage locusts during the prosperous period and applied once. The use of Gongnong-16 Knapsack sprayer spray. Mu spray liquid 100 kg, uniform spraying on the front and back of the blade. At the time of application, the cells were covered with plastic film to prevent the chemicals from interfering with each other.
5. Investigate the base number of insects before application of pesticides, investigate the control effect on the 1st, 3rd, and 7th days after application, and conduct a total of four investigations. Random sampling was conducted, and 3 surveys were conducted for each plot, and 3 plots were checked with red paint for each plot. A total of 9 and 27 leaves were examined for each treatment. After 1 day, 3 days and 7 days, the survival rate of the aphids and the corrected control efficacy were calculated, and the significance of the last investigation was tested.
6. Meteorological conditions Within 7 days after application (including the day of application), the daily average temperature is 23.36°C, the average daily relative humidity is 81.29%, 4 rain days, a total rainfall of 0.2 mm, and no rain within 24 hours after spraying.
Second, test results and evaluation
L, control effect of plant pesticides Wei Lubao prevention of aphid effect is good, 600 times mu, liquid medicine after lå¤, 3 days, 7å¤ control efficacy were 99.10%, 99.09%, 98.11%; 800 times mu, The control efficacy of 1 day, 3 days and 7 days after the drug was 97.97%, 99.19%, and 98.66%, respectively.
2ã€Evaluation and Recommendations 7 days after the drug's calibration effect was converted by arcsine, and then analyzed by variance, F=2.94 It is recommended to use 125 ml of vitamin M, with 100 kg of water, even spray.
October 25, 1997
Ningxia goji has been cultivated along the fertile floodplains of the Yellow River for more than 700 years and have earned a reputation throughout Asia for premium quality sometimes described commercially as "red diamonds". Government releases of annual wolfberry production, premium fruit grades, and export are based on yields from Ningxia, the region recognized with-the largest annual harvest in China, accounting for 45% of the nation's total yield of wolfberries (50,000 tons, 2013);
formation of an industrial association of growers, processors, marketers, and scholars of wolfberry cultivation to promote the berry's commercial and export potential;[16]
the nation's only source of superior grade wolfberries used by practitioners of traditional Chinese medicine.