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Can emamectin benzoate control the rice leaf roller?
Emamectin benzoate is a new type of high-efficiency semi-synthetic antibiotic insecticide synthesized starting from the fermentation product avermectin B1. It has the characteristics of biological pesticides such as ultra-high efficiency, low toxicity (the formulation is nearly non-toxic), no residue, and no pollution. Compared with avermectin, its insecticidal activity is first increased by 1-3 orders of magnitude. It has extremely high activity against the larvae of Lepidoptera insects and many other pests and mites. It has both stomach poison action and contact action, and has very good effects at very low doses (0.084~2g/ha), and in the process of controlling pests it is harmless to beneficial
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Introduction to the Jiudao 22 rice variety (formerly known as Jiu 9432)
Breeding institution: Jilin City Academy of Agricultural Sciences, Jilin Province, China. Variety source: Shonai 324 / Fujikei 138. Review opinion of the National Variety Approval Committee: This variety is a conventional japonica rice variety. When planted in Jilin Province, its whole growth period is about 153 days, similar to "Qiuguang". It shows high and stable yield, moderate resistance to rice blast, and medium grain quality. It is suitable for planting in rice regions of northern China with a maturity period similar to "Qiuguang". Upon review, it meets the national variety approval standards and has been approved.
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Neolitsea sericea is a native tree species of Shanghai
Neolitsea sericea (Bl.) Koidz. LAURACEAE Current status: rare species. Distributed only in a relatively narrow area along the eastern coast of China. According to literature records, it is also distributed in Chongming Sheyu, Shanghai. Due to excessive felling for firewood, few adult trees remain, and most of them have grown from sprouts. Morphological characteristics: Evergreen tree, up to 12 m tall; branchlets greenish, smooth, current-year branches often covered with brown-yellow silky hairs. Leaves alternate, leathery, oblong or ovate-oblong,
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Detailed Explanation of Key Techniques for High-Yield and High-Quality Cultivation of Black Rice
Black rice is an ancient and precious rice variety in China. It is rich in nutrients and has the functions of nourishing yin and replenishing blood, darkening hair and preventing aging. It has always been eaten as a tonic, and among the people it has the fine names of blood-nourishing glutinous rice, bone-setting glutinous rice, medicinal rice, longevity rice and monthly rice (eaten by women during confinement). Black rice is mainly distributed in Yunnan, Guizhou, Guangdong, Guangxi, Hunan and Shaanxi provinces. In the long course of cultivation, many precious farmer varieties have been formed, such as Yunnan Jinggu purple rice, Guizhou Huishui black rice, Guangxi Donglan ink rice and Hunan southwestern Hunan black glutinous rice. However, these varieties generally have tall plants, loose plant type, drooping leaves,
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Detailed introduction to the new late japonica rice variety Xiushui 217
Xiushui 217 was approved in March 2003 at the 27th variety approval meeting of the Provincial Crop Variety Approval Committee. In the 2000 provincial regional trial, this variety had an average yield of 428.63 kg per mu, 0.14% less than the control Xiushui 63 (not significant); in the 2001 provincial regional trial, the average yield was 509.54 kg per mu, 11.30% more than the control Xiushui 63 (reaching an extremely significant level); the two-year average yield was 5.28% higher than the control Xiushui 63. The two-year average whole growth period was 136.4 days, 2.8 days longer than the control Xiushui 63. 2
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Detailed Explanation of Key Technical Points for Soft-shelled Turtle-Rice Ecological Rotation
In recent years, China's soft-shelled turtle farming industry has developed rapidly. Adopting the soft-shelled turtle-rice rotation model can achieve rice cultivation without fertilization, while planting rice can also improve the bottom substrate of turtle ponds and reduce the occurrence of turtle diseases. Zhejiang Qingxi Soft-shelled Turtle Industry Co., Ltd. began conducting soft-shelled turtle-rice rotation experiments in 1999, and in practice summarized the ecological rotation model of "raising soft-shelled turtles for 2-3 years, planting one season of rice," which has been promoted and applied in production. 1. Construction of Rice-Planting Turtle Ponds. Each pond has an area of more than 3 mu, with the largest reaching
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What are the key cultivation techniques for rice-following beans?
Rice-following bean cultivation is a method in which, after the autumn rice harvest, the field is not ploughed or harrowed; instead, trenches are made, the field is divided into beds, and drainage is carried out, then soybeans are broadcast or dibbled on the bed surface and covered with rice straw. It has the advantages of simple planting, saving labour and time, low input, and good results, and is a short, flat, and fast project for raising multiple cropping and increasing grain, feed, and income. 1. Select improved varieties. There are many local soybean varieties; after mass purification and rejuvenation, those with good ecological adaptability, high yield, and disease resistance and with a moderate growth period can all be selected; for
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Introduction to the Characteristics of the Kongyu 131 Japonica Rice Variety
Bred by the Rice Research Institute of the Heilongjiang Academy of Land Reclamation Sciences. In the 1995-1996 regional trials, the average yield was 6767 kg/hm2, an average increase of 1.6% over the control Hejiang 19; in the 1999 production demonstration, the average yield was 7684.5 kg/hm2, an increase of 8.9% over the control Hejiang 19. The growth period is 127 days, requiring an active accumulated temperature of 2320°C. Plant height is 80 cm, panicle length is 14 cm, 80 grains per panicle, 1000-grain weight is 26.5 g, strong tillering ability, and a high percentage of productive tillers. 199
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Detailed Introduction to the Wandao 30 Rice Variety
Wandao 30 (formerly known as 88-23) was developed by the Anqing City Agricultural Science Institute in Anhui Province through systematic selection from variant plants of the late japonica variety Wangcheng Xuanliu. It passed certification by the Anhui Provincial Crop Variety Certification Committee in May 1996. After years of trials and demonstrations, it has shown high yield, good quality, good plant architecture, tolerance to fertilizer, resistance to lodging, and disease resistance, making it especially suitable for double-cropping late rice cultivation in the riverside region. Characteristics: plant height 75-85cm, compact plant type, dark green leaf color, large opening angle of lower leaves, wide leaves, short and erect flag leaf, which is beneficial for photosynthesis. Sturdy stems, tolerant to fertilizer and resistant to lodging.
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Fujian Academy of Agricultural Sciences Successfully Bred High-Quality Early Indica Rice Jingfu 4a
After 5 years of effort, the Fujian Academy of Agricultural Sciences has successfully bred a high-quality early indica rice - Jingfu 4a. Experts believe that this research achievement has reached the advanced level of similar international research. This achievement was successfully cultivated through arduous efforts by Zhou Tianli, a researcher at the Rice and Wheat Research Institute of the Fujian Academy of Agricultural Sciences, and his research group. Using Jingfu 4a to formulate early hybrid combinations can greatly improve the quality of China's early-season hybrid rice. According to relevant experts, for a considerable period of time in China, the high-quality male sterile lines used to formulate early hybrid combinations
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