大棚黄瓜中有机磷农药残留调查   总被引：1，自引：0，他引：1  

塔娜  田维平  张志娟  张秀芳 《内蒙古农业大学学报(自然科学版)》1997,(3)

本文对大棚黄瓜中3种有机磷农药残留量进行了调查。结果表明黄瓜中有机磷农药残留量范围为敌敌畏未～1．584mg·kg－1、甲基对硫磷为未～0．133mg·kg－1，马拉硫磷未～0．0188mg·kg－1。大棚黄瓜中3种有机磷农药残留量的检出率和超标率为甲基对硫磷＞敌敌县＞马拉硫磷。  相似文献   

Comparative Analysis of MLR,ANN, and ANFIS Models for Prediction of Field Capacity and Permanent Wilting Point for Bafra Plain Soils     

Sevda Taşan  Yusuf Demir 《Communications in Soil Science and Plant Analysis》2020,51(5):604-621

ABSTRACT

Soil hydraulic parameters like moisture content at field capacity and permanent wilting point constitute significant input parameters of various biophysical models and agricultural practices (irrigation timing and amount of irrigation to be applied). In this study, the performance of three different methods (Multiple linear regression – MLR, Artificial Neural Network – ANN and Adaptive Neuro-Fuzzy Inference System – ANFIS) with different input parameters in prediction of field capacity and permanent wilting point from easily obtained soil characteristics were compared. Correlation analysis indicated that clay content, sand content, cation exchange capacity, CaCO₃, and organic matter had significant correlations with FC and PWP (p < .01). Validation results revealed that the ANN model with the greatest R² and the lowest MAE and RMSE value exhibited better performance for prediction of FC and PWP than the MLR and ANFIS models. ANN model had R² = 0.83, MAE = 2.36% and RMSE = 3.30% for FC and R² = 0.81, MAE = 2.15%, RMSE = 2.89% for PWP in training dataset; R² = 0.80, MAE = 2.27%, RMSE = 3.12% for FC and R² = 0.83, MAE = 1.84%, RMSE = 2.40% for PWP in testing dataset. Also, Bayesian Regularization (BR) algorithm exhibited better performance for both FC and PWP than the other training algorithms.  相似文献   

Lymphokines modulate the growth and survival of thymic tumor cells containing a novel feline leukemia virus/Notch2 variant.     

Michael L. Linenberger  Jennifer L. Rohn  Ta Deng  Stephanie Ellis-Smith  Richard Ingber  Julie Overbaugh 《Veterinary immunology and immunopathology》1999,70(3-4):223-243

  相似文献   

Lymphokines modulate the growth and survival of thymic tumor cells containing a novel feline leukemia virus/Notch2 variant     

Michael L. Linenberger  Jennifer L. Rohn  Ta Deng  Stephanie Ellis-Smith  Richard Ingber  Julie Overbaugh 《Veterinary immunology and immunopathology》1999,70(3-4)

  相似文献   

内蒙古西部地区番茄溃疡病病原细菌的研究     

胡俊  胡宁宝  塔娜  康志强  张国贤 《内蒙古农业大学学报(自然科学版)》1998,(4)

从内蒙古西部地区番茄病株上分离到病原细菌,经致病性测定和细菌学鉴定,确定４个供试菌株为ＣｌａｖｉｂａｃｔｅｒｍｉｃｈｉｇａｎｅｎｓｅＳｕｂｓｐ．ｍｉｃｈｉｇａｎｅｎｓｅ（Ｓｍｉｔｈ）Ｄａｖｉｓｅｔａｌ．并测得其最适生长温度２５～２９℃,最高生长温度３９℃,致死温度５１℃,生长ｐＨ范围５．０～８．５,最适生长ｐＨ值６．０～６．５。  相似文献   

Collection,preservation and distribution of Oryza genetic resources by the National Bioresource Project RICE (NBRP-RICE)     

Yutaka Sato  Katsutoshi Tsuda  Yoshiyuki Yamagata  Hiroaki Matsusaka  Hiromi Kajiya-Kanegae  Yuri Yoshida  Ayumi Agata  Kim Nhung Ta  Sae Shimizu-Sato  Toshiya Suzuki  Misuzu Nosaka-Takahashi  Takahiko Kubo  Shoko Kawamoto  Ken-Ichi Nonomura  Hideshi Yasui  Toshihiro Kumamaru 《Breeding Science》2021,71(3):291

Biological resources are the basic infrastructure of bioscience research. Rice (Oryza sativa L.) is a good experimental model for research in cereal crops and monocots and includes important genetic materials used in breeding. The availability of genetic materials, including mutants, is important for rice research. In addition, Oryza species are attractive to researchers for both finding useful genes for breeding and for understanding the mechanism of genome evolution that enables wild plants to adapt to their own habitats. NBRP-RICE contributes to rice research by promoting the usage of genetic materials, especially wild Oryza accessions and mutant lines. Our activity includes collection, preservation and distribution of those materials and the provision of basic information on them, such as morphological and physiological traits and genomic information. In this review paper, we introduce the activities of NBRP-RICE and our database, Oryzabase, which facilitates the access to NBRP-RICE resources and their genomic sequences as well as the current situation of wild Oryza genome sequencing efforts by NBRP-RICE and other institutes.  相似文献   

Use of Onion (Allium cepa) and Garlic (Allium sativum) Wastes for the Prevention of Fungal Disease (Saprolegnia parasitica) on Eggs of Rainbow Trout (Oncorhynchus mykiss)     

Halil Özçelik  Yiğit Taştan  Ertugrul Terzi  Adem Yavuz Sönmez 《Journal of fish diseases》2020,43(10):1325-1330

This study was designed to prevent fungal disease (Saprolegnia parasitica) that occurs on rainbow trout eggs (Oncorhynchus mykiss) by using wastes of onion (Allium cepa) and garlic (Allium sativum) plants. For this purpose, fertilized rainbow trout eggs were exposed to garlic skin, garlic stem and onion skin aqueous methanolic extracts by bathing in concentrations of 0.4, 0.8, 1.6 and 3.2 g/L, whereas the control group was left untreated. The larvae in all groups were monitored until they become free-swimming larvae, the number of eggs died due to fungus was recorded, and the data obtained from experimental groups and control group were compared. As a result, it was determined that onion skin had no effect on the number of eggs that died due to fungus (p > .05), while garlic skin and garlic stem extracts significantly reduced the number of fungal infestations without affecting the number of live larvae or the embryological development of the eggs (p < .05). In light of these data, we conclude that garlic skin (0.4, 0.8, and 1.6 g/L) and garlic stem (0.8 and 1.6 g/L) aqueous methanolic extracts are effective at preventing Saprolegnia parasitica infestation on rainbow trout eggs and may be used in aquaculture.  相似文献   

规模养殖业的清洁生产技术 ——高床发酵型生态养猪技术研究     

曾庆东  徐伟  刘开红  吴塔 《现代农业装备》2021,42(1):61-64

以一个规模化高床发酵型养猪模式为案例,结合清洁生产的理念,从技术、环境、经济等方面阐述项目作为清洁生产技术,可进行示范推广.  相似文献