Effects of irrigation and weed-control methods on growth of weed and rice

作     者：Jacob Jeremiah Towa Guo Xiangping 

作者机构：Key Laboratory of High-Effective Irrigation and Drainage and Agricultural Water and Soil Environment in Southern ChinaMinistry of EducationHohai UniversityNanjing 210098China Irrigation and Technical Services DivisionMinistry of AgricultureFood Security and CooperativeDar es Salaama9192Tanzania 

出 版 物：《International Journal of Agricultural and Biological Engineering》 (国际农业与生物工程学报（英文）)

年 卷 期：2014年第7卷第5期

页      面：22-33页

核心收录：

学科分类：0710[理学-生物学] 0810[工学-信息与通信工程] 0202[经济学-应用经济学] 02[经济学] 020205[经济学-产业经济学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the National Science Foundation of China(No.51079042) the 111 Project of the Ministry of Education and the State Administration of Foreign Experts Affairs,China(Grant No.B12032) 

主　　题：irrigation weed control mulching hand weeding RCCI weed population agronomy traits paddy rice 

摘      要：A field experiment was conducted to study the effects of weeds control methods and an irrigation model on rice growth as well as water consumption and weed quantity in the paddy *** conventional paddy rice production,one of the most important irrigated crops,a significant amount of irrigation water is lost due to percolation and evaporation.A new irrigation model called the Rain-Catching and Controlled Irrigation(RCCI)model has been developed as a viable water-saving technology in the production of paddy *** this study the performance of the RCCI model has been analyzed under mulching,hand weeding and weedy conditions in Jiangsu Province of *** experiment was laid out in Randomized Complete Block Design(RCBD)with three replications and nine *** three replicates consisted of three water management regimes:high dry high flooding(HD-HF),high dry low flooding(HD-LF),and shallow and frequent irrigation(SF)water *** RCCI model was adopted in HD-HF and HD-LF while Flooding Irrigation(CFI)was adopted in SF as a *** nine treatments were equally divided under mulching,hand weeding and weedy *** lowest and maximum irrigation water delivery was 244.86 mm in mulching and 429.22 mm in hand weeding,respectively at *** the lowest and maximum irrigation water delivery was 300.1 mm in the mulching field and 680.72 mm under hand weeding,respectively at *** Nanjing 44 rice variety was *** was observed that weed density and dry weight were significantly influenced by the amount of irrigation water in all the mulching,hand weeding and weedy *** yield and the number of irrigations,the RCCI model produced better results than *** under RCCI was an effective method to control weeds and reduce labor *** addition,mulching decreases the use of herbicides and the risk of *** the other hand,mulching could improve yield and save water.