Dissertation > Excellent graduate degree dissertation topics show

Studies on Effects Both on Rice Growth and Environment by Symbiosis of Rice and Ducks

Author: ZhangJianNing
Tutor: CaoCouGui
School: Huazhong Agricultural University
Course: Crop Cultivation and Farming System
Keywords: Rice Duck Soil Arthropod communities
CLC: S511
Type: Master's thesis
Year: 2005
Downloads: 167
Quote: 2
Read: Download Dissertation

Abstract

In order to ascertain the level of different ducks rice-duck farming on rice growth, soil characteristics and arthropod communities in the test 9 you 288 rice varieties, Jingzhou duck as test materials, design ducks 12 / 667m ~ 2 (equivalent to 4 / 224m ~ 2), 18 只 / 667m ~ 2 (equivalent to 6 / 224m ~ 2) two different levels of ducks, conduct field trials on rice-duck farming has been studied, the main The results are as follows: a rice-duck farming on rice growth and development of two kinds of ducks levels of rice-duck farming has increased the role of the root activity of rice heading stage, the effect is very significant; has increased effective panicles / hole role the difference was significant. 12 / 667m ~ 2 duck rice-duck farming has increased rice panicle development groups in the role of leaf area, the effect is significant; align heading specific leaf weight increased significantly effect: inhibition of rice heading stage The role of premature aging, the effect is significant; has the panicle development stage, heading stage the role of population structure optimization; has increased the role of plant height, the effect is significant. 18 / 667m ~ 2 duck rice-duck farming can promote the role of rice tillering highest, the effect is significant; has increased heading stage of the Culm sheath heavy role, obviously; has the panicle development stage, heading stage The variation of population structure; 18 / 667m ~ 2 duck rice-duck farming has delayed the maturity effect, the effect is significant. There are so grain weight, seed rate is reduced role, difference reached a significant level. Two rice-duck farming on soil in two kinds of rice-duck farming has increased the role of soil organic matter content, the effect is significant; has increased the role of soil available potassium, the effect was significant. 18 / 667m ~ 2 duck rice-duck farming significantly improve soil nitrogen content in the role. Three rice-duck farming on arthropod communities in two kinds of rice-duck farming can increase the uniformity of arthropod community role, including 12 / 667m ~ 2 duck rice-duck farming is better. Taking these findings concluded that 12 / 667m ~ 2 duck rice-duck farming on rice growth and development will help improve rice production, 18 / 667m ~ 2 duck rice-duck farming on rice growth and development may cause rice production. Rice-duck farming is conducive to optimizing the ecological environment of paddy. Above findings and conclusions for being promoted rice-duck farming technology system to provide scientific guidance and theoretical support.

Studies on Effects Both on Rice Growth and Environment by Symbiosis of Rice and Ducks

Abstract

Related Dissertations