期刊论文、会议论文

中文

作物研究

1001-5280

2019

33

5

402-407

国际(长沙)农田生态种养发展论坛

国际(长沙)农田生态种养发展论坛论文集

2019-09-06

长沙

湖南省作物学会<&wdkj&>湖南农业大学

10.16848/j.cnki.issn.1001-5280.2019.05.14

10.26914/c.cnkihy.2019.001335

本校为第一机构

为探明稻鳖共作模式中的土壤养分变化及产量形成规律,选取湖南地区常用的两个水稻品种黄华占(H)及Y两优800(Y),设置稻鳖共作模式(T)及常规单作模式(N),以头季稻+再生稻(R)两季种植的方式,通过定时测定土壤中的养分含量变化情况及产量,进行了对比试验.结果表明:T模式中全氮、全磷含量呈"峰"型变化,N模式全程为缓慢下降趋势,相对平均差值为全氮15.3％、全磷16.35％;碱解氮、有效磷及有机质等指标在不同模式间变化趋势相似,相对平均差值为碱解氮5.3％、有效磷6.97％;T模式中有机质含量长期保持较高水平,相对平均差值为6.7％.T模式头季稻平均增产9.75％,再生稻平均增产10.05％.

As a new type of cultivation mode with high yield and high income,rice - turtle fanning is of great significance to agricultural transformation and fanners’ income increase in China. In order to find out the change of soil nutrients and the law of yield formation in rice - turtle farming mode,two common varieties Huanghuazhan ( H ) and Y Liangyou 800( Y) in Hunan were selected to set up rice - turtle fanning mode (T). Compared with the conventional single cropping model (N).the changes of nutrient content and yield in soil were measured regula...