作物学报Issue(2)：343-349,7.DOI:10.3724/SP.J.1006.2013.00343
长期稻-稻-绿肥轮作对水稻产量及土壤肥力的影响
Effects of Long-Term Rice-Rice-Green Manure Cropping Rotation on Rice Yield and Soil Fertility
摘要
Abstract
A long-term rotation system experiment has been arranged since 1982 to maintain the soil fertility and the sustainable productivity of rice multiple cropping system in hilly red soil region in south of Hunan, continuously improving the economic benefits and promoting agricultural sustainable development. During the winter-fallow period every year, planting milk vetch (T1), oil rapeseed (T2), and ryegrass (T3) were conducted to study the effect of green manures on rice yield and soil fertility. The results obtained can be summarized as follows: (1) Compared with the winter-fallow treatment (T4), the green manure treatments in-creased rice yield with a better yield stability. The average annual yield increase rate and effects showed a trend of T1>T2>T3. (2) Compared with T4, green manure treatments increased SOM (soil organic matter) content, and among green manure treatments T1 treatment had the significantly highest soil ASOM (active soil organic matter) content and a largest proportion of soil ASOM in SOM. (3) Compared with T4, green manure treatments increased soil total N and available N contents, promoted soil mineralization and absorption of soil K and P. Soil total N and available N contents in T1 treatment were significantly higher than those in the other treatments, and those in T2 and T3 treatments were significantly higher than those in T4 treatment. The effect of promoting soil P releasing in T1 treatment was better than that in T2 and T3 treatments, leading to more slowly soil total P accu-mulation in T1 treatment, and more potassium application needed. (4) T1 treatment is a better rotation pattern.关键词
长期试验/绿肥/水稻产量/土壤肥力Key words
Long-term experiment/Green manure/Rice yield/Soil fertility引用本文复制引用
高菊生,徐明岗,董春华,黄晶,曹卫东,曾希柏,文石林,聂军..长期稻-稻-绿肥轮作对水稻产量及土壤肥力的影响[J].作物学报,2013,(2):343-349,7.基金项目
本研究由国家公益性行业(农业)科研专项经费(201103005,201203030)和国家科技支撑计划项目(2012BAD05B05)资助 （农业）
