摘要
在大田条件下,设计2种秸秆还田方式和3个氮肥水平,研究秸秆还田与氮肥管理对水稻养分吸收的影响。结果表明:秸秆还田与实地氮肥管理(SSNM)能提高抽穗和成熟期各器官中N、P、K含量,使得群体源、库进一步协调,增加抽穗期非结构性碳水化合物,减少成熟期茎鞘中N SC(非结构性碳水化合物含量)的残留,促进同化物向籽粒的运转。该文还对不同处理下养分吸收的差异进行了分析。
Under the field-grown condition, two straw residue and three nitrogen application rates were designed to investigate the remobilization of assimilation and nutrient absorption. The results showed that straw residue return and SSNM（applying nitrogen based on the timing, amount of nitrogen and values of chlorophyll meter）. can increase N, P, K content in different organs at both heading and maturity stages. Likely the relation between source and sink was harmonized under straw residue return and N management. This technique promotes carbon remobilization from culms and sheaths to grains and NSC（non-structural carbohydrate） residue in the stems at heading stage increased, and the reversed result was observed at the maturity stage. Reasons for the differences in the formation of nutrient absorption were discussed in the paper.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2007年第7期191-195,共5页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家自然科学基金(30370828)
"948"重大国际合作项目(2003-Z53)~~
关键词
水稻
秸秆还田
实地氮肥管理技术
产量
物质运转
养分吸收
rice
straw residue return
site-specific nitrogen management technique
grain yield
remobilization of assimilation
nutrient absorption
作者简介
徐国伟（1978-）,男,博士研究生,从事水稻栽培与生理的研究.扬州 扬州大学农学院,225009.Email：gwxu2007@yahoo.com.cn
杨建昌（1956-）,男,教授,从事水稻栽培与生理的研究.扬州 扬州大学农学院,225009.通讯作者：Email：jcyang@yzu.edu.cn
