[Water use efficiency and rice yield under different water managements].
Subtle plot experiment was conducted to study the growth and water use status of rice cultivated on waterlogged soil and upland soil mulched with plastic film, semi-decomposed wheat straw and nothing in Nanjing Agricultural University. The results showed that 349 to 473 mm of water were required by rice cultivated on upland soil mulched with film, straw or nothing, and 732.5 mm of water was required on waterlogged soil. The water productive efficiencies for rice grain and biomass were between 0.899 to 1.273, and 1.655 to 2.321 g.kg-1, respectively in upland cultivation, while 0.766 and 1.459 g.kg-1 in waterlogged cultivation. Rice cultivated on upland soil mulched with semi-decomposed straw achieved 90% or more economic yield on waterlogged soil.
Qian
Xiaoqing
X
College of Resources and Environment Science, Nanjing Agricultural University, Nanjing 210095, China. xiaoqingqian@163.com
Shen
Qirong
Q
Xu
Yong
Y
Wang
Juanjuan
J
Shen
Hui
H
D018556:Crops, Agricultural / Q000254:growth & development*; D012275:Oryza / Q000254:growth & development*; D018515:Plant Leaves / Q000378:metabolism; D014867:Water / Q000378:metabolism*
D014867:Water