[Long-term trial on fertilization and on use of recycled nutrients in farming systems V. Response of crop yields to fertilization in different precipitation years and estimates of water and nutrient interaction].
According to the responses of crop yields under fertilizations in 1996 with normal precipitation (456 mm in crop growth season) and in 1998 with higher precipitation (598 mm in growth season), the effect of water and nutrient interaction on crop yields in semihumid-semiarid region of west Liaoning Province were estimated. Under N application and sufficient water supply (more rainfall), the increase of crop yields was 3,056 kg.hm-2, of which, 1,996 kg.hm-2 was estimated from water-nutrient interaction, while in NP and compost treatment with sufficient water supply, the yield increase was 4,703 kg.hm-2, of which, 1,554 kg.hm-2 was estimated from water-nutrient interaction.
Zhang
Lu
L
Institute of Applied Ecology, Chinses Academy of Sciences, Shenyang 110016, China.
Shen
Shanmin
S
Yu
Wantai
W
Lian
Hongzhi
H
D000383:Agriculture / Q000379:methods*; D018556:Crops, Agricultural / Q000254:growth & development*; D005308:Fertilizers; D011891:Rain; D014867:Water / Q000378:metabolism
D005308:Fertilizers; D014867:Water