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. 2015 Dec 1;5:17354. doi: 10.1038/srep17354

Table 3. The basic information of the five sites tested.

Site Rice variety Geographical conditions Basal and topdressing fertilization Transplanting and harvesting time, plant protection and irrigation Total N (%) Total P (%) Available K (mg kg−1) Organic carbon (g kg−1) pH
LH Tianyouhuazhan Subtropical monsoon climate zone with effective accumulative temperature of 5081 °C, mean annual precipitation of 1340 mm and mean annual temperature of 16.1–17.1 °C. Basal fertilizers were applied on 23rd July at a rate of 195 kg-0 kg-67.5 kg ha−1 (N-P2O5-K2O). N, P and K were applied in the forms of urea, calcium superphosphate and potassium chloride, respectively, with a basal to topdressing ratio of 7:0:3. Topdressing was done on 2nd August at tillering stage. The sowing and harvesting time was on 22nd June and 19th October, respectively. Pesticides were sprayed on 12th August and 19th September to control leafroller, stem borer, planthoppers and sheath blight. Irrigation was applied on 30th July, 5th, 12th August, 10th September and 2nd October, respectively, to maintain a 5.0 cm water layer above ground. 2.34 ± 0.00 0.35 ± 0.01 171.40 ± 1.78 27.02 ± 0.48 6.02 ± 0.03
LST T-you207 Subtropical monsoon climate zone with its mean annual precipitation of 1354.6 mm and mean annual temperature of 16.7 °C. Basal fertilizers were applied on 18th July at a rate of 450 kg ha−1 in the form of compound fertilizer (N: P2O5: K2O = 15:15:15). Topdressing fertilizers were applied at a rate of 180 kg ha−1 in the form of urea on 10th August 2012. Rice was transplanted on 23rd July and harvested on 19th October. Pesticides were applied on 13th August, 24th August, 9th September and 19th September, respectively, to control leafroller, stem borer, planthoppers and sheath blight. Irrigation was applied on 18th August and 20th September, respectively, to maintain a 5.0 cm water layer above ground. 2.59 ± 0.02 0.49 ± 0.02 160.48 ±  2.75 32.42 ± 0.66 6.02 ± 0.05
XY Jinyou277 Subtropical monsoon climate zone with its effective accumulative temperature of 5081 °C, mean annual precipitation of 1340 mm and mean annual temperature of 16.1–17.1 °C. Basal fertilization was applied on 14th July at a rate of 210 kg-375 kg-0 kg ha−1 (N-P2O5-K2O); nitrogen, phosphorus and potassium were applied in the forms of urea, calcium superphosphate and potassium chloride. Topdressing fertilizers were applied at the rates of 90 kg-0 kg-112.5 kg ha−1 (N-P2O5-K2O) at tillering stage on 23rd July. Rice was transplanted on 15th July and harvested on 12nd November. Pesticides were applied on 5st August and 17th, 28th September to control leafroller, stem borer, planthoppers and sheath blight. Irrigation was made to rice on 21st, 27th July, 9th, 29th August, 15th, 27th September and 11st, 24th November, respectively. 2.23 ± 0.03 0.50 ± 0.05 130.55 ± 0.41 37.62 ± 1.79 5.30 ± 0.01
DZ Bo II you 312 Tropical monsoon climate zone with its mean annual precipitation of 1500–2000 mm, and mean annual temperature of 23.3 °C. Basal fertilizers were applied on 22nd August at a rate of 1200 kg ha−1 in the form of compound fertilizer (N: P2O5: K2O = 15:15:15), while topdressing fertilizers were applied at a rate of 1200 kg ha−1 in the form of compound fertilizer (N: P2O5: K2O = 15:15:15) on 9th September 2012 at tillering stage. Rice was transplanted on 12nd August and harvested on 19th November. Pesticides were applied on 27th August and 11th September to control leafroller, stem borer, planthoppers and sheath blight. Irrigation was made to rice on 22nd August, 27th August and 22nd September, respectively. 1.00 ± 0.02 0.47 ± 0.01 71.78 ± 1.73 32.09 ± 1.25 5.28 ± 0.03
QH Tecanzhan 25 Tropical monsoon and marine humid climate zone with its mean annual precipitation of 2000 mm and mean annual temperature of 24 °C. Basal fertilizers were applied on 15th June at a rate of 112.5 kg ha−1 in the form of urea. Topdressing fertilizers were applied at a rate of 150 kg ha−1 in the form of compound fertilizer (N: P2O5: K2O = 16:16:16) on 25th June 2012. Rice was transplanted on 9th June and harvested on 15th September. Pesticides were applied on 1st July, and 15th July to control leafroller, stem borer, planthoppers and sheath blight. Irrigation was made to rice on 22nd June, 27th June and 22nd August, respectively. 1.37 ± 0.02 0.33 ± 0.03 81.70 ± 3.87 19.52 ± 0.64 5.69 ± 0.01