Annual Nutrient Balance and Soil Chemical Properties in Heavy Multiple Cropping System in the Coastal Area of Southeast Lake Dianchi, Yunnan Province, China

Decreasing input–output balance by reducing chemical fertilizer input without yield loss in intensive cropping system in the Coastal Area of southeast Lake Dianchi, Yunnan Province, China

“…A previous field study (Wang et al, 2015) was conducted in the coastal area of southeast Lake Dianchi, located southwest of Kunming City, the provincial capital of Yunnan province, in southwest China (24°42′ N, 102°42′ e) (Figure 1). After 2000, the paddy rice-broad bean cropping system of this area was converted to vegetable and flower fields with vinyl houses, demanding more application of fertilizer.…”

“…The vegetables grown in this area were mainly leafy and cropping intensity in most fields was six or seven crops per year. The nitrate, water-soluble P, and water-soluble K in these vegetable fields were 163, 13, and 97 mg kg −1 , respectively (Wang et al, 2015). Soils used for pot experiments were collected from six fields (Figure 1).…”

“…Soils used for pot experiments were collected from six fields (Figure 1). Field 1 had been converted from a paddy field and was awaiting for vegetable cultivation just before soil collection for the pot experiment, and field of chemical fertilizer for stem lettuce in the control plot was the average from 32 vegetable fields reported in a previous study (Wang et al, 2015), defined as N100-P100-K100. The application amounts of N, P, and K in the control plots were 879, 386, and 727 mg pot −1 , respectively.…”

“…We conducted a study in the coastal area of southeast Lake Dianchi, Yunnan province, China (Wang et al, 2015). Heavily multiple vegetable cropping in vinyl covered greenhouse is dominant in this area, with large inputs of chemical fertilizer and livestock manure.…”

Distribution of inorganic phosphorus in profiles and particle fractions of Anthrosols across an established riparian buffer and adjacent cropped area at the Dian lake (China)

“…After each harvest in a year, the field is rotary plowed to a 0.15 m depth. A large amount of chemical fertilizer and animal manure is applied in this production area, resulting in P application of approximately 136-195 kg ha −1 each year (Wang et al, 2015). The buffer area, which is approximately 100-200 m wide, was converted from the cropped area in 2009 into an indigenous tree plantation (Salix babylonica L. and Metasequoia glyptostroboides).…”