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paddy field
Off-line experiments have been conducted with IAP94 land surface model on different surface types (cropland, forest and paddy field) in different seasons (spring, summer and autumn) over the Huaihe River basin.
      
Pronounced concentration-dissipation law of total function score value occurs in paddy field units, with three ranges, i.e., 79~68.5, 68.5~59 and 59~51.
      
Paddy field quality is divided into three gradations, and the scales are 18 220.9 ha, 5410.6 ha and 2890.9 ha.
      
A 21-day laboratory incubation experiment was conducted to investigate the impact of pesticides (insecticide, herbicide, fungicide) on paddy field soil health under controlled moisture (flooded soil) and temperature (25°C) environment.
      
N2O emission from paddy field under different rice planting modes
      
Consequently, the land-cover is divided into five subclasses, namely water, paddy field and wetland, bare dryland and sparse shrub, secondary forest and density forest.
      
secondary forest, bare dryland and sparse shrub converted to density forest; and density forest converted to secondary forest and paddy field and wetland.
      
A new species of Conchostraca belonging to the genusLynceus Müller, 1776, obtained from a rain-filled paddy field in Kerala, is described and illustrated.
      
Mean nematode number per seed increased and mean degree of seed swelling decreased as the paddy field infestation of white tip disease increased.
      
For paddy field means, there was a significant, negative correlation between the mean nematode number per seed and the mean degree of rice seed swelling.
      
The nematode exhibited a clumped distribution among seeds in each paddy field.
      
Four mid-season japonica rice cultivars (including lines): Lianjiajing 2, Huajing 5, 0026 and 9823, were grown in the paddy field.
      
It was concluded that the winter-fallowed paddy field in hilly areas of South China was the source of atmospheric CO2 and N2O, and the sink of atmospheric CH4.
      
Application of SCS curve number method for irrigated paddy field
      
Genera ofFilenchus, Psilenchus andTylenchus in paddy field occurred at the depth of 0-20 cm; whileParatylenchus in fallow field and woodland, as well asPratylenchus in maize field presented in the deeper soil layers (0-80 cm).
      
The numbers ofFilenchus andParatylenchus in paddy field,Pratylenchus in maize field andParatylenchus in fallow field were negatively correlated with soil pH, and positively correlated with total C, total N and alkai-N.
      
Five typical land covers in West Tiaoxi catchment of China, including mulberry garden, bamboo forest, pinery, vegetable plot and paddy field, were studied on nitrogen loss in artificial rainstorm runoff and sediment.
      
The loss of total nitrogen in runoff of mulberry is the largest and that of paddy field is the smallest.
      
The reclaimed marsh has mainly converted to paddy field and dry land.
      
However, there are 17.11 km2 dry land and paddy field, which belong to the region of serious heavy metal contamination and are not fit for planting crops.
      
 

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