- Through the wavelet analysis it was got that cycle of accumulative temperature is 8 years.
- With regard to accumulative temperature enough for one crop but insufficient for both, maize interplanting have to be adopted to realize both crops high yield.
- Abstract The developmental threshold temperature and effective accumulative temperature of Neomargarodes gossypii Yang during different development stages were determined.
- The meteorological data of 19 meteorology stations during 1961-2001 in north of Xinjiang were analyzed to process the change tendency of accumulative temperature of Northern Xinjiang.
- duration of accumulative temperature