Abstract:

In order to define the effects of mixed salinity stress on the castor yield and other agronomic characters, the ability of resistance salt and alkali among different castor hybrids providing a basis for the saline-alkali castor cultivation. The adaptive identification on ‘Zibo Castor No.7’, ZB-6 and ‘Zibo Castor No.8’ used different concentrations of artificial mixing saline soils. The results showed that: the three hybrids of castor were normal growth in the soil with 0.2%-0.6% mixed salinity, but high levels of mixed soil significantly inhibited the growth of the castor. The plant appearance of the performance for grow shorter, stalk thinner, smaller leaves, capsule number fewer and lower yield per plant caused by saline-alkali stress on castor. Analysis results of variance showed that, the different soil salinity to the influence of castor yield was very obvious. The average yield of ‘Zibo Castor No.7’, ‘Zibo Castor No.8’ and ZB-6 were 4276.95, 4146.45, 3613.80, 2678.85 kg/hm2, planted in 0%, 0.2%, 0.4% and 0.6% salinity treatment area respectively. LSD method for multiple comparisons showed that, the yield differences among treatments were a highly significant level.