The three treatments consisted of(1)the control(CK,no planting of oilseed
rape and planting of rice),(2)the rotation of Zhucang Huazi with rice,and(3)the
rotation of Chuanyou II-93 with rice.All 3.83.5 m2 plots were arranged in a
completely randomized design with three replicates per treatment.Seeds of
Zhucang Huazi and Chuanyou II-93 were sown in October of 2008,and the
seedlings were then transplanted into the plots in November with a planting
density of 16 plant sm2. After transplanting,basal fertilizers were applied at a rate
of 70kg N ha1 in the form of urea and 9 kg ha1 of boron fertilizer.Additional
fertilizers were applied at arate of 376 kg ha1 of a mixed fertilizer and
88 kg N ha1 in the form of urea in December and in January 2009,respectively.
Pesticides were sprayed during the growth of the oilseed rape when necessary as a
conventional practice.The oilseed rapes were harvested at maturity in May 2009.
After the oilseed rape were harvested,all the plots were submerged in water to
prepare for rice cultivation.The Xiushui 113 rice seedlings were transplanted into
the plots in June 2009.Then basal fertilizer was supplied at a rate of 123 kg N ha1
in the form of urea in July.Additional fertilizers were supplied at a rate of
70 kg N ha1 in the form of urea and 376 kg ha1 in the form of amixed fertilizer.
Pesticides were sprayed during the growth of rice whenn ecessary.The rice was
harvested at maturity in September 2009
The three treatments consisted of(1)the control(CK,no planting of oilseedrape and planting of rice),(2)the rotation of Zhucang Huazi with rice,and(3)therotation of Chuanyou II-93 with rice.All 3.83.5 m2 plots were arranged in acompletely randomized design with three replicates per treatment.Seeds ofZhucang Huazi and Chuanyou II-93 were sown in October of 2008,and theseedlings were then transplanted into the plots in November with a plantingdensity of 16 plant sm2. After transplanting,basal fertilizers were applied at a rateof 70kg N ha1 in the form of urea and 9 kg ha1 of boron fertilizer.Additionalfertilizers were applied at arate of 376 kg ha1 of a mixed fertilizer and88 kg N ha1 in the form of urea in December and in January 2009,respectively.Pesticides were sprayed during the growth of the oilseed rape when necessary as aconventional practice.The oilseed rapes were harvested at maturity in May 2009.After the oilseed rape were harvested,all the plots were submerged in water toprepare for rice cultivation.The Xiushui 113 rice seedlings were transplanted intothe plots in June 2009.Then basal fertilizer was supplied at a rate of 123 kg N ha1in the form of urea in July.Additional fertilizers were supplied at a rate of70 kg N ha1 in the form of urea and 376 kg ha1 in the form of amixed fertilizer.Pesticides were sprayed during the growth of rice whenn ecessary.The rice washarvested at maturity in September 2009
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