Abstract:

For exploring the trend variation in field experiment,the blank test(BL)and the completely random(CR),the randomized completeblock(RCB),the Latin square(LS)and the p~2 lattice(LA)de-signs were arranged respectively in lowland and upland and the riceand wheat varieties were used as materials.The data obtained wereanalysed by the response surface method.The results showed:1.In all trials,the trend variations were very significant(α>0.01).In blank tests,the proportions of the trend variation SS to thetotal SS ...