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STUDIES ON THE STRIP PATTETN OPTIMIZATION OF RELY INTERCTOPPING OF WHEAT AND MAIZE IN THE IRRIGATED AREA OF NINGXIA

Ma Shimng; Chen Wensi; He Wenshou  
The fied experiment of relay intercropping of wheat and maize in the differentstrip pattern was conducted. Results are as follows:the total yield of crops was highly corre lated with the yield of maize(r=0. 94* * ), and the yield of maize was correlated with the arearate of maize in the relay intercropping(r=0. 73* * ). According to the above relationship theregression equation was estsblyshed.Yz= 399. 50+0. 85X Yy=- 6. 49+1559. 54XIf the total yield of crops reaches 1, 000 kg/mu, the yield of maize should be over 706. 47kg/mu, and the area rate of maize over 45. 72%. On the analysis of the yield and the growth ofcrops in different patterns, optimal patterns are. pattern C(2. 10m, 1. 20-0. 90m), patternG(1. 20m, 0. 70-0. 5m)and pattern E(1. 80m, 1. 20-0. 60m).
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