Study of Highly Efficient Cultivation Technique of Inter Cropping Sweet Potato Longzi 9 in Tobacco Field
In order to explore the highly efficient cultivation conditions of Longzi 9 on tobacco field,the yield of fresh storage roots,large tuber rate,starch and soluble sugar contents were studied by the orthogonal test.The orthogonal test L9(34)was demonstrated that the best combination of fresh storage root yield was found by planting on June 1st,placing two sweet potato plants on opposite sides between two tobacco plants,applying humic acid fertilizer(15 kg/ha)and compound fertilizer 225 kg/ha,and the interaction between interplanting time(A)＞fertilizer(C)＞planting time and fertilizer(AxC)＞planting methods(B),the best combination of yield of fresh storage roots was A2B1C2,obtained by planting on June 1th,planting two sweet potato plants on opposite sides between two tobacco plants,applying humic acid fertilizer 15 kg/ha and compound fertilizer 225 kg/ha.The main factors affecting the percentage of large storage roots of Longzi 9 was planting time.The highest large storage root rate was combination A1B1C1,when it was planted on May 20th,two sweet potato plants were planted on opposite sides between two tobacco plants,and 450 kg/ha compound fertilizer was applied.The effects on starch content were as follows:fertilizer(C)＞interplanting time(A)＞interaction between planting time and fertilizer(A×C)＞planting methods(B).The highest starch content was combination A1B3C3,obtained by planting on May 20th,two sweet potato plants planted perpendicular to the ridge surface,fertilizer 16 L/ha and compound fertilizer 225 kg/ha was applied.The effects of different treatments on the soluble sugar contents of Longzi 9 were not obvious.
Sweet potatoLongzi 9Intercropping sweet potato and tobaccoHigh efficiency cultivation
万方数据
维普
