Research on Dynamic Variation of Dry Matter Accumulation in Maize Cultivated by "Double-row Interlaced Planting" Method

Three planting forms(SHJC,SHPX,PX) were used to study the dynamic variation of dry matter accumulation and explore the yield increasing mechanism of maize cultivated by "Double-row Interlaced Planting"(SHJC) with the variety Zhengdan 958 as material.The results showed that the root number and dry matter weight increased obviously and the stem was thick and strong when the maize cultivated by SHJC method.After seeding for 50 days,the accumulated dry matter of maize cultivated by SHJC was 25% ~ 40% and 60% ~ 80% more than that of maize cultivated by SHPX and PX methods respectively.In conclusion,the SHJC cultivating method could reasonably coordinate the contradiction between population and individual,and was a revolution in cultivation history of China,which provided a new pathway to obtain high yield by increasing plant density.