Abstract:

Abstract: 【OBJECTIVE】 In order to study on the the reasonable density of Luoyu 4 hao corn, thus causes the improved seed and the area ecological environment adapts, the display community superiority captures the high production.【METHOD】Use the method of Single factor randomized block experiment to study the Influence of density to yield and agronomic characters. 【RESULTS AND CONCLUSION】Under high density planter condition，Luoyu 4 hao shows Lodging resistance, and good seed. In 75000 /hm2 density range,it has non-empty trees, lodging and bare sharp phenomenon. under the medium sludge fertilizer condition,Luoyu 4 hao’s suitable density is 60000-75000 /hm2, is the dense corn hybrid, so increase the planting density, in order to ensure sufficient harvesting ears is the key to achieve high yield.