改良低产红壤坡地实现玉米高产技术研究

Preliminary Studies on Technical Improvement of Poorly Yielded Red-earth for the Realization of High Yield of Maize

本文报道了采用深耕、深挖,双行条播,等高密植,挖掘排水沟、修筑防洪堤等措施,以消除上坡高地的径流水蚀作用,提高土层蓄水、保水、保土、保肥能力。并采用基肥三结合、因地制宜施肥,特别是在玉米生育盛期及时重施速效氮、磷、钾混合肥的施肥方法。结合选用抗逆性较强的玉米良种等综合、系统的作物种植管理制度,使玉米亩产514.81千克乃至670.53千克。

This paper persents an integrated technical improvement involving the deep plough, douhle rowed sowing, contoured dense planting, digging drainage ditch, and the construction of dam so as to eliminate the soil erosion,raising the capasity of soil conservation, strengtherning soil maintenance and soil fertility. The mixed fertilizer composed of fast nitrogen.Phosphorus and potasium was applied in time of the maize being sown, and at its growing stage in vigor. Selecting local cultivars resistant to various unfavorable environmental conditions and adopting an integrated cultivation management also made essential factors in the overall integrated improving measures.The experiment yielded maize highly by 514.81～670.53 kg per Mu.