山旱区机修田当年种植玉米丰产技术研究

山旱区机修田当年种植玉米除采用人为熟化处理、早春抢墒覆膜、裁膜帘式播种外，于玉米苗期5叶和拔节期8叶每公顷喷PP2003、旱地龙及叶面肥，可以消除玉米苗期至拔节期由于气候因素和土壤因素造成的生理缺素症，具有抗旱、促长、平衡玉米植株体内营养分配的作用，促使玉米体内一系列生理功能的协调，从而达到丰产的目的。3年试验结果表明，该处理比人为熟化处理裸地播种生育期提前5个叶龄，产量提高4725kg/hm2，纯收入增加5538元／hm2。比相邻未机修田种植玉米生育期提前2个叶龄，产量提高1773kg/hm2，纯收入增加1156．5元／hm2。

A Study on the Prolific Technology for Current-year-planting Maize in Artificially-made Land in Arid Mountain Areas

Apart from adopting measures like artificial maturation, film mulching when soil was moisture in early spring and sowing seed under the film by curtain methed (cut the film apart and put it back afterseed is sowed), current-year-planting maize in artificially-made land was sprayed with PP2003 andapplied fertilizer on leaves when plant had five leaves in seedling pened and eight leaves in shooting period. In this way the technology could avoid physiological nutrient deficiency caused by climatic and soil elements from seedling Pened to shooting period, make plants resist drought, stimulate growth,coordinate physiological function, in the end obtain high yield. Three-year experiments showed compared with natural maturation artificaial maturation treatment could advanced growth period by 5-leaf time, as a result yield increased by 4 725kg/hm2 and pure income increased by 5538 yuan/hm2. Compared with none-treated land, this technology could advance growth Period by 2-leaf time, increase yield by 1773kg/hm2 and pare income by 1156.5yuan/hm2, so it is worth extending.