玉米宽窄行轮换种植、条带深松、留高茬新耕作制对土壤性状的影响

针对吉林省中部松辽平原台地旱情日益加重 ,黑土区培肥问题日趋严峻 ,采用玉米宽窄行轮换种植、条带深松、留高茬耕作新技术。通过 3年对土壤理化性状的分析表明 ,该项技术可以有效地提高土壤蓄水能力 ,建立土壤水库 ,更重要的是可以增加秸秆还田量 2 0 % ,增加土壤有机质 ,培肥地力 ,增加产量。因此是当前推广旱作节水农业技术中有效的办法。

Effects of New Cropping System on Soil Properties of Wide and Narrow Spacing Maize Rotation Planting, Striply Deep Loosening and Leaving High Stubble on the Ground

The current condition of drought in the Songlao Plain Platform in the middle part of Jilin Province becomes more serious year by year and the soil fertilizing problem in black soil area becomes more severe gradually. The new cropping technique of wide and narrow spacing maize rotation planting, striply deep loosening, and leaving high stubble on the ground was adopted to ease the condition. The analytical results of soil physichemical properties in the 3 years showed: The technique could not only effectively increase the soil moisture capacity, and established soil reservoir, but also more important was that it could increase the given back amount of stalks into soil by 20%, increase soil organic matter, fertilize the soil fertility and increase yield. Therefore it is the most effective technique in the dry culture agricultural techniques extended at present.