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在四川丘陵旱坡地上,研究了不同种植技术对节水保水和粮食产量、经济效益的影响,结果表明:①在秸秆覆盖、免耕种植基础上,合理安排种植模式,可收到节水保水,提高产出的效果,“麦、玉、花、苕”模式节水保水效果最好,经济效益最高,“麦、玉、苕、豆”模式节水保水效果较好,粮食产量最高.②节水保水的关键措施,除免耕种植外,一是秸秆还田和间种豆科以增加土壤有机质;二是恰当配置匍匐作物和矮株作物,构建良好的地表植被增强生物覆盖.③秸秆还田和间种豆科有良好的改土培肥作用,对土壤有机质、氮素的效果最为明显,对钾和磷也有较好的作用.
The effects of different planting technologies on water saving and water saving and grain yield and economic benefits were studied on the hills and slopes in Sichuan hilly area. The results showed that: (1) On the basis of straw mulching and no-tillage planting, planting patterns could be reasonably arranged to receive water and water , The effect of improving output is “water-saving and water-saving effect of wheat, jade, flower and rice” mode is the best and the economic benefit is the highest. The highest yield.②Key measures to save water and save water, in addition to tillage cultivation, the first straw and the interfamily Leguminosae to increase soil organic matter; the second is the appropriate allocation of creeping crops and plants, to build a good surface vegetation enhanced organisms Covering.③storage of straw and inter-species legumes have a good soil fertility, soil organic matter, nitrogen is the most obvious effect on potassium and phosphorus also have a good effect.