宁南旱区谷子集水保水技术效应研究

在宁南半干旱偏旱区采取地膜覆盖与抗旱剂相结合的集水保水抗旱种植技术,可有效改善土壤耕层水温状况,提高农作物产量和水分利用效率。试验结果表明,平膜穴播方式较垄膜沟植方式和露地提前4d出苗,垄膜沟植方式与平膜穴播方式较露地分别增产131·92%、98·40%,抗旱剂拌种处理较不拌种处理平均增产10·42%,水分利用效率提高0·065~0·886kg/m3,并取得较好经济效益。

Effects of techniques of water harvesting and water conservation on millet planting in semi-arid areas in south Ningxia

In the semi-arid areas of southern Ningxia, the techniques of water harvesting and water conservation in millet planting with film-mulching and FA seeding can effectively enhance the water supplying capacity and temperature of cultivated soil, and increase the yield and water use efficiency of millet. The experimental results show that the hole seeding under the film can make the millet emerge 4d ahead compared with other treatments, the millet yields of hole seeding under the film and furrow seeding with the film are increased by 131.92% and 98.40% compared with those without the film. The millet yield of FA seeding is increased by 10.42 % compared that without FA seeding. The water use efficiency of water harvesting and conservation techniques is increased by 0. 065- 0. 886kg/m^3 compared with CK. Furthermore, the planting techniques of film mulching and FA seeding are more beneficial to farmers bringing farmer more incomes.