旱地苹果园不同覆盖栽培技术研究

Various Mulch Cultivation Techniques for Dry Land Orchard

旱地苹果园不同覆盖措施的研究结果表明，覆草可使旱地苹果园土壤含水量增加１．２％～６．４％；土壤有机质含量提高３．０％，较地膜覆盖提高０．９７％；氮、磷、钾含量分别比对照提高２８．６％、２５．０％、５６．５％，并能显著增加树体内的营养物质和叶绿素含量，促进生长发育，提高产量，降低土壤容重。

Studies on various measures with mulch for dry land orchard show that covering with straw could increase the water content of the soil of dry land orchard by 1.2%～6.4% and the organic matter of the soil by 3.0%,an increase of 0.97% than that with plastic film.The N、P and K content of the soil was 28.1%、25.0% and 56.5% higher than that of the control respectively.The nutrient substance and chlorophyll content of the apple tree was increased significantly,the yield was enhanced and the volume weight of soil was reduced.The effect of covering orchard ground with straw was obviously higher than that of covering with plastic film and the control.