摘要
研究结果表明，沟肥埋草显著减少了土壤渗漏损失，土壤含水量、吸水力、有机质、有效养分含量均显著提高，创造了营养沟内水肥气热良好稳定的局部环境；覆膜覆草则主要改善了表层水分状况。营养沟内覆膜和覆草的表层根系密度极显著提高，特别是草沟的边缘界面区域，根系密度为对照的４～５倍，植株新梢生长量、新梢粗长度、叶面积显著增加。
Burying straw in trench can reduce the soil leakage significantly and improve the water content, water absorbing capacity, organic matter and efficient nutrition content of soil. The inner trench was the favourable and stable environment for water, nutrition, air and temperature. The root density of inner trench and 0～20 cm layer of mulching treatment increased remarkably, especially the boundary area between trench and original soil. The root density of boundry was 4～5 times by that of control. The shoot length, shoot width and leaf area raised significantly.
出处
《西北农业学报》
CAS
CSCD
1997年第3期70-73,共4页
Acta Agriculturae Boreali-occidentalis Sinica
关键词
苹果
山丘旱地
沟草养根
果园覆盖
Apple
Hilly dry orchard
Bury straw in trench
Mulch
