陡坡垄槽栽培矮化果桑效益研究

Study on Benefit of Ridge trough Cultivation of Short—stalked Fruit Mulberry on Steep Slope Land

陡坡垄槽栽培矮化果桑效益研究结果表明:产桑椹汁较对照提高5.25倍;土壤侵蚀较对照(0.799～10.8t/亩)降至零(无侵蚀);50与100cm深土壤全氮含量为对照的90%和相同;全磷含量提高2.9%和26.2%;全钾含量提高3.18%和8.01%;水解氮均为对照的61.5%;速效磷提高39.02%和97.72%;速效钾为对照的91.48%和92.54%;经济效益较对照高5.55倍。

The results of the study show that compared witb control experiement,mulberry juice production increased to5. 25 times,soil erosion amount increadsed from 0. 799 - 10. 8 tonper mu (1/15 of ha. )to 0 ton/mu. Soil utrient con-centration in both depth of soil profiel of 0 to 50 cm and a to 100cm is 90% and 100% of the control ones respectivelyfor total N,102. 9% and 126. 2% for total P, 103. 18% and 108. 01% for total K, 61. 5% and 61. 15% for available N(hydiolysed N) . 139. 02% and 197. 72 % for available P and 91. 48 % and 92. 54 % for available K. The benefit of thecultivation is 5. 55 times of control one.