冬种马铃薯稻草覆盖免耕栽培田间土温变化研究

A research on soil temperature change of winter potato cultivation with straw-cover and no-tillage

为探讨稻草覆盖免耕栽培对马铃薯田间土温的影响,从而为稻草覆盖免耕栽培冬种马铃薯推广提供科学依据,2007年冬在广西大学农场进行冬种马铃薯稻草覆盖免耕栽培田间土温变化的大田试验。结果表明：在低温条件下,稻草覆盖免耕栽培起到了很好的保温效果,活动积温比对照平均提高14.9%,日均增温1.61℃,从而提高了冬季马铃薯的抗寒能力。其中,稻草覆盖免耕栽培对0～10cm土层的保温效果要比对15～20cm土层的保温效果好。

In order to study the influence on soil temperature of potato cultivation with straw-cover and no-tillage, and to provide scientific basis for the technical extension, a field experiment was conducted at farm of Guangxi University in winter 2007 to study the soil temperature change of winter potato cultivation with straw-cover and no-tillage. The results showed that in low temperature condition, this technology could play a good temperature-keeping function and the active accumulated temperature would be higher averagely by 14.9 % comparing with the control group（average temperature increase： 1.61℃/day） so as to enhance cold resistance of the winter potato. Thereinto, the heat reservation effect of 0-10cm soil layer for straw-cove and no-tillage cultivation could be better than that of 15-20cm.