Effects of planting techniques for two-season forage grass per year on soil enzyme activities in the alpine pasturing area of Northwesten Sichuan in Qinghai-Tibet Plateau
[Objective]The alpine pastoral area of Northwesten China experiences cold climates,resulting in a short forage growing season.Selecting triticale varieties with strong cold resistance for autumn sowing and rotating crops the following year can effectively enhance land-use efficiency and forage yield.[Method]Eight triticale lines(Gannong No.2 triticale,Gannong No.3 triticale,Gannong No.4 triticale,Gannong No.7 triticale,Tibetan feed No.1 triticale,and triticale lines C16,C23,C25,)were autumn sown and replanted with different crops:B1(Ti-betan feed No.1 triticale×50%feed pea),B2(50%Tibetan feed No.1 triticale×50%Vicia sativa),B3(50%Qingtian No.1 oats×50%forage pea),B4(50%Qingtian No.1 oats×50%Vicia sativa).The study investi-gated the effects of autumn-sown triticale and multiple cropping on soil physics and chemistry(pH,organic matter,to-tal nitrogen,total potassium,total phosphorus,available nitrogen,available phosphorus and available potassium),as well as enzyme activities(catalase,alkaline phosphatase,urease and sucrase).[Result]The results showed that soil enzyme activities improved after autumn-sown triticale and multiple cropping.[Conclusion]Overall,autumn-sown Gannong No.4 triticale intercropped with 50%Zangsi No.1 triticale×50%forage pea had a significant impact on soil physicochemical and enzyme activities.This approach enhanced soil physicochemical environments,improved en-zyme activities,and contributed to increased forage yield.
NETL
NSTL
万方数据
