青海大学学报(自然科学版)
青海大學學報(自然科學版)
청해대학학보(자연과학판)
JOURNAL OF QINGHAI UNIVERSITY (NATURAL SCIENCE EDITION)
2015年
1期
8-13
,共6页
滴灌%旱区%水分利用率%肥料利用率
滴灌%旱區%水分利用率%肥料利用率
적관%한구%수분이용솔%비료이용솔
dripping irrigation%arid region%water use efficiency%fertilizer use efficiency
为探索干旱区青稞水肥高效利用的新途径,在青海省海西州利用滴灌技术,采用“3414”肥料设计,进行了不同施肥处理对青稞产量、水分利用率和肥料利用率的试验研究。结果表明:N2 P3 K2处理下,穗粒数、单株籽粒重和千粒重显著提高;在N2 P3 K2处理下青稞产量达到最高,为10905 kg/hm2;N,P,K肥在青稞上的增产效果大小为 N>P>K;施N( N2 P2 K2)量138 kg/hm2处理下,N肥利用率最高为39.06%;施P(N2P2K2)量137.7 kg/hm2处理下,P肥利用率最高为15.13%;施K(N2P2K1)量37.5 kg/hm2处理下,K肥利用率最高为56.19%。 N2P3K2处理下水分利用率明显提高,达到了18.19 kg/(hm2· mm)。滴灌条件下合适的N,P,K配比,可提高青稞对水分和肥料的利用效率。
為探索榦旱區青稞水肥高效利用的新途徑,在青海省海西州利用滴灌技術,採用“3414”肥料設計,進行瞭不同施肥處理對青稞產量、水分利用率和肥料利用率的試驗研究。結果錶明:N2 P3 K2處理下,穗粒數、單株籽粒重和韆粒重顯著提高;在N2 P3 K2處理下青稞產量達到最高,為10905 kg/hm2;N,P,K肥在青稞上的增產效果大小為 N>P>K;施N( N2 P2 K2)量138 kg/hm2處理下,N肥利用率最高為39.06%;施P(N2P2K2)量137.7 kg/hm2處理下,P肥利用率最高為15.13%;施K(N2P2K1)量37.5 kg/hm2處理下,K肥利用率最高為56.19%。 N2P3K2處理下水分利用率明顯提高,達到瞭18.19 kg/(hm2· mm)。滴灌條件下閤適的N,P,K配比,可提高青稞對水分和肥料的利用效率。
위탐색간한구청과수비고효이용적신도경,재청해성해서주이용적관기술,채용“3414”비료설계,진행료불동시비처리대청과산량、수분이용솔화비료이용솔적시험연구。결과표명:N2 P3 K2처리하,수립수、단주자립중화천립중현저제고;재N2 P3 K2처리하청과산량체도최고,위10905 kg/hm2;N,P,K비재청과상적증산효과대소위 N>P>K;시N( N2 P2 K2)량138 kg/hm2처리하,N비이용솔최고위39.06%;시P(N2P2K2)량137.7 kg/hm2처리하,P비이용솔최고위15.13%;시K(N2P2K1)량37.5 kg/hm2처리하,K비이용솔최고위56.19%。 N2P3K2처리하수분이용솔명현제고,체도료18.19 kg/(hm2· mm)。적관조건하합괄적N,P,K배비,가제고청과대수분화비료적이용효솔。
To explore a new way of high water and fertilizer use efficiency in arid area , a field exper-iment was conducted to investigate the effect of different fertilizer treatments on highland barley yield, water use efficiency and fertilizer use efficiency under drip -irrigation in Haixi Prefecture, Qinghai .The results show that grain number per spike , grain weight per plant and 1 000 -grain weight increases significantly under N 2P3K2 treatment.The yield is 10 905 kg/hm2 reached highest level under N2P3K2 treatment.The effects of nitrogen, phosphorus and potassium is in order of N >P>K.The highest nitrogen use efficiency is 39.06% when N application is 138 kg/hm2 (N2P2K2).The highest phosphate use efficiency is 15.13% when P application is 137.7 kg/hm2 (N2P2K2) and the highest potash use efficiency is 56.19% when K application is 37.5 kg/hm2 (N2P2K1).Water use efficiency obviously improved under N 2P3K2 treatment, reached to 18.19 kg/( hm2· mm) .It provides a theoretical basis for high water -fertilizer use efficiency in the area of highland barley .