摘要
本文通过田间试验并运用方差分析的方法,对施用化肥提高松嫩草场的生产力和经济效益进行了研究。研究结果表明,在松嫩平原地区,草场的施肥时期最好在6月份,即雨季前期;硝酸铵和磷酸二铵配合施用的增产效果和经济效益都显著地高于单施硝酸铵或磷酸二铵,因此应避免单施氮肥或磷肥;硝酸铵和磷酸二铵配合施用时,N∶P_2O_5的最佳比例为1∶1,施肥量以施N和P_2O_5每公顷各100kg为宜,此时草场每公顷可增产干草5644kg,纯收入达到512.53元,其增产效果和经济效益都非常显著。
After field test on Songnen Pasture, it was studied by varance method to improve pasture productivity and increase economic profit using chemical fertilizer. The study result showed that: on this pasture the best time for fertilizing is June——early raining season, the ecnomic profit is significantly higher by combining application of NH_4NO_3 and (NH_4) HPO_4 than application of NH_4NO_3 or (NH_4) HPO_4 only, so only application of N or P fertilizers should be avoided. When NH_4NO_3 and (NH_4) HPO_4 are applied together, the best ratio of N and P_2O_5 is 1:1, and 100kg for N and P_2O_5 per hectare is better. In this way, hay yield will be increased by 5644kg per hectare, and 512.53 Yuan net income will be obtained. Both the increased hay yield and economic profit are very significant.
出处
《草业科学》
CAS
CSCD
北大核心
1991年第4期23-26,共4页
Pratacultural Science
