黑龙江八一农垦大学学报
黑龍江八一農墾大學學報
흑룡강팔일농은대학학보
JOURNAL OF HEILONGJIANG AUGUST FIRST LAND RECLAMATION UNIVERSITY
2011年
4期
15-19
,共5页
刘海涛%童良军%赵立琴%王玉良
劉海濤%童良軍%趙立琴%王玉良
류해도%동량군%조립금%왕옥량
水稻%磷肥%施用量%经济效益
水稻%燐肥%施用量%經濟效益
수도%린비%시용량%경제효익
paddy%phosphate%the dosage%economic benefits
采用小区对比方法,随机区组设计,以空育131为试验材料研究寒地水稻磷肥施用效果及适宜的施用量。结果表明:试验区速效磷含量为22~26 mg.kg-1,土壤供磷量为58.7 kg.hm-2,可以满足水稻常规生产的需要,磷肥利用率较低,经济效益不显著,产投比低;两年最佳产量需P2O5量分别为19.4和26.4 kg.hm-2,仅相当于目前农业生产上磷肥用量的35%左右。而目前农业生产上,与试验地肥力相当或更高土壤大约占90%以上,因此,应降低磷肥用量,磷肥节约空间巨大。
採用小區對比方法,隨機區組設計,以空育131為試驗材料研究寒地水稻燐肥施用效果及適宜的施用量。結果錶明:試驗區速效燐含量為22~26 mg.kg-1,土壤供燐量為58.7 kg.hm-2,可以滿足水稻常規生產的需要,燐肥利用率較低,經濟效益不顯著,產投比低;兩年最佳產量需P2O5量分彆為19.4和26.4 kg.hm-2,僅相噹于目前農業生產上燐肥用量的35%左右。而目前農業生產上,與試驗地肥力相噹或更高土壤大約佔90%以上,因此,應降低燐肥用量,燐肥節約空間巨大。
채용소구대비방법,수궤구조설계,이공육131위시험재료연구한지수도린비시용효과급괄의적시용량。결과표명:시험구속효린함량위22~26 mg.kg-1,토양공린량위58.7 kg.hm-2,가이만족수도상규생산적수요,린비이용솔교저,경제효익불현저,산투비저;량년최가산량수P2O5량분별위19.4화26.4 kg.hm-2,부상당우목전농업생산상린비용량적35%좌우。이목전농업생산상,여시험지비력상당혹경고토양대약점90%이상,인차,응강저린비용량,린비절약공간거대。
The reasonable dosage of P2O5 in Paddy in Cold Areas is studied by the comparative method and random block design,The cultivar used was kongyu 131,which was transplanted at 30×13.3 cm spacing in plots of 3×10 m.The results showed that the amount of P2O5 provided by the soil was 58.7 kg·hm-2 when available phosphorus of tested soil was 22~26 mg·kg-1,which can meet the rice conventional production with lower utilization rate of phosphorus fertilizer,poorer economic returns,lower output investment ratio.The amount of P2O5 on the best production were 19.4 and 26.4 kg·hm-2 respectively in two years,which was only about 35% of agricultural production in the present.For production,fertility equal or higher soil accounts for about 90%,thus,phosphorus dosage must be reduced to make huge saving space of phosphate.