本文選題：養(yǎng)分吸收 + 養(yǎng)分平衡�。� 參考：《土壤學(xué)報》2016年02期

【摘要】：農(nóng)田生態(tài)系統(tǒng)養(yǎng)分吸收與養(yǎng)分平衡是影響系統(tǒng)生產(chǎn)力和環(huán)境質(zhì)量的關(guān)鍵因素之一。本研究通過分析玉米田養(yǎng)鵝和常規(guī)玉米種植生產(chǎn)方式下玉米植株與籽粒的養(yǎng)分分配狀況,以及系統(tǒng)中養(yǎng)分的輸入和輸出狀況,對比評價各處理下養(yǎng)分的吸收和利用效率以及養(yǎng)分盈余和虧缺狀態(tài)。結(jié)果表明,玉米田養(yǎng)鵝處理下玉米籽粒和秸稈的氮(N)、磷(P)和鉀(K)含量與對照相比無顯著差異;玉米田養(yǎng)鵝處理各養(yǎng)分的吸收量與產(chǎn)量的相關(guān)性大小依次為PKN,其中P和K養(yǎng)分與產(chǎn)量的相關(guān)性顯著(p0.05);對照為PNK,其中P和N養(yǎng)分與產(chǎn)量的相關(guān)性顯著(p0.05);玉米田養(yǎng)鵝處理和對照的N、P2O5和K2O養(yǎng)分收獲指數(shù)、吸收效率和利用效率之間均無明顯差異;不同處理均存在較低的養(yǎng)分投入和較高的養(yǎng)分產(chǎn)出的情況,系統(tǒng)養(yǎng)分失衡,尤其是N和K元素在產(chǎn)出后嚴(yán)重虧缺,與玉米田養(yǎng)鵝處理相比,對照的N和K養(yǎng)分虧缺量分別高出39.0%和34.90%,處理間差異顯著(p0.05),對照P素的虧缺較小,但玉米田養(yǎng)鵝處理P素出現(xiàn)少量盈余,處理間差異極顯著(p0.01);從經(jīng)濟效益來看,玉米田養(yǎng)鵝處理雖存在玉米減產(chǎn)的問題,但其經(jīng)濟產(chǎn)量損失的部分可由肉鵝的經(jīng)濟產(chǎn)出得以補償并獲得了更高的經(jīng)濟效益�？傮w而言,玉米田養(yǎng)鵝處理對養(yǎng)分吸收和利用無明顯影響,養(yǎng)分平衡狀況較好,經(jīng)濟效益較高。
[Abstract]:Nutrient uptake and nutrient balance in farmland ecosystem is one of the key factors affecting system productivity and environmental quality. In this study, the nutrient distribution of maize plants and kernels, and the input and output of nutrients in the system were analyzed. The nutrient uptake and utilization efficiency, nutrient surplus and deficit state were evaluated. The results showed that there was no significant difference in N (N), P (P) and K (K) contents of corn grains and stalks between the two treatments. The correlation between nutrient uptake and yield in maize field was PKN, P and K nutrients were significantly correlated with yield (p0.05), PNK-P and N nutrients were significantly correlated with yield (p0.05), P and N nutrients were significantly correlated with yield (p0.05), P and K nutrients were significantly correlated with yield (p0.05), and P and N nutrients were significantly correlated with yield (p0.05). The nutrient harvest index of N, P _ 2O _ 5 and K _ 2O in treatment and control, There was no significant difference between absorption efficiency and utilization efficiency, there were lower nutrient input and higher nutrient output in different treatments, and the system nutrients were out of balance, especially N and K elements were seriously deficient after output. The nutrient deficit of N and K in the control was 39.0% and 34.90, respectively, compared with the control (p0.05). The P deficit of the control was smaller than that of the control, but there was a little surplus of P in the maize field. The difference between the treatments was very significant (p0.01), although there was a problem of reducing the yield of maize in the treatment of raising geese in maize field, the loss of economic yield could be compensated by the economic output of the meat geese and the higher economic benefits were obtained. In general, there was no obvious effect on nutrient absorption and utilization, nutrient balance was better and economic benefit was higher.
【作者單位】： 西藏大學(xué)農(nóng)牧學(xué)院;中國科學(xué)院青藏高原研究所;
【基金】：中國科學(xué)院科技服務(wù)網(wǎng)絡(luò)計劃項目(KFJ-EW-STS-073) 西藏科技廳項目和西藏野生特色生物資源開發(fā)平臺資助~~
【分類號】：S513;S835

【參考文獻】

相關(guān)期刊論文 前1條

1 胡昌浩,潘子龍;夏玉米同化產(chǎn)物積累與養(yǎng)分吸收分配規(guī)律的研究 Ⅱ.氮、磷、鉀的吸收、分配與轉(zhuǎn)移規(guī)律[J];中國農(nóng)業(yè)科學(xué);1982年02期

【共引文獻】

相關(guān)期刊論文 前10條

1 徐作s，

本文編號：2096990