本文選題：全膜雙壟溝 + 種植模式　； 參考：《中國土壤與肥料》2017年03期

【摘要】：為探索不同種植模式對(duì)晉北鹽堿土水鹽動(dòng)態(tài)特征的影響,采用大田試驗(yàn),以裸地為對(duì)照(CK),研究平作不覆膜(F)、平作覆膜(P)、起壟覆膜(P_r)和全膜雙壟溝(P_t)4種模式下對(duì)晉北蘇打型鹽堿土飼草玉米田的水鹽縱向動(dòng)態(tài)分布。全膜雙壟溝模式保水保墑,其中以0~40 cm土層效果最為明顯,土壤含水率較CK、F、P、P_r分別提高30.73%、27.63%、29.05%和19.96%;玉米生育期內(nèi)全膜雙壟溝模式持續(xù)抑制根區(qū)土壤鹽分上移,0~40 cm土層土壤電導(dǎo)率較CK、F、P和P_r分別降低31.30%、31.77%、24.42%和10.47%;40~100 cm土層比CK、F、P和P_r分別降低20.95%、11.61%、7.61%和5.60%;全膜雙壟溝模式有效降低0~20 cm表層土壤pH值,但對(duì)20~100 cm土壤pH值影響較小;全膜雙壟溝模式可有效改善土壤生態(tài)環(huán)境,促進(jìn)玉米植株生長發(fā)育,其產(chǎn)量比處理F、P和P_r分別提高36.62%、24.56%和10.98%。全膜雙壟溝模式可調(diào)控根區(qū)水鹽分布,改善土壤生態(tài)環(huán)境,促進(jìn)玉米生長發(fā)育,提高作物產(chǎn)量,可作為晉北鹽堿地土壤的有效改良措施之一。
[Abstract]:In order to explore the effects of different planting patterns on the dynamic characteristics of water and salt in saline and alkali soils in North Shanxi, field experiments were carried out. The vertical distribution of water and salt in the forage maize field of soda type saline and alkali soil in North Shanxi was studied under the four models of non-mulching film mulching, plastic film mulching, ridging and film mulching, and full film double ridging furrow and total film furrow respectively, using CK and CK as the control, and the results were as follows: (1) the vertical distribution of water and salt in the field of brackish corn was studied in this paper. The effect of water conservation and soil moisture conservation was most obvious in the 0 ~ 40 cm soil layer. Soil moisture content was increased by 30.737.63and 29.05% and 19.96.The soil electrical conductivity was decreased 31.3031.7724.42% and 10.4740cm-100 cm than CK FN P and 10.4740m / 100 cm soil layer, respectively, compared with CK FN P and pr, respectively, and the soil conductivity was decreased by 31.3031.7724.42% and 10.4740m / 100 cm, respectively, while the soil electrical conductivity of the soil layer at 40cm was decreased by the model of full-film double-ridge furrow during maize growth period, and the soil electrical conductivity was decreased by 31.3031.7724.42%, respectively. 20.95% 11.61% and 5.60% respectively. The soil pH value of 0 ~ 20 cm surface soil was decreased effectively by the model of full film double ridge. But it had little effect on the pH value of 20 ~ 100cm soil, and the full film double-ridge model could effectively improve the soil ecological environment and promote the growth and development of maize plants, the yield of which was increased by 36.62and 24.56% and 10.98%, respectively, compared with the treatment of FNP and pr, respectively. The full film double ridge pattern can regulate the distribution of water and salt in the root area, improve the soil ecological environment, promote the growth and development of maize, and increase crop yield. It can be used as one of the effective improvement measures for the soil in the north of Shanxi Province.
【作者單位】： 山西省農(nóng)業(yè)科學(xué)院農(nóng)業(yè)資源與經(jīng)濟(jì)研究所;土壤環(huán)境與養(yǎng)分資源山西省重點(diǎn)實(shí)驗(yàn)室山西省農(nóng)業(yè)科學(xué)院農(nóng)業(yè)環(huán)境與資源研究所;
【基金】：山西省土壤環(huán)境與養(yǎng)分資源重點(diǎn)實(shí)驗(yàn)室開放基金課題(2014002) 國家國際科技合作專項(xiàng)項(xiàng)目(2015DFA90990)
【分類號(hào)】：S156.4
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本文編號(hào)：1915687