【摘要】：本文針對(duì)寧夏中部旱區(qū)氣候特點(diǎn)及硒砂瓜重茬種植導(dǎo)致老壓砂地生產(chǎn)力較低的問題,在寧夏中衛(wèi)市興仁鎮(zhèn)拓寨村引入抗旱經(jīng)濟(jì)作物歐李,采用對(duì)比試驗(yàn)和正交試驗(yàn),進(jìn)行了壓砂地歐李品種篩選試驗(yàn)和壓砂地水肥耦合對(duì)不同品種歐李在壓砂地的生長變化規(guī)律試驗(yàn)。主要研究成果如下:1.通過壓砂地歐李品種篩選對(duì)比試驗(yàn),得出不同灌水量對(duì)十個(gè)品種歐李株高、莖粗、產(chǎn)量、品質(zhì)的影響規(guī)律及歐李水分生產(chǎn)效率,并通過對(duì)比分析表明,農(nóng)大S-D歐李各種指標(biāo)優(yōu)于其他品種,適宜在當(dāng)?shù)赝茝V種植。2.采用三因素兩水平正交試驗(yàn),進(jìn)行了老壓砂地條件下歐李品種、灌水定額和施肥定額對(duì)歐李生長發(fā)育和產(chǎn)量的影響試驗(yàn)。經(jīng)極差分析和方差分析,三因素對(duì)歐李株高增長作用順序?yàn)?歐李品種施肥定額灌水定額,對(duì)歐李莖粗增長作用順序?yàn)?歐李品種灌水定額施肥定額,歐李株高、莖粗指標(biāo)的因素最優(yōu)水平組合為A2B2C1,即選種農(nóng)大5號(hào),灌水定額5 m3/667m2,施肥定額10 kg/667m2。三因素對(duì)土壤中各養(yǎng)分含量影響作用順序?yàn)?:歐李品種施肥定額灌水定額,最優(yōu)組合為A2B2C1,即選種農(nóng)大5號(hào),灌水定額為5m3/667m2,施肥定額為10kg/667m2。三因素增產(chǎn)作用大小依次為:歐李品種灌水定額施肥定額,最優(yōu)組合為A2B2C1,即選種農(nóng)大5號(hào),灌水定額為5m3/667m2,施肥定額為10kg/667m2。三因素對(duì)歐李品質(zhì)影響作用順序?yàn)?歐李品種灌水定額施肥定額,最優(yōu)組合為A2B2C1,即選種農(nóng)大5號(hào),灌水定額為5 m3/667m2,施肥定額為10 kg/667m2。三因素對(duì)歐李葉片凈光合速率影響作用順序?yàn)?灌水定額歐李品種施肥定額,最優(yōu)組合為A2B2C1,即選種農(nóng)大5號(hào),灌水定額為5 m3/667m2,施肥定額為10 kg/667m2。從高產(chǎn)、優(yōu)質(zhì)、節(jié)水等方面考慮,最優(yōu)組合為A2B2C1,與參考組合(處理4)一致,即選種農(nóng)大5號(hào),灌水定額5m3/667m2,施肥定額10kg/667m2為壓砂地歐李適宜的水肥組合。
[Abstract]:In order to solve the problem of low productivity of old sand pressing field caused by repeated planting of selenium sand melon in arid area of central Ningxia, the drought resistant cash crop ou Li was introduced into Tuozhai Village, Xingren Town, Zhongwei City, Ningxia, and comparative experiment and orthogonal experiment were used. The selection test of Euphorbia pulcherrima varieties in sand pressing field and the effect of water and fertilizer coupling on the growth and change of different varieties of Eupatorium adenophorum in sand pressing field were carried out. The main research results are as follows: 1. The effects of different irrigation amount on plant height, stem diameter, yield and quality of ten varieties and the water production efficiency of plum were obtained through the screening and comparative experiment of plum varieties in sand pressing field, and the results showed that the effect of different irrigation amount on plant height, stem diameter, yield and quality of ten varieties and the water production efficiency of Prunus mandshurica were obtained. All kinds of indexes of Nongda S / D plum are better than those of other varieties, and it is suitable for local promotion and planting. 2. The effects of irrigation quota and fertilizer quota on the growth and yield of Euphorbia pulcherrima under the condition of old sand pressing field were tested by orthogonal experiment with three factors and two levels. Through extreme difference analysis and variance analysis, the order of the effect of the three factors on the growth of plum plant height was as follows: the fertilizer quota irrigation quota of European plum varieties, and the order of effect on stem diameter growth of European plum varieties was: the irrigation quota fertilizer quota, the plant height of European plum varieties, The optimal level combination of stem diameter index was A2B2C1, that is, Nongda No. 5, irrigation quota 5m3 鈮，

本文編號(hào)：2478553