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为了研究水分对“Ancho.st.lnis”辣椒生长和果实性状的影响,本试验设计了灌溉不足(DI)和部分根际土壤干旱(PRD)两种节水灌溉方案。正常的商品栽培灌溉方式为对照(CI);根系两边灌溉,但用水量为CI处理50%为DI;两边交替灌溉,用水量只有CI处理50%为PRD。结果表明,PRD、DI处理与CI比较,播种130d后,中午辣椒叶片的水势分别低0.15和0.30Mpa;鲜椒产量分别减产19%和34.7%;单株结果数减少20%以上;干椒产量各处理差异不明显。DI处理果实可溶性固形物含量比其他两种处理高21%以上,差异显著,果色较好。PRD和DI落果率较高,PRD处理对80%以上果实影响不大,但DI和PRD分别节水170和164L。在节水效益高于弥补鲜椒总产量损失的地区,这两种方法可作为辣椒栽培行之有效的灌溉方式。
In order to study the effect of water on the growth and fruit traits of ’Ancho.st.lnis’ pepper, we designed two water-saving irrigation schemes, namely, irrigation deficit (DI) and partial rhizosphere soil drought (PRD). The normal commercial cultivation irrigation method is the control (CI). The roots are irrigated on both sides, but the water consumption is 50% of the CI and 50% of the DI. The two sides are alternately irrigated and the water consumption is only 50% of the PR treated by CI. The results showed that compared with CI, PRD and DI treatments showed that the water potential of noon pepper was 0.15 and 0.30Mpa respectively after 130 days of seeding. The yield of fresh pepper decreased by 19% and 34.7% respectively. The number of single plants decreased by more than 20% The difference is not obvious. DI treatment of fruit soluble solids content higher than the other two treatments more than 21%, the difference was significant, fruit color is better. PRD and DI had higher drop-off rate, while PRD treatment had little effect on more than 80% of the fruit, but DI and PRD saved 170 and 164L, respectively. These two methods can be used as an effective irrigation method for pepper cultivation in areas where the water-saving benefit is higher than that of compensating for the total yield loss of fresh pepper.