Abstract Only a small portion of soil phosphorus (P) is available to plants on a short-term basis, and therefore, P taken up by crops in one growing season is small compared to total P (Pt) content of the soil. A group of soil microorganisms capable of transforming insoluble P into soluble and plant accessible forms. The objective of this study was to evaluate the changes in soil P-pools and P uptake by wheat crops as influenced by inoculation with Bacillus thuringiensis in two soils (Andisol and Ultisol), the experiment was conducted in pots under greenhouse conditions using a completely randomized design. Wheat plants were inoculated and re-inoculated at 20 and 46 days after sowing, respectively, with B. thuringiensis; and, plant sampling were performed after 46, 66 and 87 and soil at 87 days based on the Zadoks growth scale, and the soil was submitted by Hedley’s P fractions. The inoculation with B. thuringiensis affected significantly some P organic P (Po) and inorganic P (Pi) fractions in both soils (Andisol and Ultisol), improved P uptake by wheat crop in (Ultisol) and decreased significantly in (Andisol). The positive effect was more consistent in Ultisol than in Andisol, this strain can be solubilized P fraction extracted with conc. HCl-Po and HCl 1 mol.

中文翻译：

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接种苏云金芽孢杆菌的 Andisol 和 Ultisol 中的磷含量和小麦对磷的吸收

摘要 土壤磷（P）在短期内只有一小部分可供植物利用，因此，作物在一个生长季吸收的磷与土壤总磷（Pt）含量相比较小。一组能够将不溶性磷转化为可溶性和植物可及形式的土壤微生物。本研究的目的是评估在两种土壤（Andisol 和 Ultisol）中接种苏云金芽孢杆菌对小麦作物土壤磷库和磷吸收的影响，该实验在温室条件下的盆栽中使用完全随机的方法进行。设计。小麦植株分别在播种后 20 天和 46 天接种和重新接种苏云金芽孢杆菌；并且，根据 Zadoks 生长规模，在 46、66 和 87 天后进行植物取样，并在 87 天后进行土壤取样，土壤由 Hedley 的 P 组分提交。接种苏云金芽孢杆菌显着影响了两种土壤（Andisol 和 Ultisol）中的一些有机磷（Po）和无机磷（Pi）组分，提高了（Ultisol）小麦作物对磷的吸收，并显着降低了（Andisol）。在 Ultisol 中的积极作用比在 Andisol 中更一致，该菌株可以用浓缩液提取溶解的 P 级分。HCl-Po 和 HCl 1 mol。