Song Ying, Guo Su-Juan, Zhang Li, Sun Hui-Jun, Xie Ming-Ming, Wu Yan-Qi, Wang Jing
Key Laboratory for Silviculture and Conservation, Ministry of Education, College of Forestry, Beijing Forestry University, Beijing 100083, China.
Huan Jing Ke Xue. 2017 Mar 8;38(3):1262-1271. doi: 10.13227/j.hjkx.201608088.
Characterization of the forms of phosphorus (P) in four organic composts including compost of hulls and leaves of , edible fungi residues, corn stalks and chicken manure (BYZ), compost of edible fungi residues and chicken manure(ZF), composts of hulls and leaves of , edible fungi residues and chicken manure (BZ1 and BZ2) in Chinese chestnut producing area was conducted by sequential P fractionation developed by Dou . Field trial was conducted to study the effects of compost application on leaf phosphorus content of . The results showed that total phosphorus content(TP) of organic composts ranked as follows:BZ1(10.61 g·kg) > ZF(9.03 g·kg) > BYZ(8.56 g·kg) > BZ2(7.68 g·kg), and the inorganic phosphorus(P) accounted for 62.88%-73.62% of the total phosphorus in the organic composts. The content and proportion of HCl-P in the total fractionated phosphorus(P) was the highest among P forms in ZF, while that of HO-P was the highest in BYZ, BZ1 and BZ2. The content of NaOH-P was very low in all the composts. Active HO-Por NaHCO-P had the highest inorganic phosphorus proportion(89.17%-96.00%) of all the P forms. The major Pforms in BZ2 were HO- and HCl-extractable P fractions, while HO-P, HCl-P and NaHCO-P were major P forms in BYZ, BZ1 and ZF. Residual-P was the predominant organic phosphorus form, and BZ2 showed the highest Residual-P proportion of the total fractionated phosphorus(P) among all the composts. Leaf phosphorus contents per unit area of by field trial on the added phosphorus-equivalent basis were expressed as:BZ2>BZ1>BYZ>ZF>CK. Increment of leaf phosphorus content per unit area in Julyand per month on average showed positive relationship with the content and proportion of HO-P in the total fractionated phosphorus of composts, which presumably played a key role in leaf phosphorus absorption of measured in the year of deep concentrated fertilization. The results suggested that composts of hulls and leaves of , edible fungi residues and chicken manure (BZ2) was a good choice in given area for aerobic composting raw material system in which organic wastes from Chinese chestnut industry accounted for 80% (hulls and leaves of and edible fungi residues accounted for 60% and 20% respectively), which had a high proportion of HO-P and organic Residual-P pool and led to the highest leaf phosphorus content of
采用Dou提出的连续磷分级法，对板栗产区的四种有机堆肥（包括栗壳和树叶堆肥、食用菌渣堆肥、玉米秸秆堆肥和鸡粪堆肥（BYZ）、食用菌渣和鸡粪堆肥（ZF）、栗壳和树叶堆肥、食用菌渣和鸡粪堆肥（BZ1和BZ2））中的磷形态进行了表征。通过田间试验研究了堆肥施用对板栗叶片磷含量的影响。结果表明，有机堆肥的总磷含量（TP）排序如下：BZ1（10.61 g·kg）> ZF（9.03 g·kg）> BYZ（8.56 g·kg）> BZ2（7.68 g·kg），且无机磷（P）占有机堆肥总磷的62.88%-73.62%。在ZF堆肥中，总分级磷（P）中HCl-P的含量和比例在磷形态中最高，而在BYZ、BZ1和BZ2中，HO-P的含量和比例最高。所有堆肥中NaOH-P的含量都很低。活性HO-P或NaHCO-P在所有磷形态中无机磷比例最高（89.17%-96.00%）。BZ2中的主要磷形态是HO-和HCl-可提取磷组分，而HO-P、HCl-P和NaHCO-P是BYZ、BZ1和ZF中的主要磷形态。残留磷是主要的有机磷形态，在所有堆肥中，BZ2的残留磷占总分级磷（P）的比例最高。在添加磷当量的基础上，田间试验测得的单位面积板栗叶片磷含量表示为：BZ2 > BZ1 > BYZ > ZF > CK。7月单位面积叶片磷含量的增加量以及每月平均增加量与堆肥总分级磷中HO-P的含量和比例呈正相关，这可能在深施基肥当年测得的板栗叶片磷吸收中起关键作用。结果表明，在给定区域，栗壳和树叶堆肥、食用菌渣和鸡粪堆肥（BZ2）是好氧堆肥原料系统的一个良好选择，该系统中板栗产业有机废弃物占80%（栗壳和树叶堆肥以及食用菌渣分别占60%和20%），其HO-P和有机残留磷库比例较高，导致叶片磷含量最高。
