In order to explore the method of returning corn stalk into field, the effects of returning corn stalk direcfly into soil and applying corn stalk-composted orgar^c fertilizer into soil on the physiochemical properties...In order to explore the method of returning corn stalk into field, the effects of returning corn stalk direcfly into soil and applying corn stalk-composted orgar^c fertilizer into soil on the physiochemical properties of tobacco-growing soil were studied. The results showed that returning corn stalk into soil could reduce soil bulk density and increase soil porosity, so as to improve the water and fertilizer retention capacity of tobacco-growing soil. At the same time, returning corn stalk into soil could also increase the organic matter, available phosphorus and available potassi- um contents in tobacco-growing soil. In the early field growth stage of tobacco, soil alkali-hydrolyzable nitrogen content decreased slightly; but in the middle and later field growth stage, the alkali-hydrolyzable nitrogen content in tobacco-growing soil increased. The treatment effect of corn stalk＋urea＋fermentation bacteria and corn stalk＋urea＋BM was better than that of the control （returning corn stalk directly into soil）, indicating that the corn stalk-composted organic fertilizer had certain popular- ization value.展开更多
The effect of cement on physiochemical properties of three types of soils i.e garden soil, agricultural soil and roadside soil was investigated. The ordinary Portland cement was used. The amount of cement added to soi...The effect of cement on physiochemical properties of three types of soils i.e garden soil, agricultural soil and roadside soil was investigated. The ordinary Portland cement was used. The amount of cement added to soil samples, as dry mass percentage was 20%. The results of analysis showed that the addition of cement is capable of bringing about changes in physiochemical properties of soil. The electrical conductivity and organic matter content in three soils get decreased by the addition of cement. While the pH, bulk density and water holding capacity of soils after the addition of cement gets increased. The soil found most suitable to be treated with cement was roadside soil. It was concluded that cement can be used to change the physiochemical properties of soil and this technique has great utility in improving the quality of problematic soils.展开更多
A study was conducted to evaluate the soil nutrient status of poplar plantation by Soil Nutrient Systematic Approach (SNSA) in Jianghan Plain, Hubei Province, China. Soil physiochemical properties were analyzed in lab...A study was conducted to evaluate the soil nutrient status of poplar plantation by Soil Nutrient Systematic Approach (SNSA) in Jianghan Plain, Hubei Province, China. Soil physiochemical properties were analyzed in laboratory through collection soil samples of study site. Ten treatments of application different fertilizers were designed such as CK, optimum treatment (N, P, K, Zn), N(P, K, Zn), P(N, K, Zn), K(N, P, Zn), +Mg(N, P, K, Zn, Mg), Zn (N,P,K), +2P(N, 2P, K, Zn), +2K(N, P, 2K, Zn), and 2N+2P+2K(2N, 2P, 2K, Zn) for field experiment to test the effect on tree height, diameter (DBH) growth, and dry weight of poplar. The results showed that there was no significant difference in tree heights between treatments with different fertilizers, diameter growth of poplar trees in treatments of lack of N and Zn was significantly slower than that of trees in optimum treatment, and dry weight of poplar dropped significantly for treatment of CK as well as treatments without application N and Zn. It is concluded that N and Zn were main limiting factor for poplar growth. Results from laboratory analysis and field experiment were uniform per-fectly, which proved that SNSA was reliable in evaluating soil nutrient status of poplar plantation.展开更多
谷子是我国北方重要的杂粮作物,研究表明施加生物炭显著提高谷子产量,但生物炭施用对谷子干物质积累转运及沙地土壤理化性质的影响缺乏详细研究。因此,为研究生物炭对谷子干物质积累转运及分配和土壤的影响,以“榆谷抗1”为试验材料,于2...谷子是我国北方重要的杂粮作物,研究表明施加生物炭显著提高谷子产量,但生物炭施用对谷子干物质积累转运及沙地土壤理化性质的影响缺乏详细研究。因此,为研究生物炭对谷子干物质积累转运及分配和土壤的影响,以“榆谷抗1”为试验材料,于2021—2022年在毛乌素新开垦沙地开展田间试验,共设置1个对照组(CK,生物炭添加量0.0 t hm^(-2))和3个试验组3.0 t hm^(-2)(C1)、4.5 t hm^(-2)(C2)和6.0 t hm^(-2)(C3)。结果表明,与CK相比,新开垦沙地施加生物炭可以显著提高谷子产量和总干物质量,增长幅度分别为12.22%~53.70%和9.62%~40.62%。与CK相比,施加生物炭处理显著提高了花后0(开花期)、7、14、21、28和45 d谷子倒一叶(旗叶)至倒十三叶的叶片干重。施加生物炭提高了开花期净光合速率,花后同化物积累量、花后同化物积累量对籽粒产量的贡献率以及收获期穗的干物质分配比例,但是后三者随生物炭施用量的增加呈现略微下降的趋势。收获期茎、叶总干物质分配比例随生物炭用量增加而降低,千粒重和收获指数随生物炭施用量的增加呈现先增加后减小的趋势。相关性分析显示,谷子产量与收获期茎重(R2=0.68)、收获期地上部总重(R2=0.71)和收获期全株总重(R2=0.70)呈显著正相关。施加生物炭能有效提高土壤过氧化氢酶、脲酶和蔗糖酶的活性,并且显著提高土壤有效氮和有效磷的含量,其中C2(4.5 t hm^(-2))处理改善效果较大。综上,施加生物炭改善土壤质量,提高开花期谷子净光合速率,增加花后营养器官光合产物的积累,提高穗部干物质分配比例,最终实现谷子增产。展开更多
文摘In order to explore the method of returning corn stalk into field, the effects of returning corn stalk direcfly into soil and applying corn stalk-composted orgar^c fertilizer into soil on the physiochemical properties of tobacco-growing soil were studied. The results showed that returning corn stalk into soil could reduce soil bulk density and increase soil porosity, so as to improve the water and fertilizer retention capacity of tobacco-growing soil. At the same time, returning corn stalk into soil could also increase the organic matter, available phosphorus and available potassi- um contents in tobacco-growing soil. In the early field growth stage of tobacco, soil alkali-hydrolyzable nitrogen content decreased slightly; but in the middle and later field growth stage, the alkali-hydrolyzable nitrogen content in tobacco-growing soil increased. The treatment effect of corn stalk＋urea＋fermentation bacteria and corn stalk＋urea＋BM was better than that of the control （returning corn stalk directly into soil）, indicating that the corn stalk-composted organic fertilizer had certain popular- ization value.
文摘The effect of cement on physiochemical properties of three types of soils i.e garden soil, agricultural soil and roadside soil was investigated. The ordinary Portland cement was used. The amount of cement added to soil samples, as dry mass percentage was 20%. The results of analysis showed that the addition of cement is capable of bringing about changes in physiochemical properties of soil. The electrical conductivity and organic matter content in three soils get decreased by the addition of cement. While the pH, bulk density and water holding capacity of soils after the addition of cement gets increased. The soil found most suitable to be treated with cement was roadside soil. It was concluded that cement can be used to change the physiochemical properties of soil and this technique has great utility in improving the quality of problematic soils.
基金The study was supported by PPI/PPIC China Program (No. HB-19) and Wetland Laboratory Opening Foundation of Hubei Province (No. HNKFJ20021301).
文摘A study was conducted to evaluate the soil nutrient status of poplar plantation by Soil Nutrient Systematic Approach (SNSA) in Jianghan Plain, Hubei Province, China. Soil physiochemical properties were analyzed in laboratory through collection soil samples of study site. Ten treatments of application different fertilizers were designed such as CK, optimum treatment (N, P, K, Zn), N(P, K, Zn), P(N, K, Zn), K(N, P, Zn), +Mg(N, P, K, Zn, Mg), Zn (N,P,K), +2P(N, 2P, K, Zn), +2K(N, P, 2K, Zn), and 2N+2P+2K(2N, 2P, 2K, Zn) for field experiment to test the effect on tree height, diameter (DBH) growth, and dry weight of poplar. The results showed that there was no significant difference in tree heights between treatments with different fertilizers, diameter growth of poplar trees in treatments of lack of N and Zn was significantly slower than that of trees in optimum treatment, and dry weight of poplar dropped significantly for treatment of CK as well as treatments without application N and Zn. It is concluded that N and Zn were main limiting factor for poplar growth. Results from laboratory analysis and field experiment were uniform per-fectly, which proved that SNSA was reliable in evaluating soil nutrient status of poplar plantation.
文摘谷子是我国北方重要的杂粮作物,研究表明施加生物炭显著提高谷子产量,但生物炭施用对谷子干物质积累转运及沙地土壤理化性质的影响缺乏详细研究。因此,为研究生物炭对谷子干物质积累转运及分配和土壤的影响,以“榆谷抗1”为试验材料,于2021—2022年在毛乌素新开垦沙地开展田间试验,共设置1个对照组(CK,生物炭添加量0.0 t hm^(-2))和3个试验组3.0 t hm^(-2)(C1)、4.5 t hm^(-2)(C2)和6.0 t hm^(-2)(C3)。结果表明,与CK相比,新开垦沙地施加生物炭可以显著提高谷子产量和总干物质量,增长幅度分别为12.22%~53.70%和9.62%~40.62%。与CK相比,施加生物炭处理显著提高了花后0(开花期)、7、14、21、28和45 d谷子倒一叶(旗叶)至倒十三叶的叶片干重。施加生物炭提高了开花期净光合速率,花后同化物积累量、花后同化物积累量对籽粒产量的贡献率以及收获期穗的干物质分配比例,但是后三者随生物炭施用量的增加呈现略微下降的趋势。收获期茎、叶总干物质分配比例随生物炭用量增加而降低,千粒重和收获指数随生物炭施用量的增加呈现先增加后减小的趋势。相关性分析显示,谷子产量与收获期茎重(R2=0.68)、收获期地上部总重(R2=0.71)和收获期全株总重(R2=0.70)呈显著正相关。施加生物炭能有效提高土壤过氧化氢酶、脲酶和蔗糖酶的活性,并且显著提高土壤有效氮和有效磷的含量,其中C2(4.5 t hm^(-2))处理改善效果较大。综上,施加生物炭改善土壤质量,提高开花期谷子净光合速率,增加花后营养器官光合产物的积累,提高穗部干物质分配比例,最终实现谷子增产。
