[Root morphological changes in maize and soybean intercropping system under different phosphorus levels].

A pot experiment was conducted to investigate the changes of root morphology and its relationship with P uptake under different P levels (0, 50 and 100 mg PO·kg, represented by P, P and P, respectively). The results showed that intercropping significantly changed root morphological parameters of both maize and soybean, and increased the root:shoot ratio in soybean under different P levels. Intercropping significantly increased root length, root surface area, root volume, and root dry weight of maize and soybean by 25.

[Quantitative analysis of root morphology and phosphorus absorption in wheat and faba bean intercropping system.].

The intercropping of legume and cereal crops could affect crop roots growth. The relationship among intercropping, root morphology and phosphorus (P) acquisition under different P levels is still unclear. With field experiments and a rhizo-box experiment, we examined the changes of yield, biomass, P acquisition and root morphology of wheat and faba bean under different planting patterns (monocropped wheat, MW; monocropped faba bean, MF; and wheat and faba bean intercropping, W//F) and different P levels.

Simulation of crop growth curve and analysis of interspecific interaction in wheat and faba bean intercropping system.

Interspecific interactions are closely related to the intercropping yield advantage. Little attention was paid to the dynamic changes of interspecific interactions. In this study, the growth curves of wheat and faba bean under different planting patterns (wheat monocropped, faba bean monocropped, and wheat and faba bean intercropping) and phosphorus (P) fertilization levels [P, 0 kg PO·hm(the control); P, 45 kg PO·hm; P, 90 kg PO·hm, repetitively] were simulated by Logistic analysis in a two-year field experiment.

[Effects of N application on wheat powdery mildew occurrence, nitrogen accumulation and allocation in intercropping system].

The main objective of this field experiment was to study the effects of wheat and faba bean intercropping on occurrence of wheat powdery mildew, nitrogen content, accumulation and allocation of wheat plant at 4 nitrogen levels of N(0 kg·hm), N(112.5 kg·hm), N(225 kg·hm), N(337.5 kg·hm), and to explore the relationship between N content, accumulation, allocation and the occurrence of wheat powdery mildew.

[Effect of wheat and faba bean intercropping on root exudation of low molecular weight organic acids].

Pot experiment of wheat and faba bean intercropping was conducted and exudates from wheat and faba bean roots were collected at different growth stages. Low molecular weight organic acids (OA) in root exudates were examined by HPLC. The results showed that wheat and faba bean intercropping significantly increased the total amounts of OA exuded by roots.