Abstract:

Foliage fertilizer Megafol, made by Valagro Company of Italy, is a plant growth promoter which is rich in organic nitrogen such as peptide, amino acid etc and microelement like chelating state iron, zinc, manganese and so on. To study the effects and the reasonable usage of foliage fertilizer Megafol in rice, the agronomic characters and yield components of rice in the late-mid period were compared and analyzed trough experiment in multipoint field in this study. Three treatments were designed as follows: 675 mL/hm2 Megafol were sprayed in Changmei Village Niujiang Town Feiji tong (NJ Megafol) and Zhongan village Juntang town Antong experimental area (JT Megafol); water of 675 mL/hm2 was used as control. Besides, the water of 675 mL/hm2 was sprayed to the area within 20 cm (the first line) to the ridge which called Korshinskii edge line (NJ Marginal) in Changmei Village Niujiang Town Feiji tong as the second control. Results showed that the application of foliar Megafol in rice break period could significantly improve the distribution of dry matter production to grain. In the agronomic characters, the plant height of rice in the test field of JT (Megafol)1 (109.76±7.51 cm) were extremely significant higher than that in JTCK3 (82.19±7.29 cm); the stem base diameter in JT(Megafol)3 (4.82±0.79 cm) were exceedingly significant different compared to JTCK3 (3.20±0.42 cm); the setting percentage in JT (Megafol)1 [(90.16±3.59)%] were also extremely significantly higher than that in NJCK3 [(69.24±16.79)%]; the thousand kernel weight (TKW) of JT (Megafol)3 [(23.05±1.56) g] were exceedingly significantly higher compared to JTCK1 (20.28±1.20 g). These results increase the grains per plant to improve the rice yield per unit area in the Megafol treated field, among which the theoretical yield of JT (Megafol)2 test field even reached as high as (6318.75±130.05) kg/hm2. Meanwhile, foliar fertilizer Megafol could enhance plant resistance and leaf area index in harvest time, for instance, the leaf area index in NJ (Megafol)3 test field (34.83±9.41) was much higher than NJCK3 test field (0.09±0.19). Thus, through spraying foliar fertilizer Megafol to rice in late-mid period, the agronomic characters and yield of rice in harvest dates was significantly different between treatment and control. In addition, the results did not show much difference on the effect between Megafol treatment and the control test field named NJ Marginal which had the edge line effect.