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Chinese Agricultural Science Bulletin ›› 2019, Vol. 35 ›› Issue (28): 1-6.doi: 10.11924/j.issn.1000-6850.casb18050075

Special Issue: 水稻

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Medium and Microelements Fertilizer: Effects on Plant Type and Dry Matter Accumulation of Super Hybrid Indica Rice (Oryza sativa L.)

  

  • Received:2018-05-14 Revised:2019-09-04 Accepted:2018-07-24 Online:2019-10-14 Published:2019-10-14

Abstract: To explore the effects of medium and microelements fertilizer on plant type and dry matter accumulation of super hybrid Indica rice, the super rice variety ‘ Tianyou 3618 ’ was used as test material, field experiments were conducted in the early season and late season respectively in 2014. Four different medium and microelements fertilizer application treatments were set as CK (0 kg/hm 2 ), T1 (375 kg/hm 2 ), T2 (750 kg/hm 2 )and T3 (1125 kg/hm 2 ). The plant type (including the leaf length and width of the upper three leaves, the thickness and the opening angle of the flag leaf), the relative content of chlorophyll (SPAD value) of the first leaf from the top, and dry matter accumulation dynamics of populations were analyzed. The results showed that,the leaf length, leaf thickness and leaf width had an increasing trend with medium and microelements fertilizer treatment in the early season in 2014, indicating that medium and microelements fertilizer treatment affected leaf morphology. In addition, the relative content of chlorophyll showed an increasing trend, while the openingangle of the up three leaves showed a decreasing trend with medium and microelements fertilizer applications.Medium and microelements fertilizer also had a certain promotion function on dry matter accumulation. The reasons were that the plant type and dry matter accumulation of super hybrid rice were not only related with the type of fertilizer elements, but also related with the combined application of fertilizer elements, and the basic soil fertility and other factors. The results of this research indicated that the medium and microelements fertilizer with 375 kg/hm 2 treatment had positive effects on the plant type, and further increasing the dose of medium and microelements fertilizer had no significant effect on plant type and dry matter accumulation.

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